更新时间:2023-02-06 20:25:43
$str = preg_replace_callback('/\[([^][]*)]\(([^()]*)\)|(\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|])/i',
function($matches) {
if(isset($matches[3])) {
// replace a regular URL with a link
return "<a href='".$matches[3]."' target='_blank'>untitled</a>";
} else {
// replace a URL with a link which is like this pattern: [LinkName](LinkAddress)
return "<a href=".$matches[2]." target='_blank'>".$matches[1]."</a>";
}
}, $str);
echo $str;
One way would be to do it like this. You merge your two expressions together with the alternative character |
. Then in your callback function you just check if your third capture group is set (isset($matches[3])
) and if yes, then your second regular expression matched the string and you replace a normal link, otherwise you replace with link/linktext.
I hope you understand everything and I could help you.