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@ 2017-09-19T12:46:08Z

<?php

$arr = Array
(
    "category_id" => Array
        (
            0 => 1,
            1 => 4,
        ),

    "pay_type_id" => Array
        (
            0 => 2,
            1 => 5,
        ),

    "frequency_id" => Array
        (
            0 => 3,
            1 => 6,
        ),

);
$i=0;
foreach($arr as $key => $value)
{
   foreach ($value as $k => $v) {
            $postData[$k][$key] = $v;
        }
        
}
print_r($postData);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)

preferences:dark modelive previewkey bindings

23.48 ms | 404 KiB | 5 Q