checking for duplicate in array

[aebstract]

I have an array/session set.

 

$_SESSION[cart]

 

It's in this format:

 

Array
(
    [0] => Array
        (
            [qty] => 1
            [cat] => EZ Street
            [file] => 844900751_iDZdR-M.jpg
        )

)

 

When I go to add another value to the array/session, I need to be able to look through and check to see if it's already set based on cat & file. If a record already exists, I just need to add +1 to the qty. Right now I got

 

	foreach($_SESSION[cart] AS $key => $value){
foreach($_SESSION[cart][$key] AS $key => $value){


echo "$key $value";

}}

 

This to just get me my values, but I'm kind of stuck trying to figure out how to check it, and then if it already exists add the +1 and kill the rest of the add script.

[ScotDiddle]

aebstract,

 

The following code should do the trick...

 

Scot L. Diddle, Richmond VA

 

<?php

Header("Cache-control: private, no-cache");
Header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
Header("Pragma: no-cache");


$arrayToCheck = Array(

				0 => Array (

					'qty' => 1,
					'cat' => 'EZ Street',
					'file' => '844900751_iDZdR-M.jpg'

					),

				1 => Array (

					'qty' => 1,
					'cat' => 'Hard Street',
					'file' => '844900751_iDZdR-hard.jpg'

					)

				);

$_POST['incomingArray'] = array(

						0 => Array (

						'qty' => 1,
						'cat' => 'EZ Street',
						'file' => '844900751_iDZdR-M.jpg'

						)

					);

$arrayOut = $arrayToCheck;

foreach ($arrayToCheck as $cartIDX => $cartItem) {

/**
 *
 *  $cartItem should look like this:
 *
 */

//		Array
//		(
//		    [qty] => 1
//		    [cat] => EZ Street
//		    [file] => 844900751_iDZdR-M.jpg
//		)
//

$cartCat = $cartItem['cat'];
$incomingCart = $_POST['incomingArray'][$cartIDX]['cat'];

if ($incomingCart != NULL) {

	if ($cartCat ==  $incomingCart) {
		$arrayOut[$cartIDX]['qty']++;
	}
	else {
		$arrayOut[] = $_POST['incomingArray'][$cartIDX];
	}

}


}

$arrayToCheck = $arrayOut;

$display = TRUE;

if ($display) {

echo "<pre> \n";
    	print_r($arrayToCheck);
    echo "</pre> \n";

}

?>

[ScotDiddle]

aebstract,

 

    Silly me.  Who just orders one of anything.  The re-posted code below handles whatever new qty the user requests.

 

<?php

Header("Cache-control: private, no-cache");
Header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
Header("Pragma: no-cache");


$arrayToCheck = Array(

				0 => Array (

					'qty' => 1,
					'cat' => 'EZ Street',
					'file' => '844900751_iDZdR-M.jpg'

					),

				1 => Array (

					'qty' => 1,
					'cat' => 'Hard Street',
					'file' => '844900751_iDZdR-hard.jpg'

					)

				);

$_POST['incomingArray'] = array(

						0 => Array (

						'qty' => 3, // Note the New Qty...
						'cat' => 'EZ Street',
						'file' => '844900751_iDZdR-M.jpg'

						)

					);

$arrayOut = $arrayToCheck;

foreach ($arrayToCheck as $cartIDX => $cartItem) {

/**
 *
 *  $cartItem should look like this:
 *
 */

//		Array
//		(
//		    [qty] => 1
//		    [cat] => EZ Street
//		    [file] => 844900751_iDZdR-M.jpg
//		)
//

$cartCat = $cartItem['cat'];
$incomingCart = $_POST['incomingArray'][$cartIDX]['cat'];
$incomingQty  = $_POST['incomingArray'][$cartIDX]['qty']; // Added

if ($incomingCart != NULL) {

	if ($cartCat ==  $incomingCart) {
		$arrayOut[$cartIDX]['qty'] += $incomingQty; // Changed from $arrayOut[$cartIDX]['qty']++
	}
	else {
		$arrayOut[] = $_POST['incomingArray'][$cartIDX];
	}

}


}

$arrayToCheck = $arrayOut;

$display = TRUE;

if ($display) {

echo "<pre> \n";
    	print_r($arrayToCheck);
    echo "</pre> \n";

}

?>