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<?php class c { function m() { f(); } } function f() { var_dump(debug_backtrace()); } (new c)->m(); ?>
based on eOi7a
Output for 5.4.0 - 7.2.0
array(2) { [0]=> array(4) { ["file"]=> string(9) "/in/BBKEf" ["line"]=> int(5) ["function"]=> string(1) "f" ["args"]=> array(0) { } } [1]=> array(7) { ["file"]=> string(9) "/in/BBKEf" ["line"]=> int(13) ["function"]=> string(1) "m" ["class"]=> string(1) "c" ["object"]=> object(c)#1 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/BBKEf on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/BBKEf on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/BBKEf on line 13
Process exited with code 255.