3v4l.org

run code in 300+ PHP versions simultaneously
<?php function asd1() { asd2(); } function asd2() { $trace = debug_backtrace(); print_r($trace); } asd1();
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => Array ( [file] => /in/Nu6dS [line] => 5 [function] => asd2 [args] => Array ( ) ) [1] => Array ( [file] => /in/Nu6dS [line] => 14 [function] => asd1 [args] => Array ( ) ) )
preferences:
252.27 ms | 406 KiB | 339 Q