Is it necessary to loop through a JSON-decoded array to create a new array in PHP?

When decoding a JSON array in PHP, you may need to loop through the decoded array to create a new array with specific elements or perform some kind of transformation. This is necessary because the decoded JSON array is typically in a format that may not be directly usable for your desired purpose. By looping through the decoded array, you can extract the necessary data or manipulate it as needed to create a new array. 

// Decode the JSON array
$jsonArray = json_decode($jsonString, true);

// Initialize a new array
$newArray = [];

// Loop through the decoded array to create a new array
foreach ($jsonArray as $item) {
    // Perform any necessary operations on $item and add it to $newArray
    $newArray[] = $item['desired_key'];
}

// $newArray now contains the transformed data from the decoded JSON array

Keywords

PHP JSON array loop decoding

Related Questions