3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = true; echo $a, PHP_EOL; echo $a++, PHP_EOL; echo ++$a, PHP_EOL; $a = false; echo $a, PHP_EOL; echo $a++, PHP_EOL; echo ++$a, PHP_EOL; $a = true; echo $a, PHP_EOL; echo $a--, PHP_EOL; echo --$a, PHP_EOL; $a = false; echo $a, PHP_EOL; echo $a--, PHP_EOL; echo --$a, PHP_EOL;
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
1 Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 5 1 Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 6 1 Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 10 Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 11 1 Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 15 1 Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 16 1 Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 20 Warning: Decrement on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 21
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30
1 1 1 1 1 1
preferences:
73.87 ms | 1286 KiB | 4 Q