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run code in 300+ PHP versions simultaneously
<?php $int  = 2;     $bool = true;     $a= 1 + 'test'. ($int + $bool);     $b= 'test' . ($int + $bool) + 1;     var_dump($a, $b);
Output for 5.4.0 - 5.4.34
Parse error: syntax error, unexpected '$bool ' (T_VARIABLE) in /in/USIrH on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/USIrH on line 4
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/USIrH on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/USIrH on line 4
Process exited with code 255.
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214.05 ms | 1395 KiB | 124 Q