[Php72] Handle crash on hex backreference on PregReplaceEModifierRector

Author: samsonasik

rules-tests/Php55/Rector/FuncCall/PregReplaceEModifierRector/Fixture/call_function_variable_numeric.php.inc

@@ -0,0 +1,29 @@
+<?php
+
+namespace Rector\Tests\Php55\Rector\FuncCall\PregReplaceEModifierRector\Fixture;
+
+class CallFunctionVariableNumeric
+{
+    public function run()
+    {
+        $result = preg_replace('/%u([a-f0-9]{4,4})/ei', 'utf8_chr(0x$1)', $_REQUEST['content']);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\Php55\Rector\FuncCall\PregReplaceEModifierRector\Fixture;
+
+class CallFunctionVariableNumeric
+{
+    public function run()
+    {
+        $result = preg_replace_callback('/%u([a-f0-9]{4,4})/i', function ($matches) {
+            return utf8_chr(hexdec($matches[1]));
+        }, $_REQUEST['content']);
+    }
+}
+
+?>