3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'abcdefghijklmnopqrstuvwxyz0123456789'; for ($x=0,$r=null;$x<8;$x++) { $r .= substr(0, strlen($a - 1)); } echo $r;
Output for 7.1.0
Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6 Warning: A non-numeric value encountered in /in/DfIPM on line 6
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14