3v4l.org

run code in 300+ PHP versions simultaneously
<?php function setifexists(&$var, null) { if (!isset($var)) { $var = null; } } setifexists($nonsense, true); var_dump($nonsense); $me = false; setifexists($me, true); var_dump($me);
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected ')', expecting '&' or variable (T_VARIABLE) in /in/n6t6n on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected ')', expecting '&' or T_VARIABLE in /in/n6t6n on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ')', expecting '&' or T_VARIABLE in /in/n6t6n on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in /in/n6t6n 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 '&' or T_VARIABLE or T_CONST in /in/n6t6n on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in /in/n6t6n on line 3
Process exited with code 255.
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