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Php regular expression replacement method for processing HTML pages _ PHP Tutorial

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Php regular expression replacement method for processing HTML pages. Php regular expression replacement for processing HTML pages this article describes how php regular expression replacement for processing HTML pages. Share it with you for your reference. The details are as follows :? 1234567891011 php regular expression replacement method for processing HTML pages

This example describes how to use php regular expression replacement to process HTML pages. Share it with you for your reference. The details are as follows:

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If (! Defined ('basepath') exit ('no direct script access allowed ');

/**

* HTML replacement processing class. Consider the following replacement methods:

* 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', 'tresresult', 'dresresult ');

Private $ content;

Private $ relative_dirname;

Private $ projectid;

Private $ moudle;

Function _ construct (){

$ This-> CI = & get_instance ();

}

/**

* Replace

* @ Param string $ content HTML content

* @ Param string $ relative path of relative

* @ Param int $ projectid Project id

* @ Moudle string $ moudle template id: 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 'result ':

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

Break;

Case 'dresresult ':

$ 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) <4) return '';

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

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

// Obtain the image id

$ 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 = 'dresresult '){

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) <4) return '';

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

// If the href link ($ matches [3]) starts with http, www, or mailto, no processing is performed.

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

// Return"

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

// Process the anchor

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

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

// Obtain the html id

$ 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 = 'dresresult '){

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) <4) return '';

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

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

// Process the anchor

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

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

// Obtain the html id

$ 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 = 'dresresult '){

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" < p> <>

}

}

Private function frame_replace ($ matches ){

If (count ($ matches) <4) return '';

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

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

// Process the anchor

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

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

// Obtain the html id

$ 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 = 'dresresult '){

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" < p> <>

}

}

Private function js_replace ($ matches ){

If (count ($ matches) <4) return '';

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

// Process the link

$ Arr_html = split (',', $ matches [3]);

$ Href = $ arr_html [0];

$ Other = '';

For ($ I = 0; $ I

$ Other = $ arr_html [$ I]. ",";

$ Other = rtrim ($ other ,"\,");

$ Href = rtrim ($ href ,'\'\"');

// Process the anchor

If (substr_count ($ href, '#')> 0)

Return "window. open". $ matches [1]. $ matches [2]. $ matches [3]. $ matches [4];

// Obtain the html id

$ 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 = 'dresresult '){

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 '';

$ Matches [4] = rtrim ($ matches [4], '\' "/');

// Obtain the image id

$ 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 = 'dresresult '){

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 php programming.

Examples in this article describes how to use php regular expression replacement to process HTML pages. Share it with you for your reference. The details are as follows :? 1 2 3 4 5 6 7 8 9 10 11...

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