3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $User = array( 'Name' => "Hans-Peterµµ", 'Contacts' => array(1, 2, 3, 4, 5, 6, 7, 42), 'Active' => 1 ); foreach ($User as &$val) { $val = preg_replace_callback('/\\\\u([0-9a-f]{4})/i', function($matches) { return mb_convert_encoding(pack('H*', $matches[1]), 'UTF-8', 'UTF-16'); }, $val); } $JS = json_encode($User, JSON_UNESCAPED_UNICODE); $J = json_encode($User); echo $J."<br/>\r\n".$JS;
based on aAGig
Output for 5.4.0 - 7.1.0
{"Name":"Hans-Peter\u00b5\u00b5","Contacts":["1","2","3","4","5","6","7","42"],"Active":"1"}<br/> {"Name":"Hans-Peterµµ","Contacts":["1","2","3","4","5","6","7","42"],"Active":"1"}
Output for 5.3.0 - 5.3.29
Notice: Use of undefined constant JSON_UNESCAPED_UNICODE - assumed 'JSON_UNESCAPED_UNICODE' in /in/e5WTc on line 13 Warning: json_encode() expects parameter 2 to be long, string given in /in/e5WTc on line 13 {"Name":"Hans-Peter\u00b5\u00b5","Contacts":["1","2","3","4","5","6","7","42"],"Active":"1"}<br/>
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/e5WTc on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/e5WTc on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/e5WTc on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/e5WTc on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/e5WTc on line 7
Process exited with code 255.