3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a() { b(array(1, 7, 4)); } function b($b) { c(); } function c() { print_r(debug_backtrace()); } a();
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 - 5.2.17, 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [0] => Array ( [file] => /in/uD3IQ [line] => 3 [function] => c [args] => Array ( ) ) [1] => Array ( [file] => /in/uD3IQ [line] => 2 [function] => b [args] => Array ( [0] => Array ( [0] => 1 [1] => 7 [2] => 4 ) ) ) [2] => Array ( [file] => /in/uD3IQ [line] => 5 [function] => a [args] => Array ( ) ) )

preferences:
196.08 ms | 407 KiB | 336 Q