Doc #63832 [Opn]: Doc don't fully cover constructor inheritance

Edit report at https://bugs.php.net/bug.php?id=63832&edit=1 ID: 63832 User updated by: jschoett at gmail dot com Reported by: jschoett at gmail dot com -Summary: Doc don't fully cover constr. inheritance +Summary: Doc don't fully cover constructor inheritance Status: Open Type: Documentation Problem Package: Documentation problem Operating System: Doc problem PHP Version: 5.4.10 Block user comment: N Private report: N New Comment: just title adapted. Previous Comments: ------------------------------------------------------------------------ [2012-12-21 21:03:37] jschoett at gmail dot com Description: ------------ --- From manual page: http://www.php.net/language.oop5.decon --- I can not find a definite statement on this: "The child class inherits the constructor of the base class, iff the child class does not explicitly define an own constructor." The documentation do not cover this with: "Note: Parent constructors are not called implicitly if the child class defines a constructor" In addition, since this is an significant difference to e.g. Java, it should be documented Test script: --------------- Snippet to validate this statement (I know you already know the result): <?php class A { private $x = null; function __construct($x) { $this->x = $x; } } class B extends A { } $b1 = new B(); // Warning: Missing argument 1 for A::__construct() $b2 = new B(1); var_dump($b1); // Notice: Undefined variable: x var_dump($b2); ?> Expected result: ---------------- Same as actual, but I wan't it to be documented :) Actual result: -------------- Warning: Missing argument 1 for A::__construct(), called in path\testoutput.php on line 28 and defined in path\testoutput.php on line 21 Notice: Undefined variable: x in path\testoutput.php on line 22 object(B)#1 (1) { ["x":"A":private]=> NULL } object(B)#2 (1) { ["x":"A":private]=> int(1) } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63832&edit=1