问题描述
可能的重复:
获取 A 元素的 href 属性
解析所有链接在href"中包含特定单词标签
我正在使用以下函数将 _blank 添加到我网站上的所有链接.
I'm using the following function to add _blank to all the links on my website.
function targetBlank($text) {
$return = str_replace('<a', '<a target="_blank"', $text);
return $return;
}
我正在寻找一种解决方案,仅在外部链接(而不是我的域)而不是所有链接上应用此功能.
I'm looking for a solution to apply this function only on external links (not on my domain) instead of all links.
推荐答案
这是一个依赖于 $_SERVER['HTTP_HOST']
的尝试解决方案:
Here's an attempted solution that relies on $_SERVER['HTTP_HOST']
:
function targetBlank($text) {
if( strpos( $text, $_SERVER['HTTP_HOST'] ) === false )
return str_replace('<a', '<a target="_blank"', $text);
return $text;
}
未经测试,但它应该可以工作.@meager 也是正确的,因为如果该标签已经定义了目标,这将产生格式错误的锚标签,但是,因为它只会对您传入的 html 字符串进行操作,然后 和只要你只传递带有锚标签的字符串,那么就应该是安全的.
Untested, but it should work. @meager is also correct in that this will produce malformed anchor tags if that tag already has a target defined, however, since it will only operate on html strings that you pass in, then <abbr>
and so on should be safe as long as you only pass strings with anchor tags in them.
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