3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = array (1, 2, 3, 4); $v = 0; $b = count($i)-1; for ($v; $v<=$b; $v++) { echo $i[$v] $b; } ?>
Output for 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '$b' (T_VARIABLE), expecting ',' or ';' in /in/j547s on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_VARIABLE, expecting ',' or ';' in /in/j547s on line 6
Process exited with code 255.
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178.03 ms | 1395 KiB | 66 Q