3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo (1 ** '1') . "\n"; echo (2 ** '1.') . "\n"; echo (3 ** '+1.0') . "\n"; echo (4 ** '+1.0e') . "\n"; echo (5 ** '+1.0e0') . "\n"; echo (6 ** '+1.0e0 ') . "\n"; echo (7 ** '+1.0e0 x') . "\n";
Output for 8.1.28 - 8.1.33, 8.2.17 - 8.2.29, 8.3.4 - 8.3.25, 8.4.1 - 8.4.12
1 2 3 Warning: A non-numeric value encountered in /in/ECZjp on line 6 4 5 6 Warning: A non-numeric value encountered in /in/ECZjp on line 9 7

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57.57 ms | 406 KiB | 5 Q