3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '== Alphabets ==' . PHP_EOL; $s = 'W'; for ($n=0; $n<5; $n++) { echo ++$s + 1 . ' '; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
== Alphabets == Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /in/XkHVr:6 Stack trace: #0 {main} thrown in /in/XkHVr on line 6
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
== Alphabets == Warning: A non-numeric value encountered in /in/XkHVr on line 6 1 Warning: A non-numeric value encountered in /in/XkHVr on line 6 1 Warning: A non-numeric value encountered in /in/XkHVr on line 6 1 Warning: A non-numeric value encountered in /in/XkHVr on line 6 1 Warning: A non-numeric value encountered in /in/XkHVr on line 6 1
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
== Alphabets == 1 1 1 1 1

preferences:
235.33 ms | 402 KiB | 330 Q