3v4l.org

run code in 300+ PHP versions simultaneously
<?php header/("content-type: text/html;charset=utf-8"); $a = 5; $b = 6; $c = 7; $determinant = ($b * $b)- 4 * ($a * $c); if($determinant > 0) { $x1=(-$b + sqrt($determinant))/(2 * $a); $x2=(-$b - sqrt($determinant))/(2 * $a); echo $x1; echo $x2; } else if ($determinant==0){ $x1 = $x2 = (-$b / (2*$a)); } else{ echo "on ne calcule pas ça"; } ?>
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 "header" in /in/FLDiX:3 Stack trace: #0 {main} thrown in /in/FLDiX on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant header - assumed 'header' (this will throw an Error in a future version of PHP) in /in/FLDiX on line 3 Warning: A non-numeric value encountered in /in/FLDiX on line 3 Warning: A non-numeric value encountered in /in/FLDiX on line 3 Warning: Division by zero in /in/FLDiX on line 3 on ne calcule pas ça
Output for 7.1.0 - 7.1.20
Notice: Use of undefined constant header - assumed 'header' in /in/FLDiX on line 3 Warning: A non-numeric value encountered in /in/FLDiX on line 3 Warning: A non-numeric value encountered in /in/FLDiX on line 3 Warning: Division by zero in /in/FLDiX on line 3 on ne calcule pas ça
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Notice: Use of undefined constant header - assumed 'header' in /in/FLDiX on line 3 Warning: Division by zero in /in/FLDiX on line 3 on ne calcule pas ça
preferences:
148.04 ms | 402 KiB | 184 Q