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run code in 300+ PHP versions simultaneously
<?php if (empty($mystring)) { echo 'empty'; } if ($mystring == null) { echo 'null; // and warning } if (!isset($mystring)) { 'not set'; }
Output for 5.4.0 - 5.4.29
Parse error: syntax error, unexpected 'not' (T_STRING), expecting ',' or ';' in /in/LU9XZ on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /in/LU9XZ on line 12
Process exited with code 255.
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