From 77265698ba90c59f0170d617eb60f697208a5b31 Mon Sep 17 00:00:00 2001
From: kagg-design <info@kagg.eu>
Date: Tue, 7 Jan 2020 21:31:16 +0200
Subject: [PATCH] Fix for WordPress.

In WordPress core, on the very early stage, the file wp-includes/compat.php is loaded. It defines polyfills for some mb_ functions, including mb_strlen. After this, Symfony\Polyfill\Mbstring becomes useless in any plugin / theme. This causes fatal errors on mb_ function calls.
---
 bootstrap.php | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/bootstrap.php b/bootstrap.php
index 204a41b..c743796 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -11,7 +11,7 @@
 
 use Symfony\Polyfill\Mbstring as p;
 
-if (!function_exists('mb_strlen')) {
+if (!function_exists('mb_strpos')) {
     define('MB_CASE_UPPER', 0);
     define('MB_CASE_LOWER', 1);
     define('MB_CASE_TITLE', 2);
@@ -30,12 +30,16 @@ function mb_check_encoding($var = null, $encoding = null) { return p\Mbstring::m
     function mb_detect_encoding($str, $encodingList = null, $strict = false) { return p\Mbstring::mb_detect_encoding($str, $encodingList, $strict); }
     function mb_detect_order($encodingList = null) { return p\Mbstring::mb_detect_order($encodingList); }
     function mb_parse_str($s, &$result = array()) { parse_str($s, $result); }
-    function mb_strlen($s, $enc = null) { return p\Mbstring::mb_strlen($s, $enc); }
+    if (!function_exists('mb_strlen')) {
+        function mb_strlen($s, $enc = null) { return p\Mbstring::mb_strlen( $s, $enc ); }
+    }
     function mb_strpos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_strpos($s, $needle, $offset, $enc); }
     function mb_strtolower($s, $enc = null) { return p\Mbstring::mb_strtolower($s, $enc); }
     function mb_strtoupper($s, $enc = null) { return p\Mbstring::mb_strtoupper($s, $enc); }
     function mb_substitute_character($char = null) { return p\Mbstring::mb_substitute_character($char); }
-    function mb_substr($s, $start, $length = 2147483647, $enc = null) { return p\Mbstring::mb_substr($s, $start, $length, $enc); }
+    if (!function_exists('mb_substr')) {
+        function mb_substr($s, $start, $length = 2147483647, $enc = null) { return p\Mbstring::mb_substr( $s, $start, $length, $enc ); }
+    }
     function mb_stripos($s, $needle, $offset = 0, $enc = null) { return p\Mbstring::mb_stripos($s, $needle, $offset, $enc); }
     function mb_stristr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_stristr($s, $needle, $part, $enc); }
     function mb_strrchr($s, $needle, $part = false, $enc = null) { return p\Mbstring::mb_strrchr($s, $needle, $part, $enc); }
@@ -51,6 +55,7 @@ function mb_output_handler($contents, $status) { return p\Mbstring::mb_output_ha
     function mb_http_input($type = '') { return p\Mbstring::mb_http_input($type); }
     function mb_convert_variables($toEncoding, $fromEncoding, &$a = null, &$b = null, &$c = null, &$d = null, &$e = null, &$f = null) { return p\Mbstring::mb_convert_variables($toEncoding, $fromEncoding, $a, $b, $c, $d, $e, $f); }
 }
+
 if (!function_exists('mb_chr')) {
     function mb_ord($s, $enc = null) { return p\Mbstring::mb_ord($s, $enc); }
     function mb_chr($code, $enc = null) { return p\Mbstring::mb_chr($code, $enc); }