3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = range('A','Z'); for($i = 'A'; $i <= 'Z'; $i+=2){ echo "$i \n"; }
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
A Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /in/jQ8Ze:4 Stack trace: #0 {main} thrown in /in/jQ8Ze on line 4
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
A Warning: A non-numeric value encountered in /in/jQ8Ze on line 4
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
A

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188.89 ms | 402 KiB | 229 Q