Single piece mode of discuz X_PHP tutorial

The article introduces an original article about the single mode of discuz

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代码如下

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$discuz = & discuz_core::instance(); [code language=php]   // instance()属于discuz_core类在class_core.php function &instance() { static $object; if(empty($object)) {   $object = new discuz_core(); } return $object; } [/code] 这里保证单词请求都运用一个discuz_core实例。这里的&写法是为了兼容PHP4的，如果在PHP5中，则可以使用static。 [code language=php] //这里是单件模式的简单例子。 class PHPig { private static $v = null; static function instance() {   if(self::$v == null) {    self::$v = new PHPig();   }   return self::$v; } } $pig1 = PHPig::instance(); $pig2 = PHPig::instance(); if($pig1 === $pig2) { echo '同一个对象'; } else { echo '不是同一个对象'; } [/code]

$discuz = & discuz_core::instance();
[code language=php]

// instance() belongs to discuz_core class in class_core.php
function &instance() {
static $object;
if(empty($object)) {
$ object = new discuz_core();
}
return $object;
}
[/code]
This ensures that word requests use a discuz_core instance. The & writing method here is for compatibility with PHP4. If it is in PHP5, you can use static.
[code language=php]
//Here is a simple example of the singleton pattern.
class PHPig {
private static $v = null;
static function instance() {
if(self::$v == null) {
self: :$v = new PHPig();
}
return self::$v;
}
}
$pig1 = PHPig::instance();$pig2 = PHPig::instance();
if($pig1 === $pig2) {
echo 'same object';
} else {
echo 'Not the same object';
}
[/code]

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http: //www.bkjia.com/PHPjc/444705.htmlTechArticleThe article introduces an original article about the single mode of discuz X. The PPC highlighting plug-in is too unfriendly. I If you post txt content directly, strange problems will occur. As long as X is present at the beginning of the file...