3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array1 = array('A', 'B'); $array2 = array('1', '2', '3'); $num = count($array2); //The total number of possible combinations $total = pow(2, $num); $temp = array(); //Loop through each possible combination for ($i = 0; $i < $total; $i++) { //For each combination check if each bit is set for ($j = 0; $j < $num; $j++) { //Is bit $j set in $i? if (pow(2, $j) & $i) echo $array2[$j] . ' '; } echo '<br />'; } //print_r($temp);
based on TXce4
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<br />1 <br />2 <br />1 2 <br />3 <br />1 3 <br />2 3 <br />1 2 3 <br />
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/pUGdl on line 23
Process exited with code 255.