3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'foo'; $c1 = eval('return (3 == $x);'); $c2 = eval('return ((((3 == $x))));'); $x1 = $c1(); $x2 = $c2(); $y1 = (3 == $x); $y2 = (((3 == $x)));
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: Value of type bool is not callable in /in/JZChW:8 Stack trace: #0 {main} thrown in /in/JZChW on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Function name must be a string in /in/JZChW:8 Stack trace: #0 {main} thrown in /in/JZChW on line 8
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Function name must be a string in /in/JZChW on line 8
Process exited with code 255.

preferences:
324.49 ms | 402 KiB | 376 Q