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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Header { public function __construct() { var_dump(debug_backtrace()); } } class Modules { public function __construct() { $this->header = new Header(); } } class Project { public $config = "config"; public function __construct() { $this->modules = new Modules(); } } $p = new Project();
Output for 5.1.1 - 5.6.21, hhvm-3.12.0, 7.0.0 - 7.1.0
array(3) { [0]=> array(7) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(15) ["function"]=> string(11) "__construct" ["class"]=> string(6) "Header" ["object"]=> object(Header)#3 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(7) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(25) ["function"]=> string(11) "__construct" ["class"]=> string(7) "Modules" ["object"]=> object(Modules)#2 (0) { } ["type"]=> string(2) "->" ["args"]=> array(0) { } } [2]=> array(7) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(29) ["function"]=> string(11) "__construct" ["class"]=> string(7) "Project" ["object"]=> object(Project)#1 (1) { ["config"]=> string(6) "config" } ["type"]=> string(2) "->" ["args"]=> array(0) { } } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.1.0
array(3) { [0]=> array(6) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(15) ["function"]=> string(11) "__construct" ["class"]=> string(6) "Header" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [1]=> array(6) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(25) ["function"]=> string(11) "__construct" ["class"]=> string(7) "Modules" ["type"]=> string(2) "->" ["args"]=> array(0) { } } [2]=> array(6) { ["file"]=> string(9) "/in/Klpc6" ["line"]=> int(29) ["function"]=> string(11) "__construct" ["class"]=> string(7) "Project" ["type"]=> string(2) "->" ["args"]=> array(0) { } } }
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/Klpc6 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/Klpc6 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/Klpc6 on line 5
Process exited with code 255.