3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = ''; for ($i=0; $i < 128; $i++) { $string .= chr($i); } $encoded = json_encode($string, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT); $decoded =json_decode($encoded, TRUE); var_dump($string === $decoded);
Output for 5.3.0 - 7.1.0
bool(true)
Output for 5.2.0 - 5.2.17
Notice: Use of undefined constant JSON_HEX_TAG - assumed 'JSON_HEX_TAG' in /in/pCtWM on line 6 Notice: Use of undefined constant JSON_HEX_APOS - assumed 'JSON_HEX_APOS' in /in/pCtWM on line 6 Notice: Use of undefined constant JSON_HEX_AMP - assumed 'JSON_HEX_AMP' in /in/pCtWM on line 6 Notice: Use of undefined constant JSON_HEX_QUOT - assumed 'JSON_HEX_QUOT' in /in/pCtWM on line 6 Warning: json_encode() expects exactly 1 parameter, 2 given in /in/pCtWM on line 6 bool(false)
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/pCtWM on line 6
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/pCtWM on line 6
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/pCtWM on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/pCtWM on line 6