3v4l.org

run code in 300+ 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 - 8.3.6
1 Warning: Increment on type bool has no effect, this will change in the next major version of PHP in /in/VRNBK on line 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 - 8.1.28, 8.2.0 - 8.2.18
1 1 1 1 1 1
preferences:
137.85 ms | 402 KiB | 121 Q