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run code in 150+ php & hhvm versions
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<?php class Test { public function a() { $this->b(); } public function b() { $this->c(); } public function c() { $this->d(); } public function d() { $this->e(); } public function e() { var_dump(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2)); } } $test = new Test(); $test->a();
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(5) { ["file"]=> string(9) "/in/UQYXL" ["line"]=> int(22) ["function"]=> string(1) "e" ["class"]=> string(4) "Test" ["type"]=> string(2) "->" } [1]=> array(5) { ["file"]=> string(9) "/in/UQYXL" ["line"]=> int(17) ["function"]=> string(1) "d" ["class"]=> string(4) "Test" ["type"]=> string(2) "->" } }
Output for hhvm-3.13.2
array(2) { [0]=> array(5) { ["file"]=> string(9) "/in/UQYXL" ["line"]=> int(13) ["function"]=> string(1) "e" ["class"]=> string(4) "Test" ["type"]=> string(2) "->" } [1]=> array(5) { ["file"]=> string(9) "/in/UQYXL" ["line"]=> int(12) ["function"]=> string(1) "d" ["class"]=> string(4) "Test" ["type"]=> string(2) "->" } }
Output for 5.3.6 - 5.3.29
Warning: debug_backtrace() expects at most 1 parameter, 2 given in /in/UQYXL on line 27 NULL
Output for 5.2.5 - 5.3.5
Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in /in/UQYXL on line 27 Warning: debug_backtrace() expects at most 1 parameter, 2 given in /in/UQYXL on line 27 NULL
Output for 5.0.0 - 5.2.4
Notice: Use of undefined constant DEBUG_BACKTRACE_IGNORE_ARGS - assumed 'DEBUG_BACKTRACE_IGNORE_ARGS' in /in/UQYXL on line 27 Warning: Wrong parameter count for debug_backtrace() in /in/UQYXL on line 27 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/UQYXL on line 5
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/UQYXL on line 5
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/UQYXL on line 5
Process exited with code 255.