Question

I have an array of values I want to run php’s built-in email validation filter on. How do I run the filter against each array item, keeping the items that pass in the array?

Answer 1

Use php’s array_filter: http://php.net/manual/en/function.array-filter.php

Example (Updated to use FILTER_VALIDATE_EMAIL):

function validate_email($email_address)
{
   return filter_var($email_address, FILTER_VALIDATE_EMAIL);
}

$email_addresses = array("[e-mail]", "123");

$email_addresses = array_filter($email_addresses, "validate_email");

Now, $email_addresses will only contain [e-mail]