3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $json = array( "Sample" => array( "context" => 'جمهوری اسلامی ایران', "test" => '\u1234', ) ); $encoded = json_encode($json); var_dump($encoded); $unescaped = preg_replace_callback('/(?<!\\)\\\u(\w{4})/', function ($matches) { return html_entity_decode('&#x' . $matches[1] . ';', ENT_COMPAT, 'UTF-8'); }, $encoded); var_dump($unescaped);
Output for 5.3.0 - 7.1.0
string(146) "{"Sample":{"context":"\u062c\u0645\u0647\u0648\u0631\u06cc \u0627\u0633\u0644\u0627\u0645\u06cc \u0627\u06cc\u0631\u0627\u0646","test":"\\u1234"}}" Warning: preg_replace_callback(): Compilation failed: missing ) at offset 16 in /in/ShYi0 on line 15 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/ShYi0 on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/ShYi0 on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ShYi0 on line 13
Process exited with code 255.