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52ky 发表于 2023-1-5 13:49:16

php源码：自动识别文本中的链接

function text2links($str='') {
if(!preg_match('/(http|www\.|@)/i', $str)) { return $str; }
$lines = explode("<br />", $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:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l);

        $l = preg_replace("/(https:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l);

        $l = preg_replace("/(ftp:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l);

        $l = preg_replace("/([-a-z0-9_]+(\.+)*@(+(\.+)+))/i", "<a href=\"mailto:\\1\">\\1</a>", $l);

        $new_text .= $l.'<br />';
}

return $new_text;
}

(function text2links($str='') {
if(!preg_match('/(http|www\.|@)/i', $str)) { return $str; }
$lines = explode("<br />", $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:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l) ;

$l = preg_replace("/(https:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l) ;

$l = preg_replace("/(ftp:\/\/[^ )!]+)/i", "<a href=\"\\1\">\\1</a>", $l) ;

$l = preg_replace("/([-a-z0-9_]+(\.+)*@(+(\.+)+))/i", "<a href=\"mailto:\\1\">\\1</a>", $l);

$new_text .= $l.'<br />';
}

return $new_text;
})

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