3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "ssssaaaaaaa"; $count = 0; for($i=0;$i<strlen($string)-1;$i++) { if($string[$i] == $string($i+1)) { $count++; } } echo $count;
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
Fatal error: Uncaught Error: Call to undefined function ssssaaaaaaa() in /in/99kl8:6 Stack trace: #0 {main} thrown in /in/99kl8 on line 6
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function ssssaaaaaaa() in /in/99kl8 on line 6
Process exited with code 255.
preferences:
195.54 ms | 402 KiB | 226 Q