preg_replace掩盖电话号码的一部分 [英] preg_replace to mask parts of a phone number

问题描述

好吧，在重新阅读我以前的帖子以寻求帮助时，我发现我并没有明确说明我正在尝试做什么，也没有指出原因.我有一个我正在忙于开发的网站，它可能会显示人们留下电话号码的消息(即使这很愚蠢)，我需要负责并确保在这种情况下号码被屏蔽.首先，我需要搜索存储在变量 $messagetext 中的消息文本，然后我需要使用 preg_replace() 函数来屏蔽部分数字，因此不清楚数字是什么，所以如果有人要留言和他们的号码是"07921234567"，它将在邮件中显示为"07 ** 12 * 45 **".怎么办呢?我只想找出要用于搜索可能以+44或07开头的整数(英国号码)的函数，以及preg_replace()函数中的正则表达式是什么:

Ok so after having re-read over my previous post asking for help on this one I found I wasn't making it exactly clear what I was trying to do nor was I pointing out why. I have a site that I'm busy developing which may possibly display messages where people have left their phone numbers (even though this is stupid) and I need to be responsible and make sure should this be the case the numbers are masked. Firstly I need to search through the message text which is stored in a variable $messagetext then I need to use the preg_replace() function to mask parts of the number so its not clear what the number is so if someone were to leave a message and their number was "07921234567" it would appear on the message as "07**12*45**". How would this be done ? All I would like is to find out what function I'd use to search for the entire number (United Kingdom number) which may start +44 or 07 and what REGEX in the preg_replace() function as all i had was:

$extractednum = preg_replace( "/[0-9]/","*",$extractednum);
echo ($extractednum);

所有这些操作就是替换整个数字.我不想这样做的原因是，我还有一个正在处理社交网络隐私的网站，并且需要屏蔽为示例获取的部分电话号码.

All this does is replace the entire number. The reason why I don't wanna do this is I also have another site I'm working on to do with social networking privacy and I need to mask parts of the telephone numbers I retrieve for my example.

希望这更加清楚，如果有人可以帮助我提供一些很棒的代码！

Hopefully this is more clear and if someone could help me out with some code that would be great!

任何事情都值得赞赏！

推荐答案

我认为您要查找的正则表达式是这样的:

I think the regex you are looking for is this:

(00447|\+?447|07)([0-9]{9})

要屏蔽电话号码，您需要使用 preg_replace_callback() ，像这样:

To mask the phone numbers, you'll need a custom callback with preg_replace_callback(), like this:

$extractednum = preg_replace_callback( "/(00447|\+?447|07)([0-9]{9})/", function( $matches) {
    // This will return the number unmodified
    // return $matches[1] . $matches[2]; 
    // Instead, set whichever characters you want to be "*" like this:
    $matches[2][0] = $matches[2][1] = $matches[2][4] = $matches[2][7] = $matches[2][8] = "*";
    return $matches[1] . $matches[2]; 
} , $extractednum);

您可以在演示中看到它的运行.例如，输入 07921234567 会产生 07 ** 12 * 45 ** 作为输出.

You can see it working in the demo. For example, an input of 07921234567 yields 07**12*45** as output.

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