复制代码 代码如下:

function text2links($str='') {

if($str=='' or !preg_match('/(http|www.|@)/i', $str)) { return $str; }

$lines = explode("n", $str); $new_text = '';

while (list($k,$l) = each($lines)) {

// replace links:

$l = preg_replace("/([ t]|^)www./i", "1http://www.", $l);

$l = preg_replace("/([ t]|^)ftp./i", "1ftp://ftp.", $l);

$l = preg_replace("/(http://[^ )rn!]+)/i",

"<a href="1">1</a>", $l);

$l = preg_replace("/(https://[^ )rn!]+)/i",

"<a href="1">1</a>", $l);

$l = preg_replace("/(ftp://[^ )rn!]+)/i",

"<a href="1">1</a>", $l);

$l = preg_replace(

"/([-a-z0-9_]+(.[_a-z0-9-]+)*@([a-z0-9-]+(.[a-z0-9-]+)+))/i",

"<a href="mailto:1">1</a>", $l);

$new_text .= $l."n";

}

return $new_text;

}