3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start = 0; $end = 10; $comparator = '<'; $comparatorExpression = null; $i = $start; for ( ; ; ) { switch ($comparator) { case '<'; $comparatorExpression = "$i < $end"; break; } if (!$comparatorExpression) { break; } //if (eval("return {$comparatorExpression};")) { //break; //} $i++; if ($i > $end) { echo "fail\n"; break; } echo $i; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
12345678910fail
preferences:
253.2 ms | 406 KiB | 313 Q