3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 4121.57;$b = 3998;$c = 123.57;$d = round( $a - $b - $c, 2);$e = round( $d, 2 );$f = e === 0; echo "\n";echo str_pad(print_r($d,TRUE),4,' ')." // NEGATIVE ZERO?"."\n";echo str_pad(print_r($e,TRUE),4,' ')." // Don't worry, it rounds to zero! -_-"."\n";var_dump($f);
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
Fatal error: Uncaught Error: Undefined constant "e" in /in/ZiBGg:1 Stack trace: #0 {main} thrown in /in/ZiBGg on line 1
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Use of undefined constant e - assumed 'e' (this will throw an Error in a future version of PHP) in /in/ZiBGg on line 1 -0 // NEGATIVE ZERO? -0 // Don't worry, it rounds to zero! -_- bool(false)
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Warning: Use of undefined constant e - assumed 'e' (this will throw an Error in a future version of PHP) in /in/ZiBGg on line 1 -0 // NEGATIVE ZERO? 0 // Don't worry, it rounds to zero! -_- bool(false)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.6, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant e - assumed 'e' in /in/ZiBGg on line 1 -0 // NEGATIVE ZERO? 0 // Don't worry, it rounds to zero! -_- bool(false)
Output for 5.2.7 - 5.2.17
Notice: Use of undefined constant e - assumed 'e' in /in/ZiBGg on line 1 -0 // NEGATIVE ZERO? -0 // Don't worry, it rounds to zero! -_- bool(false)
preferences:
185.42 ms | 401 KiB | 312 Q