PHP to replace the way to process HTML pages

The example in this article describes how PHP is replacing the processing of HTML pages. Share to everyone for your reference. Specifically as follows:

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<?php if (!defined (' BasePath ')) exit (' No Direct script access allowed '); /** * HTML Replacement processing class, consider the following several substitutions * 1. IMG src: '/<img (. +?) src= ([' "])? (.+?) ([>]+?) /I ' * 2. a href: '/<a (. +?) href= ([' "])? (.+?) ([>]+?) /I ' * 3. IFRAM.SRC: '/<iframe (. +?) src= ([' "])? (.+?) ([>]+?) /I ' * 4. Frame src: '/<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 $re Lative_dirname; Private $projectid; Private $moudle; function __construct () {$this->ci = &get_instance ();}/** * Replace * @param string $content HTML content * @param string $ Relative relative path * @param int $projectid Project ID * @moudle string $moudle template ID: Udata,tdata,tresult,dresult */Public function M Y_replace ($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 '); : $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 = '/<img (. +?) src= ([' "])? (.+?) ([>]+?) /I '; $content = Preg_replace_callback ($pattern, Array ($this, ' image_replace '), $content); $pattern = '/<a (. +?) href= ([' "])? (.+?) ([>]+?) /I '; $content = Preg_replace_callback ($pattern, Array ($this, ' html_replace '), $content); $pattern = '/<iframe (. +?) src= ([' "])? (.+?) ([>]+?) /I '; $content = Preg_replace_callback ($pattern, Array ($this, ' iframe_replace '), $content); $pattern = '/<frame (. +?) src= ([' "])? (.+?) ([>]+?) /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 ($matches) < 4) return '; if (Empty ($matches [3])) return '; $ma TCHES[3] = RTrim ($matches [3], ' "/"); Gets the ID of the picture $parent _dir_num = Substr_count ($matches [3], '.. /'); $relative _dirname = $this->relative_dirname; For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($image _id)) {if ($this->moudle = = ' Dresult ') {return "<img". $matches [1]. " Src= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /readpic/$image _id?pid= ". $this->projectid. $matches [2]. $matches [4]; else {return "<img". $matches [1]. " Src= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /picfile/$image _id?pid= ". $this->projectid. $matches [2]. $matches [4]; } else {return "<img". $matches [1]. " Src= ". $matches [2]. $matches [3]. $matches [2]. $matches [4]; The Private Function Html_replace ($matches) {if (count ($matches) < 4) return '; if (Empty ($matches [3])) return '; If the link to href ($matches [3]) begins with http or www or mailto,//if (Preg_match (. +?) is not processed. /I ', $matches [3])]//Return "<a". $matches [1]. " Href= ". $matches [2]. $matches [3]. $matches [4]; $matches [3] = RTrim ($matches [3], ' "/"); Handle the anchor point if (Substr_count ($matches [3], ' # ') >0) $matches [3] = substr ($matches [3],0,strrpos ($matches [3], ' # ')]; Gets the ID of the HTML $parent _dir_num = suBstr_count ($matches [3], '. /'); $relative _dirname = $this->relative_dirname; For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($txtfile _id)) {if ($this->moudle = = ' Dresult ') {return "<a". $matches [1]. " Href= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /readfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; else {return "<a". $matches [1]. " Href= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /txtfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; } else {return "<a". $matches [1]. " Href= ". $matches [2]. $matches [3]. $matches [2]. $matches [4]; }} Private Function Iframe_replace ($matches) {if (COUNT ($matches) < 4) return "; if (Empty ($matches [3])) return "; $matches [3] = RTrim ($matches [3], ' "/"); Handle the anchor point if (Substr_count ($matches [3], ' # ') >0) $matches [3] = substr ($matches [3],0,strrpos ($matches [3], ' # ')]; Gets the ID of the HTML $parent _dir_num = Substr_count ($matches [3], '.. /'); $relative _dirname = $this->relative_dirname; For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($txtfile _id)) {if ($this->moudle = = ' Dresult ') {return "<iframe". $matches [1]. " Src= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /readfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; else {return "<iframe". $matches [1]. " Src= ". $matches [2]. $this->ci->config->item (" BasE_url ")." cdms/". $this->moudle." /txtfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; } else {return "<iframe". $matches [1]. " Src= ". $matches [2]. $matches [3]. $matches [2]. $matches [4]; The Private Function Frame_replace ($matches) {if (count ($matches) < 4) return '; if (Empty ($matches [3])) return '; $matches [3] = RTrim ($matches [3], ' "/"); Handle the anchor point if (Substr_count ($matches [3], ' # ') >0) $matches [3] = substr ($matches [3],0,strrpos ($matches [3], ' # ')]; Gets the ID of the HTML $parent _dir_num = Substr_count ($matches [3], '.. /'); $relative _dirname = $this->relative_dirname; For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($txtfile _id)) {if ($this->moudle = = ' Dresult ') {return "<frame". $matches [1]. " SRc= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /readfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; else {return "<frame". $matches [1]. " Src= ". $matches [2]. $this->ci->config->item (" Base_url ")." cdms/". $this->moudle." /txtfile/$txtfile _id?pid= ". $this->projectid. $matches [2]. $matches [4]; } else {return "<frame". $matches [1]. " Src= ". $matches [2]. $matches [3]. $matches [2]. $matches [4]; The Private Function Js_replace ($matches) {if (count ($matches) < 4) return '; if (Empty ($matches [3])) return ';//department Reason link $arr _html = Split (', ', $matches [3]); $href = $arr _html[0]; $other = '; For ($i =0 $i <count ($arr _html), $i + +) $other = $arr _html[$i]. ","; $other = RTrim ($other, ","); $href =rtrim ($href, ' "); Handle the anchor point if (Substr_count ($href, ' # ') >0) return "window.open". $matches [1]. $matches [2]. $matches [3]. $matches [4];; Gets the ID of the HTML $parent _dir_num = Substr_count ($href, '.. /'); $relative _dirname = $this->relative_dirname;For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($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 ($matches) < 5) return "; if (Empty ($matches [4])) return '; &nbsp ; $matches [4]= RTrim ($matches [4], ' "/"); Gets the ID of the picture $parent _dir_num = Substr_count ($matches [4], '.. /'); $relative _dirname = $this->relative_dirname; For ($i =0 $i < $parent _dir_num $i + +) {$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, $this->projectid); Output if (!empty ($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 * *

I hope this article will help you with your PHP programming.