PHP Regular expression _php for removing string hyperlink text tutorial

Because N long ago did some very bad action caused the site content page has some garbage data, this morning, the whole of a string to remove the hyperlink text method, I combine the regular to deal with.

The function of the following instance is to filter all HTML tags and replace all text before H1-H5

The code is as follows

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for ($i =1; $i <=5; $i + +) { $sql = "SELECT * from ' table name ' WHERE ' field ' like ' % '"; $query = mysql_query ($sql) or Die (Mysql_error ()); if (mysql_num_rows ($query)) { while ($rs = Mysql_fetch_array ($query)) { Print_r ($RS); $t = stripslashes ($rs [' field ']); $str = NL2BR (Strip_tags (Addslashes (Removelink ($t))); $sql = "Update table name set field = ' $str ' where id= '. $rs [' id ']; if (mysql_query ($sql)) { echo $rs [' id ']. ' Success '; } Else { Echo Mysql_error (); } } } Else { Echo ' has been updated with no record '. $sql. ' '; } } function Removelink ($t) { $str = Preg_replace ("/]*href=[^>]*>| ]*>/i "," ", $t); $str = Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $t); $str = Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $str); $str = Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $str); $str = Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $str); $str = Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $str); Return Re_h ($STR); } function Re_h ($STR) { $str = Str_replace (' ', ', $str); $str = Str_replace (' ', ', $str); $str = Str_replace (' ', ', $str); $str = Str_replace (' ', ', $str); $str = Str_replace (' ', ', $str); $str = Str_replace (' ', ', $str); $str = Str_replace ('', ', $str); $str = Str_replace ('', ', $str); $str = Str_replace ('', ', $str); $str = Str_replace ('', ', $str); return $str; }

It uses the following regular expression

The code is as follows	Copy Code
Preg_replace ("/(? is) (? <= ).*? (?= )/I "," ", $t);

This is the core code.

For example, you need to remove the content of hyperlinks in the text, you need to use regular expressions. For example you can use $STR = Preg_replace ("/]*href=[^>]*>| ]*>/i "," ", $strhtml); This section to achieve the requirements, if you want more solutions, you can see the following.

1. Delete the hyperlinks in the content

The code is as follows	Copy Code
Ereg_replace (']*) > ([^<]*) ', ' \2 ', $content); Ereg_replace ("]*>|", "", $content);

2. Eliminate hyperlinks that contain specific words

The code is as follows	Copy Code
$find = "This string is my find"; $string = ' replaced ';//To replace the hyperlink with the content Echo ereg_replace (']*) > ([^<]* '. $find. ' [^>]*] ', ' \2 ', $content);

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