PHP自动加a标签 将网址字符串转换成超级链接

[php]代码库

function makeClickableLinks($text) { 
	$text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)', 
	'<a href="\1">\1</a>', $text); 
	$text = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)', 
	'\1<a href="http://\2">\2</a>', $text); 
	$text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})', 
	'<a href="mailto:\1">\1</a>', $text);  
	 
	return $text; 
}