note 71445 deleted from function.in-array by felipe

Note Submitter: RQuadling at GMail dot com 

----

In trying to emulate a case insensitive in_array(), I came up with ...

<?php
function in_array_caseless($m_Needle, array $a_Haystack, $b_Strict = False)
    {
    // Let's assume the function will fail.
    $b_Result = False;

    // Compare array vs array
    if (is_array($m_Needle))
        {
        // Iterate the Haystack to compare each Bale with the Needle.
        foreach($a_Haystack as $a_Bale)
            {
            // Determine the intersection between the Needle and the Bale.
            // Strictness indicates that the associative indexes must also match using case insensitivity.
            if (
                ($b_Strict && (array_uintersect_uassoc($m_Needle, $a_Bale, 'strcasecmp', 'strcasecmp') === $m_Needle)) ||
                (!$b_Strict && (array_uintersect($m_Needle, $a_Bale, 'strcasecmp') === $m_Needle))
                )
                {
                // It it matches then we have a winner.
                $b_Result = True;

                // Don't process anything else as 1 match is all that is required.
                break;
                }
            }
        }

    // Compare everything else but reverse the Haystack and the Needle.
    // This is done as the return from array_uinterect is based upon its Needle
    // and we need the Haystack's type to compare for strictness.
    else
        {
        $a_Result = array_values(array_uintersect($a_Haystack, array($m_Needle), 'strcasecmp'));
        $b_Result = !$b_Strict || (gettype($m_Needle) == gettype($a_Result[0]));
        }

    // Return the result
    return $b_Result;
    }
?>

For more info on this and other cool functions please see http://rquadling.php1h.com.