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run code in 300+ PHP versions simultaneously
<?php class A { public function __construct() { var_dump(debug_backtrace(true, 1)); } } class B { public function __construct() { new A(); } } new B;
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, 7.3.16 - 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(1) { [0]=> array(7) { ["file"]=> string(9) "/in/gWWYd" ["line"]=> int(13) ["function"]=> string(11) "__construct" ["class"]=> string(1) "A" ["object"]=> object(A)#2 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } }
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.29
Warning: debug_backtrace() expects at most 1 parameter, 2 given in /in/gWWYd on line 6 NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Warning: Wrong parameter count for debug_backtrace() in /in/gWWYd on line 6 NULL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/gWWYd on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/gWWYd on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/gWWYd on line 4
Process exited with code 255.

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