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run code in 300+ PHP versions simultaneously
<?php function a($depth = 0) { //return last backtrace call. If backtrace bigger then 3, return third call. if($depth === 1000) { if(PHP_VERSION_ID >= 50400) { return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT & ~ DEBUG_BACKTRACE_IGNORE_ARGS, 3), 0, 3)), -1, 1); } else if(PHP_VERSION_ID >= 50306) { return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT), 0, 3)), -1, 1); } else return array_slice(array_filter(array_slice(debug_backtrace(~ DEBUG_BACKTRACE_PROVIDE_OBJECT), 0, 3)), -1, 1); } return a(++$depth, str_repeat("a", 1000)); } var_dump(a());
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 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(1) { [0]=> array(4) { ["file"]=> string(9) "/in/UlIlg" ["line"]=> int(19) ["function"]=> string(1) "a" ["args"]=> array(2) { [0]=> int(999) [1]=> string(1000) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" } } }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/UlIlg" ["line"]=> int(19) ["function"]=> string(1) "a" ["args"]=> array(2) { [0]=> int(998) [1]=> string(1000) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" } } }
Output for 5.3.6 - 5.3.29
array(1) { [0]=> array(3) { ["file"]=> string(9) "/in/UlIlg" ["line"]=> int(19) ["function"]=> string(1) "a" } }
Output for 5.2.7 - 5.2.17, 5.3.0 - 5.3.5
Notice: Use of undefined constant DEBUG_BACKTRACE_PROVIDE_OBJECT - assumed 'DEBUG_BACKTRACE_PROVIDE_OBJECT' in /in/UlIlg on line 16 array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/UlIlg" ["line"]=> int(19) ["function"]=> string(1) "a" ["args"]=> array(2) { [0]=> int(998) [1]=> string(1000) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" } } }
Output for 5.2.5 - 5.2.6
Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 8 Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 12 Notice: Use of undefined constant DEBUG_BACKTRACE_PROVIDE_OBJECT - assumed 'DEBUG_BACKTRACE_PROVIDE_OBJECT' in /in/UlIlg on line 16 array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/UlIlg" ["line"]=> int(19) ["function"]=> string(1) "a" ["args"]=> array(2) { [0]=> int(998) [1]=> string(1000) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" } } }
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 8 Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 12 Notice: Use of undefined constant DEBUG_BACKTRACE_PROVIDE_OBJECT - assumed 'DEBUG_BACKTRACE_PROVIDE_OBJECT' in /in/UlIlg on line 16 Warning: Wrong parameter count for debug_backtrace() in /in/UlIlg on line 16 Warning: array_slice(): The first argument should be an array in /in/UlIlg on line 16 Warning: array_filter(): The first argument should be an array in /in/UlIlg on line 16 Warning: array_slice(): The first argument should be an array in /in/UlIlg on line 16 NULL
Output for 4.3.0 - 4.3.1
Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 8 Notice: Use of undefined constant PHP_VERSION_ID - assumed 'PHP_VERSION_ID' in /in/UlIlg on line 12 Notice: Use of undefined constant DEBUG_BACKTRACE_PROVIDE_OBJECT - assumed 'DEBUG_BACKTRACE_PROVIDE_OBJECT' in /in/UlIlg on line 16 Warning: Wrong parameter count for debug_backtrace() in /in/UlIlg on line 16 Warning: array_slice() [http://www.php.net/function.array-slice]: The first argument should be an array in /in/UlIlg on line 16 Warning: array_filter() [http://www.php.net/function.array-filter]: The first argument should be an array in /in/UlIlg on line 16 Warning: array_slice() [http://www.php.net/function.array-slice]: The first argument should be an array in /in/UlIlg on line 16 NULL
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