3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { function bar() { $this =& 1; } } $f = new Foo(); $f->bar();
Output for 5.4.0 - 5.4.26
Parse error: syntax error, unexpected '1' (T_LNUMBER) in /in/fs0C4 on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_LNUMBER in /in/fs0C4 on line 5
Process exited with code 255.
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193.87 ms | 1395 KiB | 63 Q