PHP：检查字符串是否是数组的一部分

Question

I'm working on my little ticketing-system based on PHP.

Now I would like to exclude senders from being processed.

This is a possible list of excluded senders:

Array ( 
"[e-mail]",
"example.org",
"[e-mail]"
)

Okay - now I would like to check if the sender of an mail matches one of these:

$sender = "[e-mail]";

I think this is quite easy, I think I could solve this with in_array().

But what about

$sender = "[e-mail]";

example.org is defined in the array, but not [e-mail] - but [e-mail] should also excluded, because example.org is in the forbidden-senders-list.

How could I solve this?

Answer 1

Maybe you are looking for stripos function.

<?php

if (!disallowedEmail($sender)) { // Check if email is disallowed
    // Do your stuff
}

function disallowedEmail($email) {
    $disallowedEmails = array ( 
        "[e-mail]",
         "example.org",
         "[e-mail]"
     )
     foreach($disallowedEmails as $disallowed){
         if ( stripos($email, $disallowed) !== false)
             return true;
     }
     return false
}