3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $b = array(0 => 1, 1 => 0); $a[$b[0]] = array(); echo print_r($a);
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected ' ' (T_STRING) in /in/03tlD on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING in /in/03tlD on line 4
Process exited with code 255.
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208.25 ms | 1399 KiB | 53 Q