$Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/", '<a href="$1" target="external-link">$1</a>', $Text);
$Text = preg_replace("(\[url\=([$URLSearchString]*)\](.+?)\[/url\])", '<a href="$1" target="external-link">$2</a>', $Text);
$Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/", '<a href="$1" target="external-link">$1</a>', $Text);
$Text = preg_replace("(\[url\=([$URLSearchString]*)\](.+?)\[/url\])", '<a href="$1" target="external-link">$2</a>', $Text);