3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(null $a = null) { var_dump($a); } foo(); foo(null);
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
NULL NULL
Output for 5.0.0 - 5.0.5
Fatal error: Argument 1 must not be null in /in/jMdfH on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/jMdfH on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/jMdfH on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/jMdfH on line 3
Process exited with code 255.
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222.45 ms | 1399 KiB | 162 Q