3v4l.org

run code in 300+ PHP versions simultaneously
<?php class PushAndPull { $queue=array(); function push($push) { array_push($this->$queue,$push); } function pull() { return array_shift($this->$queue); } } $obj = new PushAndPull(); $obj->push(1); $obj->echo $queue;?>
Output for 5.4.0 - 5.4.11
Parse error: syntax error, unexpected '$queue' (T_VARIABLE), expecting function (T_FUNCTION) in VBOLu on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.21
Parse error: syntax error, unexpected T_VARIABLE, expecting T_FUNCTION in VBOLu on line 5
Process exited with code 255.
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162.9 ms | 1395 KiB | 41 Q