php regex operation for url and # value detection [duplicate]

Question

I want to make all the URL occurrence in text string as link. When I tried

preg_match($reg_exUrl, $text, $url) echo preg_replace($reg_exUrl1, '<a href="'.$url[0].'" rel="nofollow">'.$url[0].'</a>', $text);

it has replaced first match URL at all the places.

Also following regex expression was not able to detect URL which ar starting with www.

$reg_exUrl1 = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/"; $text = "The text you want to filter goes here. http://www.google.com data which in the http://www.apple.com"; if( preg_match($reg_exUrl, $text, $url)){ echo preg_replace($reg_exUrl1, '<a href="'.$url[0].'" rel="nofollow">'.$url[0].'</a>', $text); // if no URLs in the text just return the text }else { echo "IN Else #$".$text; }

This is the code for # value detection in string.

$text= "This is a detection of a #tag values in the text. any #special values with #hash will be shown as link";

$reg_exUrl ="/#\w+/"; if( preg_match($reg_exUrl1, $text, $url)){ echo preg_replace($reg_exUrl1, '<a href="'.$url[0].'" rel="nofollow">'.$url[0].'</a>', $text); }else { echo "not Matched".$text;

}

Instead of posting new questions why don't you search first ? stackoverflow.com/questions/910912/… — Pedro Lobito
– Pedro Lobito, Commented Sep 30, 2015 at 6:31
@PedroLobito, I have already googled it and found the link which you have posted , but if you try any of those given solution, it is not giving desired output. That's the reason i raise the question again. — Mitul Maheshwari
– Mitul Maheshwari, Commented Sep 30, 2015 at 6:46
@PedroLobito if you check care fully my quetion if little bit diffrent than what you have suggested. My problem was i am not able to replace all url, one url detect will work fine in the code which i have pested. — Mitul Maheshwari
– Mitul Maheshwari, Commented Sep 30, 2015 at 7:00

Man Programmer · Accepted Answer · 2015-09-30 06:48:31Z

Check this

$reg_exUrl1 = "~(http|https|ftp|ftps)://[a-zA-Z0-9-.]+\.[a-zA-Z]{2,3}(/S*)?~"; $text = "The text you want to filter goes here. http://www.google.com data which in the http://www.apple.com"; if( preg_match($reg_exUrl1, $text, $url)){ echo preg_replace($reg_exUrl1, '<a href="$0" rel="nofollow">$0</a>', $text); // if no URLs in the text just return the text }else { echo "IN Else #$".$text; }

UPDATE

$reg_exUrl ="/#\w+/"; if( preg_match($reg_exUrl, $text, $url)){ echo preg_replace($reg_exUrl, '<a href="$0" rel="nofollow">$0</a>', $text); }else { echo "not Matched".$text;

not working. also it is replacing first match url to every where.
I need one more favour can you tell me same for the # value detection. and replace all #value values with a link

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