3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 'a'; $result = ''; for ($i = 0; $i < 5; $i++) { $a++; $result += $a; } echo $result;
Output for 7.1.0 - 7.3.0rc4
Warning: A non-numeric value encountered in /in/QgGq6 on line 6 Warning: A non-numeric value encountered in /in/QgGq6 on line 6 Warning: A non-numeric value encountered in /in/QgGq6 on line 6 Warning: A non-numeric value encountered in /in/QgGq6 on line 6 Warning: A non-numeric value encountered in /in/QgGq6 on line 6 Warning: A non-numeric value encountered in /in/QgGq6 on line 6 0
Output for 4.3.0 - 7.0.20
0