Req #49542 [Com]: __callStatic() only invoked if instance method does not exist

From: Date: Fri, 15 Oct 2010 01:50:12 +0000
Subject: Req #49542 [Com]: __callStatic() only invoked if instance method does not exist
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=49542&edit=1 ID: 49542 Comment by: matt dot lubner at gmail dot com Reported by: mjs at beebo dot org Summary: __callStatic() only invoked if instance method does not exist Status: Open Type: Feature/Change Request Package: Feature/Change Request Operating System: Ubuntu PHP Version: 5.3.0 Block user comment: N New Comment: I should have also mentioned that calling an instance method in a static context does not generate an error, unless the called method has any references to $this (which of course is not in scope), in which case a fatal error occurs. This can be a little tricky to track down, and so would be preferable if instance methods were simply not in scope for static contexts. Previous Comments: ------------------------------------------------------------------------ [2010-10-15 03:40:41] matt dot lubner at gmail dot com With PHP 5.3.2, if the instance method bar() is *not* public, and __callStatic() *is*, __callStatic() will be invoked, because bar() won't be in scope. Unfortunately, this seems like a horribly hacked work-around. Ideally, public instance methods should not be in scope from a static context, so __callStatic() will be called instead. ------------------------------------------------------------------------ [2009-09-13 14:34:38] mjs at beebo dot org Description: ------------ A static call to Foo::bar() does not invoke __callStatic() if an instance method bar() exists. One reason you might want this is to convert static calls to Foo::bar() to the equivalent operation on a singleton: public static function __callStatic($name, $args) { $obj = self::getInstance(); return call_user_func_array(array($obj, $name), $args); } In the sample code below, __callStatic() is not invoked even though the caller has deliberately initiated a static call. Reproduce code: --------------- <?php class Foo { public static function __callStatic($name, $args) { echo "In __callStatic()\n"; } public function bar() { echo "In bar()\n"; } } echo Foo::bar(); Expected result: ---------------- In _callStatic() Actual result: -------------- PHP Strict Standards: Non-static method Foo::bar() should not be called statically in /mnt/hgfs/workspace/scratch/wart1.php on line 15 Strict Standards: Non-static method Foo::bar() should not be called statically in /mnt/hgfs/workspace/scratch/wart1.php on line 15 In bar() ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=49542&edit=1

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