用于提取mailto:地址的正则表达式 [英] Regexp for extracting a mailto: address

问题描述

我想要一个reg exp，它可以接受一个字符串块，并找到与以下格式匹配的字符串:

I'd like a reg exp which can take a block of string, and find the strings matching the format:

<a href="mailto:[e-mail]">....</a>

对于所有与此格式匹配的字符串，它将提取出mailto:之后找到的电子邮件地址.有什么想法吗?

And for all strings which match this format, it will extract out the email address found after the mailto:. Any thoughts?

这是内部应用程序所需的，而不是垃圾邮件发送者的目的！

This is needed for an internal app and not for any spammer purposes!

推荐答案

如果您要匹配来自的整个内容:

If you want to match the whole thing from :

$r = '`\<a([^>]+)href\=\"mailto\:([^">]+)\"([^>]*)\>(.*?)\<\/a\>`ism';
preg_match_all($r,$html, $matches, PREG_SET_ORDER);

要加快和缩短它:

$r = '`\<a([^>]+)href\=\"mailto\:([^">]+)\"([^>]*)\>`ism';
preg_match_all($r,$html, $matches, PREG_SET_ORDER);

第二个匹配组将是它的任何电子邮件.

The 2nd matching group will be whatever email it is.

示例:

$html ='<div><a href="mailto:[e-mail]">test</a></div>';

$r = '`\<a([^>]+)href\=\"mailto\:([^">]+)\"([^>]*)\>(.*?)\<\/a\>`ism';
preg_match_all($r,$html, $matches, PREG_SET_ORDER);
var_dump($matches);

输出:

array(1) {
  [0]=>
  array(5) {
    [0]=>
    string(39) "test"
    [1]=>
    string(1) " "
    [2]=>
    string(13) "[e-mail]"
    [3]=>
    string(0) ""
    [4]=>
    string(4) "test"
  }
}

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