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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { function test() { var_dump(debug_print_backtrace(true)); } } class Bar { public function __construct() { $foo = new Foo(); $foo->test(); } } $bar = new Bar();
Output for 5.3.6 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
#0 Foo->test() called at [/in/FG9Z4:17] #1 Bar->__construct() called at [/in/FG9Z4:21] NULL
Output for 5.3.0 - 5.3.5
Warning: debug_print_backtrace() expects exactly 0 parameters, 1 given in /in/FG9Z4 on line 8 NULL
Output for 5.0.0 - 5.2.17
Warning: Wrong parameter count for debug_print_backtrace() in /in/FG9Z4 on line 8 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/FG9Z4 on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/FG9Z4 on line 14
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/FG9Z4 on line 14
Process exited with code 255.