[Performance] Remove regex check on open tag spaced check on FileProc…

…essor (#5073)

* [Performance] Remove regex check on open tag spaced check on FileProcessor

* fixtures

* clean up

src/Application/FileProcessor.php

@@ -4,7 +4,6 @@
 
 namespace Rector\Core\Application;
 
-use Nette\Utils\Strings;
 use PHPStan\AnalysedCodeException;
 use Rector\Caching\Detector\ChangedFilesDetector;
 use Rector\ChangesReporting\ValueObjectFactory\ErrorFactory;
@@ -29,12 +28,6 @@
 
 final class FileProcessor
 {
-    /**
-     * @var string
-     * @see https://regex101.com/r/xP2MGa/1
-     */
-    private const OPEN_TAG_SPACED_REGEX = '#^(?<open_tag_spaced>[^\S\r\n]+\<\?php)#m';
-
     public function __construct(
         private readonly FormatPerservingPrinter $formatPerservingPrinter,
         private readonly RectorNodeTraverser $rectorNodeTraverser,
@@ -164,17 +157,6 @@ private function printFile(File $file, Configuration $configuration): void
             if ($ltrimOriginalFileContent === $newContent) {
                 return;
             }
-
-            $cleanOriginalContent = Strings::replace($ltrimOriginalFileContent, self::OPEN_TAG_SPACED_REGEX, '<?php');
-            $cleanNewContent = Strings::replace($newContent, self::OPEN_TAG_SPACED_REGEX, '<?php');
-
-            /**
-             * Handle space before <?php wiped on print format preserving
-             * On inside content level
-             */
-            if ($cleanOriginalContent === $cleanNewContent) {
-                return;
-            }
         }
 
         if (! $configuration->isDryRun()) {

tests/Issues/NoNamespaced/Fixture/open_tag_spaced.php.inc

@@ -0,0 +1,10 @@
+<?php
+function test_callback2() {
+  // var_dump($output);
+  ?>
+  <div class="wrap">
+    <img src="<?= escape('hi there'); ?>">
+  </div>
+  <?php
+            echo " <?php";
+}

tests/Issues/NoNamespaced/Fixture/space_before_open_tag.php.inc

@@ -0,0 +1,5 @@
+
+
+<?php
+
+echo 'no change, has space before open tag';