What is the best PHP mailing list software?

In my search for the best PHP mailing list software, I’ve come across some pretty bad ones, and some pretty good ones.
My criteria for a “good PHP mailing list” is the following:
-easy install
-easy integration
-double opt-in subscription
-sends mail even after browser window has closed (imagine waiting for your PHP script to finish sending an email to [...]

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Zend Form U.S. state drop down select menu

Question: Is there a Zend Form state drop down select menu already created that I could just add to my form?
Answer: No. At least I don’t think so. Zend_Form doesn’t have any Zend_Form_Element_StateSelect or anything like that. The only way I found was to pass in an array of states. Feel free to copy and [...]

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How to compare the differences between two arrays in PHP

Question: How do I write a function to compare the differences between two arrays?
Consider the following scenarios:
$alreadyInTheDatabase = array(’name’ => ‘Joe’, ‘address’ => ‘123 Fake St’);
$newFormValuesArray = array(’name’ => ‘Joe’, ‘address’ => ‘My address has changed’);

$alreadyInTheDatabase = array(’name’ => ‘Joe’, ‘address’ => ‘123 Fake St’);
$newFormValuesArray = array(’name’ => ‘Joe’); //a bad form has address missing [...]

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