note 93057 added to language.oop5.autoload
| From: | dot) | Date: | Fri, 21 Aug 2009 02:24:11 +0000 |
| Subject: | note 93057 added to language.oop5.autoload | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-159724@lists.php.net to get a copy of this message | ||
Hi,
Because the scripting engine just find the class declaration in the body of the __autoload()
function, you also can declare the missing class in the __autoload() function. (No need to include
or require a file.)
Let's see the following code:
Example 1.:
<?php
function __autoload($className){
echo "Now loading: $className<br />";
class SuperClass {
}
}
class DerivedClass extends SuperClass {
}
class AnotherDerivedClass extends SuperClass {
}
?>
The scripting engine will found the SuperClass class.
Example 2.:
You also can do it with the eval function, and if you dinamycally declare the class, you don't
get a Fatal Error, and you can do many interesting things with the eval function;)
<?php
function __autoload($className){
echo "Now loading: $className<br />";
eval("class $className {}");
}
class DerivedClass extends SuperClass {
}
class AnotherDerivedClass extends SuperClass {
}
?>
----
Server IP: 209.41.74.194
Probable Submitter: 62.68.186.60
----
Manual Page -- http://www.php.net/manual/en/language.oop5.autoload.php
Edit -- https://master.php.net/note/edit/93057
Del: integrated -- https://master.php.net/note/delete/93057/integrated
Del: useless -- https://master.php.net/note/delete/93057/useless
Del: bad code -- https://master.php.net/note/delete/93057/bad+code
Del: spam -- https://master.php.net/note/delete/93057/spam
Del: non-english -- https://master.php.net/note/delete/93057/non-english
Del: in docs -- https://master.php.net/note/delete/93057/in+docs
Del: other reasons-- https://master.php.net/note/delete/93057
Reject -- https://master.php.net/note/reject/93057
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