3v4l.org

run code in 300+ PHP versions simultaneously
<?php function outer_function() { var_dump(debug_backtrace()); } class ExampleObject { function __construct() { outer_function(); } } new ExampleObject();
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
array(2) { [0]=> array(4) { ["file"]=> string(9) "/in/I7ffr" ["line"]=> int(9) ["function"]=> string(14) "outer_function" ["args"]=> array(0) { } } [1]=> array(7) { ["file"]=> string(9) "/in/I7ffr" ["line"]=> int(13) ["function"]=> string(11) "__construct" ["class"]=> string(13) "ExampleObject" ["object"]=> object(ExampleObject)#1 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } }

preferences:
35.71 ms | 411 KiB | 5 Q