从符合少数条件的给定电子邮件列表中提取某些电子邮件

Question

This question was asked in a recent job interview I gave and I was unable to answer it. Here is the question:

From a given email list ([e-mail], [e-mail], [e-mail], answers@no email.com, [e-mail], [e-mail]) extract only those emails ending with (@noemail.com, @no-email.com, and @no email.com).

I searched and tried to run the code but it didn't ran.

<?php

  $email_list = ([e-mail], [e-mail], [e-mail], answers@no email.com, [e-mail], [e-mail]);

  $pattern = ('@noemail.com', '@no-email.com', '@no email.com' );

  echo preg_match($pattern, $email_list);

?>

Answer 1

<?php

$email_list = array("[e-mail]", "[e-mail]", "[e-mail]", "answers@no email.com", "[e-mail]", "[e-mail]");
$matchlist = array("@noemail.com", "@no-email.com", "@no email.com");

function str_contains($haystack, $needle) {
    return (strpos($haystack, $needle) !== false);
}

foreach ($email_list as $email) {
    foreach($matchlist as $match) {
        if (str_contains($email, $match)) {
            echo $email . "<br>";
            break;
        }
    }
}

Not the perfect way, but works.