PHP create dynamic array in a multidimensional array

Question

I want to dynamic create an array based on a number inside a multidimensional array

here is the code

$meta_box = array(  
\'id\' => \'my-meta-box\',
         


        

Answer 1

Here's a way to add each 'fields' sub array as a new array into the larger array

$meta_box = array(  
'id' => 'my-meta-box',
'title' => 'Custom Input Fields',
'page' => 'page',
'context' => 'normal',
'priority' => 'high');

$fields = array();

$numberOfArrays = 2;

for($i = 1; $i <= $numberOfArrays; $i++){
    $fields[$i] = array (
                  array( //this array must be created dynamic 
                      'name' => 'Textarea',
                      'desc' => 'Enter big text here',
                      'id' => 'textarea' . $i, //id is textarea + number
                      'type' => 'textarea',
                      'std' => 'Default value'
                  )
            );
}

$meta_box['fields'] = $fields;

echo '
';
print_r($meta_box);
echo '
';

You'll get an output like this in your browser:

Array
(
    [id] => my-meta-box
    [title] => Custom Input Fields
    [page] => page
    [context] => normal
    [priority] => high
    [fields] => Array
        (
            [1] => Array
                (
                            [name] => Textarea
                            [desc] => Enter big text here
                            [id] => textarea1
                            [type] => textarea
                            [std] => Default value
                )
        [2] => Array
                (
                            [name] => Textarea
                            [desc] => Enter big text here
                            [id] => textarea2
                            [type] => textarea
                            [std] => Default value
                )
        )
)

Demo