Matches the URL of the page content, how to resolve

Regular URLs that match the content of the Web page
I want to match the URL of this URL http://www.425sf.com/.

PHP Code

  
   $url = "http://www.425sf.com/";//capture Address $content = file_get_contents ($url); $patten = "^ ((https|http|ftp|rtsp|mms)?:/ /)? ([0-9a-z_!~* ' (). &=+$%-]+:)? [0-9a-z_!~* ' (). &=+$%-]+@)? ([0-9]{1,3}\.) {3} [0-9] {1,3}| ([0-9a-z_!~* ' ()-]+\.) * ([0-9a-z][0-9a-z-]{0,61})? [0-9a-z]\. [A-z] {2,6}) (: [0-9]{1,4})? ((/?)| (/[0-9a-z_!~* ' ().;?: @&=+$,%#-]+) +/?) $ ";p reg_match_all ($patten, $content, $matches);

The above matching regular I was referring to here
Http://topic.csdn.net/u/20070307/14/87e6b878-800e-4a88-830e-7d0eeeaba891.html
I tried to be more accurate with regular test tools.
But PHP doesn't seem to work here.

------Solution--------------------

PHP Code

$html = <<
  
   http://www.baidu.com [1] = http://hi.baidu.com?info=aaa) */
   
------Solution--------------------
   
LS Positive solution:
   

   

   
Preg_match_all
   
(PHP 4, PHP 5)
   

   
Preg_match_all― Global Regular expression matching
   

   
Description
   
int Preg_match_all (string $pattern, String $subject, array $matches [, int $flags])
   
Searches in subject for all content that matches the regular expression given by the pattern and places the result in matches in the order specified by flags.
   

   
After the first match is searched, the next search starts at the end of the previous match.
   

   
Flags can be a combination of the following tags (note that it makes no sense to combine Preg_pattern_order and Preg_set_order):
   

   
Preg_pattern_order
   
The results are sorted so that the $matches [0] is an array of all pattern matches, $matches [1] is an array of strings that match the sub-patterns in the first parenthesis, and so on.
   

   

   

   Preg_match_all ("|<[^>]+> (. *)
   ]+>| U ",
   
"
   Example:This is a test ",
   
$out, Preg_pattern_order);
   
Print $out [0][0]. ",". $out [0][1]. " \ n ";
   
Print $out [1][0]. ",". $out [1][1]. " \ n ";
   
?>
   
This example will output:
   

   

   Example:, this is a test
   
Example:, this is a test
   
Therefore, $out [0] contains a string that matches the entire pattern, $out [1] contains a string between a pair of HTML tags.
   

   

   
Preg_set_order
   
The result is sorted so that $matches [0] is an array of the first set of matches, $matches [1] is an array of the second set of matches, and so on.
   

   

   Preg_match_all ("|<[^>]+> (. *)
   ]+>| U ",
   
"
   Example:This is a test ",
   
$out, Preg_set_order);
   
Print $out [0][0]. ",". $out [0][1]. " \ n ";
   
Print $out [1][0]. ",". $out [1][1]. " \ n ";
   
?>
   
This example will output:
   

   

   Example:, Example:
   
This is a test that is a test
   

   
In this example, $matches [0] is the first set of matching results, $matches [0][0] contains text that matches the entire pattern, $matches [0][1] contains the text that matches the first sub-pattern, and so on. Similarly, $matches [1] is the second set of matching results, and so on.
   

   
Preg_offset_capture
   
If this tag is set, the matching result for each occurrence also returns its subordinate string offset. Note that this changes the value of the returned array so that each cell is also an array, where the first item is the matching string, and the second item is its offset in subject. This tag is available from PHP 4.3.0.
   

   

   
If no token is given, it is assumed to be preg_pattern_order.
   

   
Returns the number of times the entire pattern match (possibly 0), if an error returns FALSE.
   

   

   
Example #1 Get all the phone numbers from a text
   

   

   Preg_match_all ("/\ (?  (\d{3})?  \)? (? (1) [\-\s]) \d{3}-\d{4}/x ",
   
"Call 555-1212 or 1-800-555-1212", $phones);
   
?>
   

   

   
Example #2 Search for matching HTML tags (greedy)
   

   

   \\2 is an example of a reverse reference, and its meaning in PCRE is
   
Must match the contents of the second set of parentheses in the regular expression itself, in this case
   
Is ([\w]+). Because the strings are in double quotes, you need to
   
Add a backslash.
   
$html = "
   Bold textClick Me ";
   
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