PHP Match character link address program code _php tutorial

Determine if a string contains hyperlinks

The code is as follows
$str = "SSDSFSDFSDFSS"; if (Preg_match ("/]*>| ]*>/i ", $str)) { echo "The string has a hyperlink"; } Else { echo "The string does not have a hyperlink tag"; } ?>

Let's just filter the connection section below.

The code is as follows
echo Preg_replace ("/(? <=href=) ([^>]*) (?=>)/I", "#", "Hello, click here to see Hello, click here to see"); ?>

Regular:/(? <=href=) ([^>]*) (?=>)/

(? <=exp) matches the position after exp
(? =exp) matches the position of the exp front
This regular matches all characters that are not ">" before ">" After href=

Example:

Find these characters (URLs) and replace them with # to get rid of all the links in the HTML.

Now share an instance of extracting a super connection

The code is as follows

function Match_links ($document) { Preg_match_all ("' ]+)" [^>]*>? (.*?)' Isx ", $document, $links); while (list ($key, $val) = each ($links [2])) { if (!empty ($val)) $match [' link '] [] = $val; } while (list ($key, $val) = each ($links [3])) { if (!empty ($val)) $match [' link '] [] = $val; } while (list ($key, $val) = each ($links [4])) { if (!empty ($val)) $match [' content '] = $val; } while (list ($key, $val) = each ($links [0])) { if (!empty ($val)) $match [' All '] [] = $val; } return $match; }

http://www.bkjia.com/PHPjc/372042.html www.bkjia.com true http://www.bkjia.com/PHPjc/372042.html techarticle determine if a string contains the hyperlink code as follows $str =SSDSFA target= ' _blank ' href= ' http://www.45it.net/' SDF/ASDFSS; if (Preg_match (/a/s+href =[^]*|//[^a]*a[^]*/i, $str)) {...

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