3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Everything you enter here will be executed by our servers. Try it! function foo(){ bar(); } function bar() { foobar(); } function foobar() { foobared(); } function foobared() { if (PHP_VERSION >= '5.4') var_dump(debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2)); else var_dump(debug_backtrace()); } foo();
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 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(2) { [0]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(13) ["function"]=> string(8) "foobared" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(9) ["function"]=> string(6) "foobar" ["args"]=> array(0) { } } }
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
array(4) { [0]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(13) ["function"]=> string(8) "foobared" ["args"]=> array(0) { } } [1]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(9) ["function"]=> string(6) "foobar" ["args"]=> array(0) { } } [2]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(5) ["function"]=> string(3) "bar" ["args"]=> array(0) { } } [3]=> array(4) { ["file"]=> string(9) "/in/JPAQ6" ["line"]=> int(22) ["function"]=> string(3) "foo" ["args"]=> array(0) { } } }

preferences:
239.64 ms | 404 KiB | 313 Q