3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(json_encode("//\\\\", JSON_UNESCAPED_SLASHES));
based on 6P2hR
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(8) ""//\\\\""
Output for 5.3.0 - 5.3.29
Notice: Use of undefined constant JSON_UNESCAPED_SLASHES - assumed 'JSON_UNESCAPED_SLASHES' in /in/LO5D0 on line 2 Warning: json_encode() expects parameter 2 to be long, string given in /in/LO5D0 on line 2 NULL
Output for 5.2.0 - 5.2.17
Notice: Use of undefined constant JSON_UNESCAPED_SLASHES - assumed 'JSON_UNESCAPED_SLASHES' in /in/LO5D0 on line 2 Warning: json_encode() expects exactly 1 parameter, 2 given in /in/LO5D0 on line 2 NULL
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/LO5D0 on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/LO5D0 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/LO5D0 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/LO5D0 on line 2