Parse e-mail addresses with PHP?

问题:

Similar to this question, how could I parse e-mail addresses which are in this format,

"Bob Smith" <[e-mail]>, [e-mail], "John Doe"<[e-mail]>

And get the a result like this:

array(
    '[e-mail]'=>'Bob Smith'
    '[e-mail]'=>''
    '[e-mail]'=>'John Doe'
);

回答1:

Well, you could use mailparse_rfc822_parse_addresses(), which does exactly that. It's a PECL extension, so it might be easier to use Mail_RFC822::parseAddressList() as mentioned in the comments.

回答2:

This should work with just about anything:

$str = '"Bob Smith" <[e-mail]>, [e-mail], "John Doe"<[e-mail]>, Billy Doe<[e-mail]>';
$emails = array();

if(preg_match_all('/\s*"?([^><,"]+)"?\s*((?:<[^><,]+>)?)\s*/', $str, $matches, PREG_SET_ORDER) > 0)
{
    foreach($matches as $m)
    {
        if(! empty($m[2]))
        {
            $emails[trim($m[2], '<>')] = $m[1];
        }
        else
        {
            $emails[$m[1]] = '';
        }
    }
}

print_r($emails);

Result:

Array
(
    [[e-mail]] => Bob Smith
    [[e-mail]] => 
    [[e-mail]] => John Doe
    [[e-mail]] => Billy Doe
)

回答3:

This is a fully working piece of code below that even validates whether the email is correct or not ;)

<?php
$mails = '"Bob Smith" <[e-mail]>, [e-mail], "John Doe"<[e-mail]>';

$records = explode(",",$mails);

foreach($records as $r){
  preg_match("#\"([\w\s]+)\"#",$r,$matches_1);
  $name = $matches_1[1];


  preg_match("/[^0-9<][A-z0-9_]+([.][A-z0-9_]+)*[@][A-z0-9_]+([.][A-z0-9_]+)*[.][A-z]{2,4}/i",$r,$matches_2);
  $email = $matches_2[0];

  echo "Name: $name <br /> Email: $email <br />";
}

?>

回答4:

For a similar task I've used the following regex:

\s*(?:"([^"]*)"|([^,""<>]*))?\s*(?:(?:,|<|\s+|^)([^<@\s,]+@[^>@\s,]+)>?)\s*

https://regex101.com/r/Lpsjmr/1

PHP code:

$str = '"Bob Smith" <[e-mail]>, [e-mail], "John Doe"<[e-mail]>, Billy Doe<[e-mail]>';
if (preg_match_all('/\s*(?:"([^"]*)"|([^,""<>]*))?\s*(?:(?:,|<|\s+|^)([^<@\s,]+@[^>@\s,]+)>?)\s*/', $str, $matches, PREG_SET_ORDER) > 0) {
    $matches = array_map(function($x) { return [$x[1] . $x[2], $x[3]]; }, $matches);
    print_r($matches);
}

回答5:

1. Explode the string by comma
2. If valid email then store it, if NO
   1. rtrim the '>' character
   2. explode by '<'
   3. trim the string for ('"', and ' ')