3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A { public $b = 1; public function __toString() { return 'uh oh'; } } $a = new A; var_dump($a); var_dump(json_encode($a));
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
object(A)#1 (1) { ["b"]=> int(1) } string(7) "{"b":1}"
Output for 5.0.0 - 5.1.6
object(A)#1 (1) { ["b"]=> int(1) } Fatal error: Call to undefined function json_encode() in /in/JtIKN on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/JtIKN on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/JtIKN on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/JtIKN on line 3
Process exited with code 255.