3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private function x() { # retrieve caller name $calledby = debug_backtrace(); print_r($calledby); // does not work $caller = (strlen($calledby[1]['class'])) ? $calledby[1]['class'] : $calledby[0]['class']; // works and does does not segfault if (strlen($calledby[1]['class'])) $caller = $calledby[1]['class']; else $caller = $calledby[0]['class']; # arguments are required if (!func_num_args()) { return; } # fill variables with argument contents if exists $variables = (func_num_args() == 0) ? NULL : (is_array(func_get_arg(0)) ? func_get_arg(0) : NULL); } public function __construct() { $this->x(); } } new A();
Output for 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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 ( [0] => Array ( [file] => /in/VjYk1 [line] => 20 [function] => x [class] => A [object] => A Object ( ) [type] => -> [args] => Array ( ) ) [1] => Array ( [file] => /in/VjYk1 [line] => 24 [function] => __construct [class] => A [object] => A Object ( ) [type] => -> [args] => Array ( ) ) )
Output for 5.0.0 - 5.0.5, 5.1.0
Array ( [0] => Array ( [file] => /in/VjYk1 [line] => 20 [function] => x [class] => A [type] => -> [args] => Array ( ) ) [1] => Array ( [file] => /in/VjYk1 [line] => 24 [function] => __construct [class] => A [type] => -> [args] => Array ( ) ) )
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/VjYk1 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/VjYk1 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/VjYk1 on line 4
Process exited with code 255.
preferences:
289.38 ms | 401 KiB | 398 Q