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How to update key value in an associative array PHP

Update key value in array PHP This article focuses on how to update key value in array PHP. Though the article includes three approaches, the second approach is the most efficient. Introduction PHP associative arrays are basically hash maps as they include key and value pairs. The keys are unique but mutable. Thus, we can update key value in array PHP, and that’s exactly what this article will focus on. Let’s begin. #1 - Update key value in array PHP using a loop The most obvious approach is using a loop. PHP foreach loop is convenient because it gives us easy access to key and value pairs. The following example will use a foreach loop to change key value in array PHP. <?php $students_score = [ "Alison" => 10, "Liam" => 9, "Jenny" => 8, "Jamie" => 7, "Ron" => 6 ]; function changeName($students_score, $oldName, $newName) { foreach($students_score as $student=>$score)…

Shuffle a PHP array while keeping same keys The shuffle function shuffle a PHP array but does not preserve the key. This article finds a workaround for this problem. Introduction We have already seen a couple of articles about how to shuffle an array PHP. These articles feature the PHP shuffle function. This function is pretty helpful and straightforward in shuffling an array. However, it doesn’t preserve the keys. Now, this may not be desirable behavior. The image above is an example of how the shuffle function resets the keys. Without these keys, the values are difficult to interpret. For instance, the key gives context about the “8.8”, implying the “IMBDb rating.” So, losing the keys loses the context of the elements in some scenarios.So this article explores how to shuffle a PHP array while keeping the same keys. Shuffle a PHP array while keeping same keys So, we need…

Using PHP array_values in a multidimensional array The array_values function retrieves the values from an associative array in PHP. It takes an array as an argument and returns an array including the values. The usage is straightforward for a linear associative array. However, things get complicated when PHP multidimensional array factors in. A multidimensional array can include numbers and levels of nested arrays, and a hard-coded approach does not go well with complexities. That’s why we seek a more generalized algorithm to use PHP array_values in a multidimensional array, and that’s precisely what this array intends to show you. So, before we come to the main course, let’s quickly review the PHP array_values function. PHP array_values - A review Here’s the function signature of the array_values. array_values(array $array): array The function receives an array and returns the retrieved values in an array. An example is as follows. PHP array_values Code…

PHP array_keys and PHP array_values are two important functions. The array_keys function returns the keys from the input array, and the array_values return the values. The array_keys take some additional parameters for returning keys corresponding to a value that matches the search_value argument. Both of these functions return an array. So, this article reviews these functions and helps the readers understand the difference between array_keys and array_values. To have heads on, here are the articles explaining the PHP arrays_keys and PHP array_values in depth. PHP array_keys: how to use in PHP with examples PHP array_values: how to use in PHP with examples What is the difference between array_keys and array_values This section reviews the array_keys PHP and the array_values PHP and includes examples to clarify the difference between array_keys and array_values. what is the array_keys function Here’s an overview of the array_keys in PHP. Function Signature array_keys(array $array, mixed $search_value,…

Using Associative Array Keys in PHP array_map We have already seen the PHP array_map and some important related caveats. In a nutshell, the array_map function applies a callback to every element of the given arrays. One essential quirk of the function is that it passes the values of the given arrays to the callback function. There is no inherent way to pass a key as a parameter to the callback function. PHP array_map This article will show how to use associative array keys in PHP array_map function. To get the most out of this article, we recommend reading our article about array_map PHP. PHP array_map: How to use it in PHP with examples. Multiple arrays usage - A review Let’s review the array_map function when it gets more than one array as an argument. This review is crucial because we will use two arrays to use associative keys in the…

Tag: array_keys

How to update key value in an associative array PHP

How to shuffle a PHP array while keeping the same keys

array_values in PHP Multidimensional Array | 3 Code Examples

Using array_keys vs array_values: 5 PHP Code Examples (2023)

Use Associative Array Keys in array_map: 3 PHP Code Examples