My PHP improvement functions - very useful!

functions.php

// Proper is_integer() check for dynamically typed PHP
// Yes, partly a joke.

function is_or_can_be_integer($value) {
    return is_integer($value) || strcmp((string)(int)$value, $value) === 0;
}

// TODO 
// Fix or wrap strpos() to return boolean.
// Fix all functions that use haystack needle or needle haystack params always in a different order.