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php正则替换处理html页面的方法

　　本文实例讲述了php正则替换处理html页面的方法。分享给大家供大家参考。具体如下：

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if(!defined('BASEPATH')) exit('No direct script access allowed');

/**

* HTML替换处理类，考虑如下几种替换

* 1. img src : '/@@##@@]+?)/i'

* 2. a href : '/]+?)/i'

* 3. ifram.src : '/]+?)/i'

* 4. frame src : '/]+?)/i'

* 5. js : '/window.open([( ]+?)([\'" ]+?)(.+?)([ )+?])/i'

* 6. css : '/background(.+?)url([( ])([\'" ]+?)(.+?)([ )+?])/i'

class Myreplace {

private $moudle_array = array('udata','tdata','tresult','dresult');

private $content;

private $relative_dirname;

private $projectid;

private $moudle;

function __construct() {

$this->CI = &get_instance ();

}

/**

* 替换

* @param string $content HTML内容

* @param string $relative 相对路径

* @param int $projectid 项目id

* @moudle string $moudle 模板标识: udata,tdata,tresult,dresult

public function my_replace($content,$relative,$projectid,$moudle) {

$this->content = $content;

$this->relative_dirname = $relative;

$this->projectid = $projectid;

if(in_array(strtolower($moudle),$this->moudle_array))

$this->moudle = $moudle;

else exit;

switch($this->moudle) {

case 'udata':

$this->CI->load->model('mupload_data','model');

break;

case 'tdata':

$this->CI->load->model('taskdata','model');

break;

case 'tresult':

$this->CI->load->model('taskresult','model');

break;

case 'dresult':

$this->CI->load->model('dmsresult','model');

break;

default:

break;

}

$pattern = '/@@##@@]+?)/i';

$content = preg_replace_callback( $pattern, array($this, 'image_replace') , $content );

$pattern = '/]+?)/i';

$content = preg_replace_callback( $pattern, array($this, 'html_replace') , $content );

$pattern = '/]+?)/i';

$content = preg_replace_callback( $pattern, array($this, 'iframe_replace') , $content );

$pattern = '/]+?)/i';

$content = preg_replace_callback( $pattern, array($this, 'frame_replace'), $content );

$pattern = '/window.open([( ]+?)([\'" ]+?)(.+?)([ )]+?)/i';

$content = preg_replace_callback( $pattern, array($this, 'js_replace'), $content );

$pattern = '/background(.+?)url([( ])([\'" ]+?)(.+?)([ )+?])/i';

$content = preg_replace_callback( $pattern, array($this, 'css_replace'), $content);

return $content;

}

private function image_replace($matches) {

if(count($matches)

if( empty($matches[3]) ) return '';

$matches[3] = rtrim($matches[3],'\'"/');

//获取图片的id

$parent_dir_num = substr_count( $matches[3], '../');

$relative_dirname = $this->relative_dirname;

for($i=0; $i

$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );

}

$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');

$image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);

//输出

if( !empty($image_id) ) {

if($this->moudle == 'dresult') {

return "@@##@@CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];

} else {

return "@@##@@CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];

}

} else {

return "@@##@@

}

private function html_replace( $matches ) {

if(count($matches)

if( empty($matches[3]) ) return '';

//如果href的链接($matches[3])以http或www或mailto开始，则不进行处理

//if(preg_match('/^[http|www|mailto](.+?)/i',$matches[3]))

// return "

$matches[3] = rtrim($matches[3],'\'"/');

//处理锚点

if(substr_count($matches[3],'#')>0)

$matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));

//获取html的id

$parent_dir_num = substr_count( $matches[3], '../');

$relative_dirname = $this->relative_dirname;

for($i=0; $i

$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );

}

$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');

$txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);

//输出

if( !empty($txtfile_id ) ) {

if($this->moudle == 'dresult') {

return "CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];

} else {

return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];

}

} else {

return "

}

private function iframe_replace( $matches ) {

if(count($matches)

if( empty($matches[3]) ) return '';

$matches[3] = rtrim($matches[3],'\'"/');

//处理锚点

if(substr_count($matches[3],'#')>0)

$matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));

//获取html的id

$parent_dir_num = substr_count( $matches[3], '../');

$relative_dirname = $this->relative_dirname;

for($i=0; $i

$relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );

}

$relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');

$txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);

//输出

if( !empty($txtfile_id ) ) {

if($this->moudle == 'dresult') {

return "CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];

} else {

return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];

}

} else {

return " } } private function frame_replace( $matches ) { if(count($matches) if( empty($matches[3]) ) return ''; $matches[3] = rtrim($matches[3],'\'"/'); //处理锚点 if(substr_count($matches[3],'#')>0) $matches[3] = substr($matches[3],0,strrpos($matches[3],'#')); //获取html的id $parent_dir_num = substr_count( $matches[3], '../'); $relative_dirname = $this->relative_dirname; for($i=0; $i $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") ); } $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./'); $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid); //输出 if( !empty($txtfile_id ) ) { if($this->moudle == 'dresult') { return "<frame>CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid.$matches[2].$matches[4]; } else { return "<frame>CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].$matches[4]; } } else { return "<frame> } } private function js_replace( $matches ){ if(count($matches) if( empty($matches[3]) ) return ''; //处理链接 $arr_html = split(',',$matches[3]); $href = $arr_html[0]; $other = ''; for($i=0; $i<count>$other = $arr_html[$i].", "; $other = rtrim($other,"\, "); $href =rtrim($href,'\'\"'); //处理锚点 if(substr_count($href,'#')>0) return "window.open".$matches[1].$matches[2].$matches[3].$matches[4];; //获取html的id $parent_dir_num = substr_count( $href, '../'); $relative_dirname = $this->relative_dirname; for($i=0; $i $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") ); } $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($href,'./'); $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid); //输出 if( !empty($txtfile_id ) ) { if($this->moudle == 'dresult') { return "window.open".$matches[1].$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4]; } else { return "window.open".$matches[1].$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4]; } } else { return "window.open".$matches[1].$matches[2].$matches[3].$matches[4]; } } private function css_replace( $matches ) { if(count($matches) if( empty($matches[4]) ) return ''; $matches[4] = rtrim($matches[4],'\'"/'); //获取图片的id $parent_dir_num = substr_count( $matches[4], '../'); $relative_dirname = $this->relative_dirname; for($i=0; $i $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") ); } $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[4],'./'); $image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid); //输出 if( !empty($image_id) ) { if($this->moudle == 'dresult') { return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[3]. $matches[5]; } else { return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[3]. $matches[5]; } } else { return "background".$matches[1]."url".$matches[2].$matches[3].$matches[4].$matches[3].$matches[5]; } } } /* End of Myreplace.php */ /* Location: /application/libraries/Myreplace.php */ </count>

　　希望本文所述对大家的php程序设计有所帮助。