php 如何在现有的 <a href=""> </a> 上添加 target="_blank"？
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How to add target="_blank" on the existing <a href=""> </a>?
提问by Ray
I have a variable that contains the following text in PhP:
我在 PhP 中有一个包含以下文本的变量：
$description = "Flash <a href=\"http://www.aaa.com/\">this coupon</a> <br > <a href="http://www.ggg.com/">Visit here</a> for details <br >";
How do i add the
我如何添加
target="_blank"
目标=“_blank”
that missing on the $descriptionvariable?
那个缺少$description变量？
So the result will becomes the following:
所以结果会变成下面这样：
$description = "Flash <a href=\"http://www.aaa.com/\" target="_blank">this coupon</a> <br > <a href="http://www.ggg.com/" target="_blank">Visit here</a> for details <br >";
I am looking for solution that the variable $description was recorded by user accidentally. But I need the system to find out and correct it by adding the target="blank" into the existing variable and update the record.
我正在寻找用户意外记录变量 $description 的解决方案。但是我需要系统通过将 target="blank" 添加到现有变量中并更新记录来找出并纠正它。
回答by eL-Prova
I have no idea what your exactly meaning. However, a suggestion to use ' within your HTML. And only " for the echo. So it will be:
我不知道你的确切意思是什么。但是，建议在 HTML 中使用 '。并且只有 " 用于回声。所以它将是：
$description = "Flash <a href='http://www.aaa.com/' target='_blank'>this coupon</a><br ><a href='http://www.ggg.com/' target='_blank'>Visit here</a> for details <br >";
For adding target you can use this:
要添加目标，您可以使用：
$string = preg_replace("/<a(.*?)>/", "<a target=\"_blank\">", $string);
Found on: preg_replace links in text with <a> with some exception
回答by kero
You already did it, but your code will produce errors since you didn't escape the "in the second link
您已经这样做了，但是您的代码会产生错误，因为您没有"在第二个链接中转义
$description = "Flash <a href=\"http://www.aaa.com/\" target=\"_blank\">this coupon</a> <br > <a href=\"http://www.ggg.com/\" target=\"_blank\">Visit here</a> for details <br >";
Alternatively you can use 'then you don't have to escape
或者你可以使用'然后你不必逃避
$description = 'Flash <a href="http://www.aaa.com/" target="_blank">this coupon</a> <br > <a href="http://www.ggg.com/" target="_blank">Visit here</a> for details <br >';
回答by Narek
$description = str_replace('<a href="','<a target="_blank" href="',$description);
回答by Nick Andriopoulos
If you note that properties of tags do not have a specific order, you can simply replace <a hrefwith <a target=\"_blank\" href
如果你注意到标签的属性没有特定的顺序，你可以简单地替换<a href为<a target=\"_blank\" href
