note 114541 added to language.references.return
| From: | Anonymous | Date: | Wed, 05 Mar 2014 04:18:15 +0000 |
| Subject: | note 114541 added to language.references.return | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-198792@lists.php.net to get a copy of this message | ||
I learned a painful lesson working with a class method that would pass by reference.
In short, if you have a method in a class that is initialed with ampersand during declaration, do
not use another ampersand when using the method as in &$this->method();
For example
<?php
class A {
public function &hello(){
static $a='';
return $a;
}
public function bello(){
$b=&$this->hello(); // incorrect. Do not use ampersand.
$b=$this->hello(); // $b is a reference to the static variable.
}
?>
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Server IP: 192.41.45.150
Probable Submitter: 24.185.59.103
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Manual Page -- http://php.net/manual/en/language.references.return.php
Edit -- https://master.php.net/note/edit/114541
Del: integrated -- https://master.php.net/note/delete/114541/integrated
Del: useless -- https://master.php.net/note/delete/114541/useless
Del: bad code -- https://master.php.net/note/delete/114541/bad+code
Del: spam -- https://master.php.net/note/delete/114541/spam
Del: non-english -- https://master.php.net/note/delete/114541/non-english
Del: in docs -- https://master.php.net/note/delete/114541/in+docs
Del: other reasons-- https://master.php.net/note/delete/114541
Reject -- https://master.php.net/note/reject/114541
Search -- https://master.php.net/manage/user-notes.php