how can i apply associative array technique to a form in php?

Question

I am working a form where i have to adopt associative array technique. the user will select a product size and enter the corresponding stock. once post the corresponding stock will be associated to the corresponding size value. Here is the form:

   <form action="test1.php" method="post">
    <p>Choose a Size or more and enter its Stock</p>
    Size :<select name="articleSize[]" id="articleSize[]">
        <option value="">Select a size</option>
        <option value="xl">XL</option>
        <option value="32">32</option>
        <option value="unique">Unique</option>
        <option value="xxl">XXL</option>
    </select>
    Stock : <input type="text" name="articleStock[]" id="articleStock[]" size="8" id="stock" value="">

    <p>Choose a Size or more and enter its Stock (optional)</p>
    Size :<select name="articleSize[]" id="articleSize[]">
        <option value="">Select a size</option>
        <option value="xl">XL</option>
        <option value="32">32</option>
        <option value="unique">Unique</option>
        <option value="xxl">XXL</option>
    </select>
    Stock : <input type="text" name="articleStock[]" id="articleStock[]" size="8" id="stock" value="">
    <p>
    <input type="submit" name="submit" id="submit" value="submit">
    </p>
    </form>

I have tried myself based on what i know and here is my code:

if (isset($_POST['submit'])) {
$arrSize = $_POST['articleSize'];
$arrStock = $_POST['articleStock'];

foreach ($arrSize as $size_key => $sizeValue) {
    foreach ($arrStock as $stock_Key => $stockVal) {
        if ($size_key == $stock_Key) {
            $newArray[$sizeValue] = $stockVal;
        }
    }

 }
 if (count($newArray) >=1) { 
     foreach ($newArray as $key => $value) {
        echo "Size is ".$key. " and stock is ".$value;
     }
  }

}

My code is working as excepted but is't there better way to do it?

The result shoud be like.

$stock_size = array(the size=> its corresponding stock);

u_mulder · Accepted Answer · 2017-08-26 12:55:53Z

1

You can eliminate inner foreach like this:

foreach ($arrSize as $size_key => $sizeValue) {
    if (!empty($arrStock[$size_key])) {
        $newArray[$sizeValue] = $arrStock[$size_key];
    }
}

If there's a need to count 0 values too you can:

foreach ($arrSize as $size_key => $sizeValue) {
    if (!empty($arrStock[$size_key]) && (int)$arrStock[$size_key] >=0 ) {
        $newArray[$sizeValue] = $arrStock[$size_key];
    }
}

And if you're sure that all values have pairs:

foreach ($arrSize as $size_key => $sizeValue) {
    $newArray[$sizeValue] = $arrStock[$size_key];
}

which is the same as

$newArray = array_combine($arrSize, $arrStock);

Update with function:

function makePairs($arrSize, $arrStock)
{
    $newArray = [];

    foreach ($arrSize as $size_key => $sizeValue) {
        if (!empty($arrStock[$size_key])) {
            $newArray[$sizeValue] = $arrStock[$size_key];
        }
    }

    return $newArray;
}

// Call like
print_r(makePairs($_POST['articleSize'], $_POST['articleStock']));

edited Aug 26, 2017 at 12:55

answered Aug 26, 2017 at 10:44

u_mulder

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4 Comments

africa developeur Over a year ago

thanks for your advise...it working like i wanted...i did not want to return an array with empty values included..

africa developeur Over a year ago

how can i translate the above as a function ? because the return value as to be a function?

u_mulder Over a year ago

Please ask another question, I don't understand what it means translate as a function.

africa developeur Over a year ago

i was saying that how can i successfully take above code and make it as a function. so the function will return false if no value has been enter or return array if values has been entered.

B. Desai · Accepted Answer · 2017-08-26 10:46:10Z

0

You can use array_combine which will create key-value pair array

$arrSize = $_POST['articleSize'];
$arrStock = $_POST['articleStock'];

$stock_size = array_combine ( $arrSize ,$arrStock );

answered Aug 26, 2017 at 10:46

B. Desai

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