search
Homephp教程php手册php 获取页面中指定内容的实现类

功能:

1.获取内容中的url,email,image。

2.替换内容中的url,email,image。

url:xxx

email:admin@admin.com

image:php 获取页面中指定内容的实现类

Grep.class.php

复制代码 代码如下:


/** 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' => '/'email' => '/([\w\-\.]+@[\w\-\.]+(\.\w+))/',
'image' => '/php 获取页面中指定内容的实现类/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

复制代码 代码如下:


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]' : '';
}
?>

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function