3v4l.org

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<?php echo '== Alphabets ==' . PHP_EOL; $s = 'W'; for ($n=0; $n<6; $n++) { echo $s +=2 . PHP_EOL; }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
== Alphabets == Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/V1HEu:5 Stack trace: #0 {main} thrown in /in/V1HEu on line 5
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
== Alphabets == Warning: A non-numeric value encountered in /in/V1HEu on line 5 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 2 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 4 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 6 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 8 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 10 Notice: A non well formed numeric value encountered in /in/V1HEu on line 5 12
Output for 7.3.32 - 7.3.33
== Alphabets == Warning: A non-numeric value encountered in /in/V1HEu on line 5 24681012
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
== Alphabets == 24681012

preferences:
216.03 ms | 402 KiB | 331 Q