Tag: shuffle

How to shuffle a PHP array while keeping the same keys

shuffle a PHP array
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…

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How to shuffle a multidimensional array in PHP

shuffle a multidimensional array
Shuffle a multidimensional array The shuffle function does not shuffle a multidimensional array. It shuffles the arrays at the topmost level and ignores the nested arrays. The articles explore a workaround for this problem. Shuffle Multidimensional Array Code Snippet // We'll use a recursive function to shuffle // a multidimensional array. It'll continuously dig // deeper into the array to shuffle each element. function shuffle_recursive(&$arr) { shuffle($arr); foreach($arr as &$v) { if(gettype($v) == "array") { shuffle_recursive($v); } } } $sampleArray = ["a" => ["b", "c", "d"], 0 => [1, 2, 3]]; shuffle_recursive($sampleArray); echo $sampleArray; Introduction Arrays are frequently used data structures. It can store multiple values, usually of mixed types depending on implementation. There are loads of array functions for retrieving and manipulating array values. One cool feature is that shuffling or randomizing an array. But why shuffle an array? A use case for shuffling an array could be modeling…

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How to shuffle an array of objects in PHP

shuffle array in PHP
Shuffle array in PHP PHP shuffle function shuffle array in PHP. The article uses this function to build a minimalistic console-based game, “The Quiz Game”. Introduction PHP arrays are flexible in terms of the elements datatypes. Arrays can have mixed types, including objects. The element’s index denotes its position in an array, where the leftmost element has an index of zero. One cool thing is random shuffling in an array. Randomized shuffling is super important if you’re trying to develop a game of chance, for instance, Poker. This article includes an array of objects. These objects are instances of a class Quiz. The class represents a typical quiz question with multiple answers. This article demonstrates how to shuffle array in PHP and builds a console-based program that displays random quiz questions. So let’s start without further ado. The Quiz Class Here’s the “Quiz” class. The array will hold the instances…

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