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功能： 1.获取内容中的url，email，image。 2.替换内容中的url，email，image。 url：<a href="url">xxx email：admin@admin.com image：<img src="image"> Grep.class.php
<div class="codetitle"><a style="CURSOR: pointer" data="12687" class="copybut" id="copybut12687" onclick="doCopy('code12687')"> 代码如下:<div class="codebody" id="code12687">
<?php
/* grep class
Date: 2013-06-15
Author: fdipzone
Ver: 1.0
Func:
set: 设置内容
get: 返回指定的内容
replace: 返回替换后的内容
get_pattern 根据type返回pattern
/ class Grep{ // class start private $_pattern = array(
'url' => '/<a.?href="((http(s)?://).?)".?/si',
'email' => '/([w-.]+@[w-.]+(.w+))/',
'image' => '/<img.?src="(http://.+.(jpg|jpeg|gif|bmp|png))">/i'
); private $_content = ''; // 源内容
/ 設置搜尋的內容
@param String $content
/
public function set($content=''){
$this->_content = $content;
}
/ 获取指定内容
@param String $type
@param int $unique 0:all 1:unique
@return Array
/
public function get($type='',$unique=0){ $type = strtolower($type); if($this->_content=='' || !in_array($type,array_keys($this->_pattern))){
return array();
} $pattern = $this->get_pattern($type); // 获取pattern preg_match_all($pattern,$this->_content,$matches); return isset($matches[1])? ( $unique==0? $matches[1] : array_unique($matches[1]) ) : array(); }
/ 获取替换后的内容
@param String $type
@param String $callback
@return String
/
public function replace($type='',$callback=''){ $type = strtolower($type); if($this->_content=='' || !in_array($type,array_keys($this->_pattern)) || $callback==''){
return $this->_content;
} $pattern = $this->get_pattern($type); return preg_replace_callback($pattern,$callback,$this->_content); }
/ 根据type获取pattern
@param String $type
@return String
*/
private function get_pattern($type){
return $this->_pattern[$type];
}
} // class end ?>
Demo
<div class="codetitle"><a style="CURSOR: pointer" data="4401" class="copybut" id="copybut4401" onclick="doCopy('code4401')"> 代码如下:<div class="codebody" id="code4401">
<?php
header('content-type:text/htm;charset=utf8'); require('Grep.class.php'); $content = file_get_contents('http://www.test.com/'); $obj = new Grep();
$obj->set($content); $url = $obj->get('url',0);
$email = $obj->get('email',1);
$image = $obj->get('image',1); print_r($url);
print_r($email);
print_r($image); $url_new = $obj->replace('url','replace_url');
echo $url_new; function replace_url($matches){
return isset($matches[1])? '[url]'.$matches[1].'[/url]' : '';
}
?>
（编辑：李大同）
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