3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myVariable1 = '2345'; $myVariable2 = 4433; $myVariable3 = 'test'; $myVariable4 = '1345.33'; function makeInteger($val){ return is_numeric($val) ? (int)$val : null; } for($i=1;$i<=4;$i++){ echo makeInteger(${"myVariable".$i}).PHP_EOL; }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.13
2345 4433 1345
preferences:
148.25 ms | 407 KiB | 5 Q