3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class t { public $val; } $arr=array(); $a=new t(); $a->val=1; $arr[]=$a; $a=new t(); $a->val=2; $arr[]=$a; echo json_encode(arr);
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Notice: Use of undefined constant arr - assumed 'arr' in /in/XLdgh on line 14 "arr"
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/XLdgh on line 14
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/XLdgh 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/XLdgh 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/XLdgh on line 3
Process exited with code 255.