diff --git a/README.md b/README.md
index 5782b1cc..51a941af 100644
--- a/README.md
+++ b/README.md
@@ -227,6 +227,32 @@ wp i18n make-mo <source> [<destination>]
 
 
 
+### wp i18n make-php
+
+Create PHP files from PO files.
+
+~~~
+wp i18n make-php <source> [<destination>]
+~~~
+
+**OPTIONS**
+
+	<source>
+		Path to an existing PO file or a directory containing multiple PO files.
+
+	[<destination>]
+		Path to the destination directory for the resulting PHP files. Defaults to the source directory.
+
+**EXAMPLES**
+
+    # Create PHP files for all PO files in the current directory.
+    $ wp i18n make-php .
+
+    # Create a PHP file from a single PO file in a specific directory.
+    $ wp i18n make-php example-plugin-de_DE.po languages
+
+
+
 ### wp i18n update-po
 
 Update PO files from a POT file.
diff --git a/composer.json b/composer.json
index 54d6b5c5..54bb1b2e 100644
--- a/composer.json
+++ b/composer.json
@@ -42,6 +42,7 @@
             "i18n make-pot",
             "i18n make-json",
             "i18n make-mo",
+            "i18n make-php",
             "i18n update-po"
         ]
     },
diff --git a/features/makejson.feature b/features/makejson.feature
index 0fde9cef..54e97fb4 100644
--- a/features/makejson.feature
+++ b/features/makejson.feature
@@ -7,7 +7,7 @@ Feature: Split PO files into JSON files.
     When I try `wp i18n make-json foo`
     Then STDERR should contain:
       """
-      Error: Source file or directory does not exist!
+      Error: Source file or directory does not exist.
       """
     And the return code should be 1
 
diff --git a/features/makemo.feature b/features/makemo.feature
index 782035be..5fbb7014 100644
--- a/features/makemo.feature
+++ b/features/makemo.feature
@@ -7,7 +7,7 @@ Feature: Generate MO files from PO files
     When I try `wp i18n make-mo foo`
     Then STDERR should contain:
       """
-      Error: Source file or directory does not exist!
+      Error: Source file or directory does not exist.
       """
     And the return code should be 1
   Scenario: Bail for destination being a file when source is a folder
@@ -18,7 +18,7 @@ Feature: Generate MO files from PO files
     When I try `wp i18n make-mo foo test.mo `
     Then STDERR should contain:
       """
-      Error: Destination file not supported when source is a directory!
+      Error: Destination file not supported when source is a directory.
       """
     And the return code should be 1
   Scenario: Uses source folder as destination by default
diff --git a/features/makephp.feature b/features/makephp.feature
new file mode 100644
index 00000000..0fab416e
--- /dev/null
+++ b/features/makephp.feature
@@ -0,0 +1,167 @@
+Feature: Generate PHP files from PO files
+
+  Background:
+    Given an empty directory
+
+  Scenario: Bail for invalid source directories
+    When I try `wp i18n make-php foo`
+    Then STDERR should contain:
+      """
+      Error: Source file or directory does not exist.
+      """
+    And the return code should be 1
+
+  Scenario: Uses source folder as destination by default
+    Given an empty foo-plugin directory
+    And a foo-plugin/foo-plugin-de_DE.po file:
+      """
+      # Copyright (C) 2018 Foo Plugin
+      # This file is distributed under the same license as the Foo Plugin package.
+      msgid ""
+      msgstr ""
+      "Project-Id-Version: Foo Plugin\n"
+      "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/foo-plugin\n"
+      "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+      "Language-Team: LANGUAGE <LL@li.org>\n"
+      "Language: de_DE\n"
+      "MIME-Version: 1.0\n"
+      "Content-Type: text/plain; charset=UTF-8\n"
+      "Content-Transfer-Encoding: 8bit\n"
+      "POT-Creation-Date: 2018-05-02T22:06:24+00:00\n"
+      "PO-Revision-Date: 2018-05-02T22:06:24+00:00\n"
+      "X-Domain: foo-plugin\n"
+      "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+      #: foo-plugin.js:15
+      msgid "Foo Plugin"
+      msgstr "Foo Plugin"
+      """
+
+    When I run `wp i18n make-php foo-plugin`
+    Then STDOUT should contain:
+      """
+      Success: Created 1 file.
+      """
+    And the return code should be 0
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should exist
+
+  Scenario: Allows setting custom destination directory
+    Given an empty foo-plugin directory
+    And a foo-plugin/foo-plugin-de_DE.po file:
+      """
+      # Copyright (C) 2018 Foo Plugin
+      # This file is distributed under the same license as the Foo Plugin package.
+      msgid ""
+      msgstr ""
+      "Project-Id-Version: Foo Plugin\n"
+      "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/foo-plugin\n"
+      "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+      "Language-Team: LANGUAGE <LL@li.org>\n"
+      "Language: de_DE\n"
+      "MIME-Version: 1.0\n"
+      "Content-Type: text/plain; charset=UTF-8\n"
+      "Content-Transfer-Encoding: 8bit\n"
+      "POT-Creation-Date: 2018-05-02T22:06:24+00:00\n"
+      "PO-Revision-Date: 2018-05-02T22:06:24+00:00\n"
+      "X-Domain: foo-plugin\n"
+      "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+      #: foo-plugin.js:15
+      msgid "Foo Plugin"
+      msgstr "Foo Plugin"
+      """
+
+    When I run `wp i18n make-php foo-plugin result`
+    Then STDOUT should contain:
+      """
+      Success: Created 1 file.
+      """
+    And the return code should be 0
+    And the result/foo-plugin-de_DE.l10n.php file should exist
+
+  Scenario: Does include headers
+    Given an empty foo-plugin directory
+    And a foo-plugin/foo-plugin-de_DE.po file:
+      """
+      # Copyright (C) 2018 Foo Plugin
+      # This file is distributed under the same license as the Foo Plugin package.
+      msgid ""
+      msgstr ""
+      "Project-Id-Version: Foo Plugin\n"
+      "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/foo-plugin\n"
+      "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+      "Language-Team: LANGUAGE <LL@li.org>\n"
+      "Language: de_DE\n"
+      "MIME-Version: 1.0\n"
+      "Content-Type: text/plain; charset=UTF-8\n"
+      "Content-Transfer-Encoding: 8bit\n"
+      "POT-Creation-Date: 2018-05-02T22:06:24+00:00\n"
+      "PO-Revision-Date: 2018-05-02T22:06:24+00:00\n"
+      "X-Domain: foo-plugin\n"
+      "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+      #: foo-plugin.js:15
+      msgid "Foo Plugin"
+      msgstr "Foo Plugin"
+      """
+
+    When I run `wp i18n make-php foo-plugin`
+    Then STDOUT should contain:
+      """
+      Success: Created 1 file.
+      """
+    And the return code should be 0
+    And STDERR should be empty
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      'language'=>'de_DE'
+      """
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      'domain'=>'foo-plugin'
+      """
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      'plural-forms'=>'nplurals=2; plural=(n != 1);'
+      """
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      'messages'=>[''=>['Foo Plugin'=>['Foo Plugin']]]
+      """
+
+  Scenario: Does include translations
+    Given an empty foo-plugin directory
+    And a foo-plugin/foo-plugin-de_DE.po file:
+      """
+      # Copyright (C) 2018 Foo Plugin
+      # This file is distributed under the same license as the Foo Plugin package.
+      msgid ""
+      msgstr ""
+      "Project-Id-Version: Foo Plugin\n"
+      "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/foo-plugin\n"
+      "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+      "Language-Team: LANGUAGE <LL@li.org>\n"
+      "Language: de_DE\n"
+      "MIME-Version: 1.0\n"
+      "Content-Type: text/plain; charset=UTF-8\n"
+      "Content-Transfer-Encoding: 8bit\n"
+      "POT-Creation-Date: 2018-05-02T22:06:24+00:00\n"
+      "PO-Revision-Date: 2018-05-02T22:06:24+00:00\n"
+      "X-Domain: foo-plugin\n"
+      "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+      #: foo-plugin.js:15
+      msgid "Foo Plugin"
+      msgstr "Bar Plugin"
+      """
+
+    When I run `wp i18n make-php foo-plugin`
+    Then STDOUT should contain:
+      """
+      Success: Created 1 file.
+      """
+    And the return code should be 0
+    And the foo-plugin/foo-plugin-de_DE.l10n.php file should contain:
+      """
+      'messages'=>[''=>['Foo Plugin'=>['Bar Plugin']]]
+      """
diff --git a/features/makepot.feature b/features/makepot.feature
index 59479d39..c918e625 100644
--- a/features/makepot.feature
+++ b/features/makepot.feature
@@ -7,7 +7,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot foo bar/baz.pot`
     Then STDERR should contain:
       """
-      Error: Not a valid source directory!
+      Error: Not a valid source directory.
       """
     And the return code should be 1
 
@@ -20,7 +20,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -35,7 +35,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -296,7 +296,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin/languages/foo-plugin.pot file should exist
@@ -328,7 +328,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin.pot file should exist
@@ -388,7 +388,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -595,7 +595,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -659,7 +659,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -681,7 +681,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/themes/foobar/languages/foobar.pot file should exist
@@ -722,7 +722,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -751,7 +751,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should not contain:
       """
@@ -780,7 +780,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should not contain:
       """
@@ -808,7 +808,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -832,7 +832,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -859,7 +859,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -887,7 +887,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -915,7 +915,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -942,7 +942,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should not contain:
       """
@@ -978,7 +978,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -1523,7 +1523,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -1594,7 +1594,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -1650,7 +1650,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -1703,7 +1703,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the wp-content/plugins/hello-world/languages/hello-world.pot file should exist
@@ -1821,7 +1821,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -1949,7 +1949,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -1983,7 +1983,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -2056,7 +2056,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -2146,7 +2146,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -2241,7 +2241,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin.pot file should contain:
       """
@@ -2281,7 +2281,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -2318,7 +2318,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -2352,7 +2352,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin.pot file should contain:
       """
@@ -2383,7 +2383,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin.pot file should contain:
       """
@@ -2418,7 +2418,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin.pot file should contain:
       """
@@ -2472,7 +2472,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin.pot file should contain:
@@ -2532,7 +2532,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin.pot file should contain:
@@ -2580,7 +2580,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -2611,7 +2611,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -2622,7 +2622,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -2650,7 +2650,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -2699,7 +2699,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
 
@@ -2763,7 +2763,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin.pot file should contain:
@@ -2854,7 +2854,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should be empty
     And the foo-plugin.pot file should contain:
@@ -2906,7 +2906,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot example-project result.pot --ignore-domain --debug`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And STDERR should contain:
       """
@@ -2967,7 +2967,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the result.pot file should contain:
       """
@@ -3024,7 +3024,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the result.pot file should contain:
       """
@@ -3047,7 +3047,7 @@ Feature: Generate a POT file of a WordPress project
     When I run `wp i18n make-pot example-project result.pot --ignore-domain --package-name="Acme 1.2.3"`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the result.pot file should contain:
       """
@@ -3070,7 +3070,7 @@ Feature: Generate a POT file of a WordPress project
     When I run `wp i18n make-pot example-project result.pot --ignore-domain --file-comment="Copyright (C) 2018 John Doe\nPowered by WP-CLI."`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the result.pot file should contain:
        """
@@ -3104,7 +3104,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the contents of the result.pot file should match /^msgid/
 
@@ -3157,7 +3157,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -3283,7 +3283,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -3348,7 +3348,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -3453,7 +3453,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -3538,7 +3538,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Plugin file detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-plugin/foo-plugin.pot file should exist
     And the foo-plugin/foo-plugin.pot file should contain:
@@ -3573,7 +3573,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot foo-theme --skip-theme-json`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-theme/foo-theme.pot file should exist
     But the foo-theme/foo-theme.pot file should not contain:
@@ -3614,7 +3614,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot foo-theme`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-theme/foo-theme.pot file should exist
     And the foo-theme/foo-theme.pot file should contain:
@@ -3671,7 +3671,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot foo-theme`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-theme/foo-theme.pot file should exist
     And the foo-theme/foo-theme.pot file should contain:
@@ -3720,7 +3720,7 @@ Feature: Generate a POT file of a WordPress project
     When I try `wp i18n make-pot foo-theme`
     Then STDOUT should be:
       """
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-theme/foo-theme.pot file should exist
     And the foo-theme/foo-theme.pot file should contain:
@@ -3762,7 +3762,7 @@ Feature: Generate a POT file of a WordPress project
     Then STDOUT should be:
       """
       Theme stylesheet detected.
-      Success: POT file successfully generated!
+      Success: POT file successfully generated.
       """
     And the foo-theme/foo-theme.pot file should exist
     And the foo-theme/foo-theme.pot file should contain:
diff --git a/features/updatepo.feature b/features/updatepo.feature
index 04895403..0e093e88 100644
--- a/features/updatepo.feature
+++ b/features/updatepo.feature
@@ -7,7 +7,7 @@ Feature: Update existing PO files from a POT file
     When I try `wp i18n update-po bar/baz.pot`
     Then STDERR should contain:
       """
-      Error: Source file does not exist!
+      Error: Source file does not exist.
       """
     And the return code should be 1
 
@@ -385,6 +385,6 @@ Feature: Update existing PO files from a POT file
     When I try `wp i18n update-po foo-plugin/foo-plugin.pot foo-plugin/test`
     Then STDERR should contain:
       """
-      Error: Destination file/folder does not exist!
+      Error: Destination file/folder does not exist.
       """
     And the return code should be 1
diff --git a/i18n-command.php b/i18n-command.php
index b461e702..7187c325 100644
--- a/i18n-command.php
+++ b/i18n-command.php
@@ -30,4 +30,6 @@
 
 WP_CLI::add_command( 'i18n make-mo', '\WP_CLI\I18n\MakeMoCommand' );
 
+WP_CLI::add_command( 'i18n make-php', '\WP_CLI\I18n\MakePhpCommand' );
+
 WP_CLI::add_command( 'i18n update-po', '\WP_CLI\I18n\UpdatePoCommand' );
diff --git a/src/MakeJsonCommand.php b/src/MakeJsonCommand.php
index 12ba2b41..f54673de 100644
--- a/src/MakeJsonCommand.php
+++ b/src/MakeJsonCommand.php
@@ -86,7 +86,7 @@ public function __invoke( $args, $assoc_args ) {
 		$source = realpath( $args[0] );
 
 		if ( ! $source || ( ! is_file( $source ) && ! is_dir( $source ) ) ) {
-			WP_CLI::error( 'Source file or directory does not exist!' );
+			WP_CLI::error( 'Source file or directory does not exist.' );
 		}
 
 		$destination = is_file( $source ) ? dirname( $source ) : $source;
@@ -100,12 +100,8 @@ public function __invoke( $args, $assoc_args ) {
 			WP_CLI::error( 'No valid keys found. No file was created.' );
 		}
 
-		// Two is_dir() checks in case of a race condition.
-		if ( ! is_dir( $destination )
-			&& ! mkdir( $destination, 0777, true )
-			&& ! is_dir( $destination )
-		) {
-			WP_CLI::error( 'Could not create destination directory!' );
+		if ( ! is_dir( $destination ) && ! mkdir( $destination, 0777, true ) ) {
+			WP_CLI::error( 'Could not create destination directory.' );
 		}
 
 		$result_count = 0;
diff --git a/src/MakeMoCommand.php b/src/MakeMoCommand.php
index b97bf3c7..a13eeabc 100644
--- a/src/MakeMoCommand.php
+++ b/src/MakeMoCommand.php
@@ -40,7 +40,7 @@ class MakeMoCommand extends WP_CLI_Command {
 	public function __invoke( $args, $assoc_args ) {
 		$source = realpath( $args[0] );
 		if ( ! $source || ( ! is_file( $source ) && ! is_dir( $source ) ) ) {
-			WP_CLI::error( 'Source file or directory does not exist!' );
+			WP_CLI::error( 'Source file or directory does not exist.' );
 		}
 
 		$destination      = is_file( $source ) ? dirname( $source ) : $source;
@@ -51,19 +51,15 @@ public function __invoke( $args, $assoc_args ) {
 			// Destination is a file, make sure source is also a file
 			if ( ! empty( $destination_pathinfo['filename'] ) && ! empty( $destination_pathinfo['extension'] ) ) {
 				if ( ! is_file( $source ) ) {
-					WP_CLI::error( 'Destination file not supported when source is a directory!' );
+					WP_CLI::error( 'Destination file not supported when source is a directory.' );
 				}
 				$destination      = $destination_pathinfo['dirname'];
 				$custom_file_name = $destination_pathinfo['filename'] . '.' . $destination_pathinfo['extension'];
 			}
 		}
 
-		// Two is_dir() checks in case of a race condition.
-		if ( ! is_dir( $destination )
-			&& ! mkdir( $destination, 0777, true )
-			&& ! is_dir( $destination )
-		) {
-			WP_CLI::error( 'Could not create destination directory!' );
+		if ( ! is_dir( $destination ) && ! mkdir( $destination, 0777, true ) ) {
+			WP_CLI::error( 'Could not create destination directory.' );
 		}
 
 		if ( is_file( $source ) ) {
diff --git a/src/MakePhpCommand.php b/src/MakePhpCommand.php
new file mode 100644
index 00000000..3c3b559c
--- /dev/null
+++ b/src/MakePhpCommand.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace WP_CLI\I18n;
+
+use DirectoryIterator;
+use Gettext\Translations;
+use IteratorIterator;
+use SplFileInfo;
+use WP_CLI;
+use WP_CLI\Utils;
+use WP_CLI_Command;
+
+class MakePhpCommand extends WP_CLI_Command {
+	/**
+	 * Create PHP files from PO files.
+	 *
+	 * ## OPTIONS
+	 *
+	 * <source>
+	 * : Path to an existing PO file or a directory containing multiple PO files.
+	 *
+	 * [<destination>]
+	 * : Path to the destination directory for the resulting PHP files. Defaults to the source directory.
+	 *
+	 * ## EXAMPLES
+	 *
+	 *     # Create PHP files for all PO files in the current directory.
+	 *     $ wp i18n make-php .
+	 *     Success: Created 3 files.
+	 *
+	 *     # Create a PHP file from a single PO file in a specific directory.
+	 *     $ wp i18n make-php example-plugin-de_DE.po languages
+	 *     Success: Created 1 file.
+	 *
+	 * @when before_wp_load
+	 *
+	 * @throws WP_CLI\ExitException
+	 */
+	public function __invoke( $args, $assoc_args ) {
+		$source = realpath( $args[0] );
+		if ( ! $source || ( ! is_file( $source ) && ! is_dir( $source ) ) ) {
+			WP_CLI::error( 'Source file or directory does not exist.' );
+		}
+
+		$destination = is_file( $source ) ? dirname( $source ) : $source;
+		if ( isset( $args[1] ) ) {
+			$destination = $args[1];
+		}
+
+		if ( ! is_dir( $destination ) && ! mkdir( $destination, 0777, true ) ) {
+			WP_CLI::error( 'Could not create destination directory.' );
+		}
+
+		if ( is_file( $source ) ) {
+			$files = [ new SplFileInfo( $source ) ];
+		} else {
+			$files = new IteratorIterator( new DirectoryIterator( $source ) );
+		}
+
+		$result_count = 0;
+		/** @var DirectoryIterator $file */
+		foreach ( $files as $file ) {
+			if ( 'po' !== $file->getExtension() ) {
+				continue;
+			}
+
+			if ( ! $file->isFile() || ! $file->isReadable() ) {
+				WP_CLI::warning( sprintf( 'Could not read file %s', $file->getFilename() ) );
+				continue;
+			}
+
+			$file_basename    = basename( $file->getFilename(), '.po' );
+			$destination_file = "{$destination}/{$file_basename}.l10n.php";
+
+			$translations = Translations::fromPoFile( $file->getPathname() );
+			if ( ! PhpArrayGenerator::toFile( $translations, $destination_file ) ) {
+				WP_CLI::warning( sprintf( 'Could not create file %s', $destination_file ) );
+				continue;
+			}
+
+			++$result_count;
+		}
+
+		WP_CLI::success( sprintf( 'Created %d %s.', $result_count, Utils\pluralize( 'file', $result_count ) ) );
+	}
+}
diff --git a/src/MakePotCommand.php b/src/MakePotCommand.php
index 14aea975..75dfd8ff 100644
--- a/src/MakePotCommand.php
+++ b/src/MakePotCommand.php
@@ -297,10 +297,10 @@ public function __invoke( $args, $assoc_args ) {
 		}
 
 		if ( ! PotGenerator::toFile( $translations, $this->destination ) ) {
-			WP_CLI::error( 'Could not generate a POT file!' );
+			WP_CLI::error( 'Could not generate a POT file.' );
 		}
 
-		WP_CLI::success( 'POT file successfully generated!' );
+		WP_CLI::success( 'POT file successfully generated.' );
 	}
 
 	/**
@@ -331,7 +331,7 @@ public function handle_arguments( $args, $assoc_args ) {
 		$ignore_domain = Utils\get_flag_value( $assoc_args, 'ignore-domain', false );
 
 		if ( ! $this->source || ! is_dir( $this->source ) ) {
-			WP_CLI::error( 'Not a valid source directory!' );
+			WP_CLI::error( 'Not a valid source directory.' );
 		}
 
 		$this->main_file_data = $this->get_main_file_data();
@@ -371,12 +371,8 @@ public function handle_arguments( $args, $assoc_args ) {
 
 		WP_CLI::debug( sprintf( 'Destination: %s', $this->destination ), 'make-pot' );
 
-		// Two is_dir() checks in case of a race condition.
-		if ( ! is_dir( dirname( $this->destination ) )
-			&& ! mkdir( dirname( $this->destination ), 0777, true )
-			&& ! is_dir( dirname( $this->destination ) )
-		) {
-			WP_CLI::error( 'Could not create destination directory!' );
+		if ( ! is_dir( dirname( $this->destination ) ) && ! mkdir( dirname( $this->destination ), 0777, true ) ) {
+			WP_CLI::error( 'Could not create destination directory.' );
 		}
 
 		if ( isset( $assoc_args['merge'] ) ) {
diff --git a/src/PhpArrayGenerator.php b/src/PhpArrayGenerator.php
new file mode 100644
index 00000000..28c1c575
--- /dev/null
+++ b/src/PhpArrayGenerator.php
@@ -0,0 +1,104 @@
+<?php
+
+namespace WP_CLI\I18n;
+
+use Gettext\Generators\PhpArray;
+use Gettext\Translations;
+
+/**
+ * PHP array file generator.
+ *
+ * Returns output in the form WordPress uses.
+ */
+class PhpArrayGenerator extends PhpArray {
+	public static $options = [
+		'includeHeaders' => false,
+	];
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public static function toString( Translations $translations, array $options = [] ) {
+		$array = static::generate( $translations, $options );
+
+		$language = $translations->getLanguage();
+		if ( null !== $language ) {
+			$array['language'] = $language;
+		}
+
+		$headers = [
+			'X-Generator' => 'x-generator',
+		];
+
+		foreach ( $translations->getHeaders() as $name => $value ) {
+			if ( isset( $headers[ $name ] ) ) {
+				$array[ $headers[ $name ] ] = $value;
+			}
+		}
+
+		return '<?php' . PHP_EOL . 'return ' . static::var_export( $array ) . ';';
+	}
+
+	/**
+	 * Determines if the given array is a list.
+	 *
+	 * An array is considered a list if its keys consist of consecutive numbers from 0 to count($array)-1.
+	 *
+	 * Polyfill for array_is_list() in PHP 8.1.
+	 *
+	 * @see https://github.com/symfony/polyfill-php81/tree/main
+	 *
+	 * @since 4.0.0
+	 *
+	 * @codeCoverageIgnore
+	 *
+	 * @param array<mixed> $arr The array being evaluated.
+	 * @return bool True if array is a list, false otherwise.
+	 */
+	private static function array_is_list( array $arr ) {
+		if ( function_exists( 'array_is_list' ) ) {
+			return array_is_list( $arr );
+		}
+
+		if ( ( array() === $arr ) || ( array_values( $arr ) === $arr ) ) {
+			return true;
+		}
+
+		$next_key = -1;
+
+		foreach ( $arr as $k => $v ) {
+			if ( ++$next_key !== $k ) {
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Outputs or returns a parsable string representation of a variable.
+	 *
+	 * Like {@see var_export()} but "minified", using short array syntax
+	 * and no newlines.
+	 *
+	 * @since 4.0.0
+	 *
+	 * @param mixed $value The variable you want to export.
+	 * @return string The variable representation.
+	 */
+	private static function var_export( $value ) {
+		if ( ! is_array( $value ) ) {
+			return var_export( $value, true );
+		}
+
+		$entries = array();
+
+		$is_list = self::array_is_list( $value );
+
+		foreach ( $value as $key => $val ) {
+			$entries[] = $is_list ? self::var_export( $val ) : var_export( $key, true ) . '=>' . self::var_export( $val );
+		}
+
+		return '[' . implode( ',', $entries ) . ']';
+	}
+}
diff --git a/src/UpdatePoCommand.php b/src/UpdatePoCommand.php
index 556236f5..e739e18a 100644
--- a/src/UpdatePoCommand.php
+++ b/src/UpdatePoCommand.php
@@ -34,7 +34,7 @@ class UpdatePoCommand extends WP_CLI_Command {
 	public function __invoke( $args, $assoc_args ) {
 		$source = realpath( $args[0] );
 		if ( ! $source || ! is_file( $source ) ) {
-			WP_CLI::error( 'Source file does not exist!' );
+			WP_CLI::error( 'Source file does not exist.' );
 		}
 
 		$destination = dirname( $source );
@@ -44,7 +44,7 @@ public function __invoke( $args, $assoc_args ) {
 		}
 
 		if ( ! file_exists( $destination ) ) {
-			WP_CLI::error( 'Destination file/folder does not exist!' );
+			WP_CLI::error( 'Destination file/folder does not exist.' );
 		}
 
 		if ( is_file( $destination ) ) {