creating dropdown from php array

Question

I have array like this:

Array (
    [0] => Array(             
        [attribute_name] => Brand             
        [attribute_value] => Lee         
    )      
    [1] => Array(
         [attribute_name] => Brand  
         [attribute_value] => Levis         
    )      
    [2] => Array( 
        [attribute_name] => Brand    
        [attribute_value] => Raymond         
    )      
    [3] => Array( 
        [attribute_name] => Fabric 
        [attribute_value] => Cotton         
    )   
    [4] => Array(
        [attribute_name] => Fabric  
        [attribute_value] => Linen         
    )  
)

I want to create two drop down from this array one is for Brand which should have three options and another one is for fabric which should have two option.

I can do simply by checking attribute_name is brand or fabric, but this is not static there can be anything instead of brand and fabric.

I've tried so many things but not worked. Please help me in doing this. Thanks in advance.

thorsten.tee · Accepted Answer · 2015-03-23 07:35:05Z

2

$filteredArray = array();
foreach ($array as $key => $value) {
    if ($key === 'Brand' || $key === 'Fabric') {
        array_push($filteredArray, $value);
    }
}

$filteredArray now contains only Brand and Fabric.

answered Mar 23, 2015 at 7:35

thorsten.tee

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1 Comment

Clemen Swichmann Over a year ago

Please understand the question before giving the answer. $key will give me 0 1 2 3 4 not brand and fabric

Kevin · Accepted Answer · 2015-03-23 07:39:02Z

For this kind of structure, you must first create a grouping array out of your data first. So that in turn, they'll be easier to manage. First, group all of them by using a loop, using attribute name as keys, pushing the values. Will look something like this:

// grouping
$grouped = array();
foreach($array as $values) {
    $grouped[$values['attribute_name']][] = $values['attribute_value'];
}

This loop would create such structure:

Array
(
    [Brand] => Array
        (
            [0] => Lee
            [1] => Levis
            [2] => Raymond
        )

    [Fabric] => Array
        (
            [0] => Cotton
            [1] => Linen
        )

)

After they are grouped. Then comes the presentation:

Use this as an idea:

<form method="POST">
<?php foreach($grouped as $label => $values): ?>
    <label><?php echo $label; ?></label>
    <select name="select_values[<?php echo $label; ?>]">
        <?php foreach($values as $value): ?>
        <option value="<?php echo $value; ?>"><?php echo $value; ?></option>
        <?php endforeach; ?>
    </select><br/><br/>
<?php endforeach; ?>
<br/><input type="submit" />
</form>

Then once you submit the form, just handle it like you normally would. Assign it so some variable.

if(!empty($_POST['select_values'])) {
    $selected = $_POST['select_values'];
    echo '<pre>', print_r($selected, 1), '</pre>';
}

This would look like this after selections have been made:

Array
(
    [Brand] => Lee
    [Fabric] => Cotton
)

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