dongxun1978 2013-05-27 04:53
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使用php从url更快地获取内容

I am using php, I want to get the content from url in faster way.
Here is a code which I use.
Code:(1) 

<?php
    $content = file_get_contents('http://www.filehippo.com');
    echo $content;
?>

Here is many other method to read files like fopen(), readfile() etc. But I think file_get_contents() is faster than these method.

In my above code when you execute it you see that it give every thing from this website even images and ads. I want to get only plan html text no css-style, images and ads. How can I get this.
See this to understand.
CODE:(2) 

<?php
    $content = file_get_contents('http://www.filehippo.com');
    // do something to remove css-style, images and ads.
    // return the plain html text in $mod_content.
    echo $mod_content;
?>

If I do that like above then I am going in wrong way, because I already get the full content in variable $content and then modify it.
Can here is any function method or anything else which get the directly plain html text from url.

Below code is written only to understanding, this is not the original php code.
IDEAL CODE:(3); 

<?php
    $plain_content = get_plain_html('http://www.filehippo.com');
    echo $plain_content; // no css-style, images and ads.
?>

If I can get this function it will be much faster than others. Can it is possible.
Thanks.

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2条回答 默认 最新

  • duanqia9034 2013-05-27 05:34
    关注

    Try this. 

    $content = file_get_contents('http://www.filehippo.com');
$this->html =  $content;
$this->process();
function process(){

    // header
    $this->_replace('/.*<head>/ism', "<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE html PUBLIC '-//WAPFORUM//DTD XHTML Mobile 1.0//EN' 'http://www.wapforum.org/DTD/xhtml-mobile10.dtd'><html xmlns='http://www.w3.org/1999/xhtml'><head>");

    // title
    $this->_replace('/<head>.*?(<title>.*<\/title>).*?<\/head>/ism', '<head>$1</head>');

    // strip out divs with little content
    $this->_stripContentlessDivs();

    // divs/p
    $this->_replace('/<div[^>]*>/ism', '') ;
    $this->_replace('/<\/div>/ism','<br/><br/>');
    $this->_replace('/<p[^>]*>/ism','');
    $this->_replace('/<\/p>/ism', '<br/>') ;

    // h tags
    $this->_replace('/<h[1-5][^>]*>(.*?)<\/h[1-5]>/ism', '<br/><b>$1</b><br/><br/>') ;


    // remove align/height/width/style/rel/id/class tags
    $this->_replace('/\salign=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\sheight=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\swidth=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\sstyle=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\srel=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\sid=(\'?\"?).*?\\1/ism','');
    $this->_replace('/\sclass=(\'?\"?).*?\\1/ism','');

    // remove coments
    $this->_replace('/<\!--.*?-->/ism','');

    // remove script/style
    $this->_replace('/<script[^>]*>.*?\/script>/ism','');
    $this->_replace('/<style[^>]*>.*?\/style>/ism','');

    // multiple 

    $this->_replace('/
{2,}/ism','');

    // remove multiple <br/>
    $this->_replace('/(<br\s?\/?>){2}/ism','<br/>');
    $this->_replace('/(<br\s?\/?>\s*){3,}/ism','<br/><br/>');

    //tables
    $this->_replace('/<table[^>]*>/ism', '');
    $this->_replace('/<\/table>/ism', '<br/>');
    $this->_replace('/<(tr|td|th)[^>]*>/ism', '');
    $this->_replace('/<\/(tr|td|th)[^>]*>/ism', '<br/>');

    // wrap and close

}
private function _replace($pattern, $replacement, $limit=-1){
    $this->html = preg_replace($pattern, $replacement, $this->html, $limit);
}

    for more - https://code.google.com/p/phpmobilizer/

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
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