note 89478 modified in function.get-called-class by danbrown
| From: | danbrown@php.net | Date: | Wed, 22 Apr 2009 12:49:24 +0000 |
| Subject: | note 89478 modified in function.get-called-class by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-153581@lists.php.net to get a copy of this message | ||
Simplified version:
<?php if (!function_exists('get_called_class')):
function get_called_class()
{
$bt = debug_backtrace();
$lines = file($bt[1]['file']);
preg_match('/([a-zA-Z0-9\_]+)::'.$bt[1]['function'].'/',
$lines[$bt[1]['line']-1],
$matches);
return $matches[1];
}
endif; ?>
When you use this function in singleton, mind there can by only one getInstance() call per line:
<?php
abstract class Singleton { ... }
class MySingleton1 extends Singleton { ... }
class MySingleton2 extends Singleton { ... }
// this will work:
$s1 = MySingleton1::getInstance();
$s2 = MySingleton2::getInstance();
// here will be problem:
$s1 = MySingleton1::getInstance(); $s2 = MySingleton2::getInstance();
?>
--was--
A small correction on my last post. $matches[0] should be $matches[1].
Simplified version:
<?php if (!function_exists('get_called_class')):
function get_called_class()
{
$bt = debug_backtrace();
$lines = file($bt[1]['file']);
preg_match('/([a-zA-Z0-9\_]+)::'.$bt[1]['function'].'/',
$lines[$bt[1]['line']-1],
$matches);
return $matches[1];
}
endif; ?>
When you use this function in singleton, mind there can by only one getInstance() call per line:
<?php
abstract class Singleton { ... }
class MySingleton1 extends Singleton { ... }
class MySingleton2 extends Singleton { ... }
// this will work:
$s1 = MySingleton1::getInstance();
$s2 = MySingleton2::getInstance();
// here will be problem:
$s1 = MySingleton1::getInstance(); $s2 = MySingleton2::getInstance();
?>
http://php.net/manual/en/function.get-called-class.php