A simple way to match URLs with regular expressions in php_PHP Tutorial

An alternative to the parse_url() function seen on PHP’s official website. The result is similar to the parse_url() function, which is implemented using regular expressions. A URI is that every resource available on the Web - HTML documents, images, video clips, programs, etc. - is located by a Universal Resource Identifier ("URI"). Object grouping:

Copy code The code is as follows:

^(([^:/?#]+):)? (//([^/?#]*))?([^?#]*)(?([^#]*))?(#(.*))?
12 3 4 4

The test code is as follows:

Copy codeThe code is as follows:

$ search = '~^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(?([^#]*) )?(#(.*))?~i';
$url = 'http://www.jb51.net/pub/ietf/uri/#Gonn';
$url = trim($ url);
preg_match_all($search, $url ,$rr);
printf("

The output URL data is:

%s

n" ,var_export( $rr ,TRUE));

/*
Each group is as follows
$1 = http:
$2 = http
$3 = //www.nowamagic.net
$4 = www.nowamagic.net
$5 = /pub/ietf/uri/
$6 =
$7 =
$8 = #Gonn
$9 = Gonn
*/
?>

The above regular expression can get any part of the URL, the following code is simpler:

Copy code Code As follows:

// Get the host name from the URL
preg_match("/^(http://)?([^/]+)/i ", "http://www.jb51.net/index.html", $matches);
$host = $matches[2];
// Get the next two paragraphs from the host name
preg_match("/[^./]+.[^./]+$/", $host, $matches);
echo "domain name is: {$matches[0]}n";
?>

http://www.bkjia.com/PHPjc/825116.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/825116.htmlTechArticleAn alternative to the parse_url() function seen on PHP’s official website. The result is similar to the parse_url() function, which is implemented using regular expressions. A URI is for every resource available on the web - HTML documents, images...