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[PHP] pobierz, plaintext 
// zamiana http w tekście w link
$showcontent = preg_replace('@(https?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@', '<a href="$1">$1</a>', $content);
// zamiana tagu w link
$search = '(#.+?)\b';
$replace =  '<a href="$1">$1</a>';
$showcontent = preg_replace ($search, $replace, $showcontent);
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$preg_replace = array('@(https?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@','@(#.+?)\b@');
$search_replace = array('<a href="$1">$1</a>','<a href="$1">$1</a>');
$showcontent = preg_replace($preg_replace, $search_replace, $content);
[PHP] pobierz, plaintext