Php regular expression replaces all hyperlinks in the webpage to filter all URLs in the webpage

Source: Internet
Author: User
Tags php regular expression preg regular expression

Replace all hyperlinks in the webpage with regular expressions.

The code is as follows: Copy code

<? Php
$ Content = file_get_contents('test.html ');
$ Url = 'http: // www.111cn.net '; // New url to be replaced
$ Preg = '/[s] href = ("|') [S] * (" | ')/I ';
$ Replace = 'href = "'. $ url .'"';
$ Content = preg_replace ($ preg, $ replace, $ content); // regular expression replacement
Create_log ('newhtml ', $ content); // generate a new file
?>

Below are the file write operations

The code is as follows: Copy code

Function create_log ($ filename, $ text ){
If (strtolower (substr ($ filename,-4 ))! = 'Html '){
$ Filename. = '.html ';
       }
$ Filename = dirname (_ FILE _). '/'. $ filename;
If (! File_exists ($ filename )){
Exec ('touch'. $ filename );
Exec ('chmod 777 '. $ filename );
       }
$ Handle = fopen ($ filename, "w + B ");
$ Text. = "rn ";
Fwrite ($ handle, $ text );
Fclose ($ handle );
}

The following is my collection function.

The code is as follows: Copy code

$ Url = 'http: // www.111cn.net ';
$ Body = @ file_get_contents ($ url );
Preg_match_all ('/href = [' "]? ([^ '"] *) ['"]?> (. *)/I ', $ body, $ B );
$ Nums = array ();
Foreach ($ B [1] as $ u ){
If (in_array ($ u, $ nums )){
Continue;
  }
$ Nums [] = $ u;
$ Title = strip_tags ($ u );
Echo $ title. "</br> ";
}

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