3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function isJson($string) { if(is_string($string)) { json_decode($string); return (json_last_error() == JSON_ERROR_NONE); } return false; } $a=['arraiii'=>['dentro'=>234]]; $b=json_encode($a); var_dump(isJson($a));
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/lKBn8 on line 15
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 '[' in /in/lKBn8 on line 15
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/lKBn8 on line 15
Process exited with code 255.