класс — Создание кодов SKU с использованием переполнения стека

Вот что-то ОЧЕНЬ БЫСТРО и ОЧЕНЬ ГРЯЗНО, я просто собрал это вместе, чтобы дать вам руку помощи и кое-что для начала … так что, пожалуйста, не «ах, это комментарии к мусорному коду»;)

<?php

class SkuGenerator2000
{
public function generate($productId, array $variants, array $disallow)
{
// First lets get all of the different permutations = cartesian product
$permutations = $this->permutate($variants);

// Now lets get rid of the pesky combinations we don't want
$filtered     = $this->squelch($permutations, $disallow);

// Finally we can generate some SKU codes using the $productId as the prefix
// this assumes you want to reuse this code for different products
$skus         = $this->skuify($productId, $filtered);

return $skus;
}

public function permutate(array $variants)
{
// filter out empty values
// This is the cartesian product code
$input  = array_filter($variants);
$result = array(array());
foreach ($input as $key => $values) {
$append = array();
foreach($result as $product) {
foreach($values as $item) {
$product[$key] = $item;
$append[] = $product;
}
}
$result = $append;
}

return $result;
}

public function squelch(array $permutations, array $rules)
{
// We need to loop over the differnt permutations we have generated
foreach ($permutations as $per => $values) {
$valid = true;
$test  = array();
// Using the values, we build up a comparison array to use against the rules
foreach ($values as $id => $val) {
// Add the KEY from the value to the test array, we're trying to make an
// array which is the same as our rule
$test[$id] = $val[0];
}
// Now lets check all of our rules against our new test array
foreach ($rules as $rule) {
// We use array_diff to get an array of differences, then count this array
// if the count is zero, then there are no differences and our test matches
// the rule exactly, which means our permutation is invalid
if (count(array_diff($rule, $test)) <= 0) {
$valid = false;
}
}
// If we found it was an invalid permutation, we need to remove it from our data
if (!$valid) {
unset($permutations[$per]);
}
}
// return the permutations, with the bad combinations removed
return $permutations;
}

public function skuify($productId, array $variants)
{
// Lets create a new array to store our codes
$skus = array();

// For each of the permutations we generated
foreach ($variants as $variant) {
$ids = array();
// Get the ids (which are the first values) and add them to an array
foreach ($variant as $vals) {
$ids[] = $vals[0];
}

// Now we create our SKU code using the ids we got from our values. First lets use the
// product id as our prefix, implode will join all the values in our array together using
// the separator argument givem `-`. This creates our new SKU key, and we store the original
// variant as its value
$skus[$productId . '-' . implode('-', $ids)] = $variant;
// The bit above can be modified to generate the skues in a different way. It's a case of
// dumping out our variant data and trying to figure what you want to do with it.
}
// finall we return our skus
return $skus;
}
}

// Possible variants
$variants = array(
'brand' => array(
// the first value in our array is our SKU identifier, this will be used to create our unqiue SKU code
// the second value is a nice name, description if you will
array('AP', 'Apple'),
array('BA', 'Banana'),
array('PE', 'Pear'),
),
'color' => array(
array('RE', 'Red'),
array('GR', 'Green'),
array('BL', 'Blue'),
),
);

// Rules for combinations I dont want
$disallow = array(
array('brand' => 'AP', 'color' => 'GR'), // No green apples
array('brand' => 'AP', 'color' => 'RE'), // No red apples
array('brand' => 'PE', 'color' => 'BL'), // No blue pears
);

// Create new class
$skuGenerator = new SkuGenerator2000();

// Get me my skus!
$skus = $skuGenerator->generate('PHONE1', $variants, $disallow);

var_dump(array_keys($skus)); // Dump just the skus

// separate our data
echo "\n\n";

// Now dump the entire result!
var_dump($skus); // Dump it all

• генерировать = это занимает ваши инструкции
• permutate = декартова функция произведения, украденная по ссылке, которую я предоставил ранее
• squelch = удаляет перестановки на основе правил
• skuify = берет идентификатор продукта и генерирует коды SKU в качестве ключа, а вариант остается значением, поэтому его можно использовать для чего-то другого.