Learning Path: Filtering Arrays

Store foreach Loop Value in Array: 4 PHP Code Examples (2023)

How to Store Loop Values in a PHP Array There are 3 steps to storing loop values in PHP arrays. You need to instantiate a PHP variable with an empty array. Then, you will run your requirements with a loop like foreach. Finally, you can check for any needed conditions and add a value to the newly instantiated array. Check out the remaining article for examples. Are you needing to store values from a loop in a new array? This article will break down some common scenarios that I have experienced throughout my programming career. Storing Foreach Loop Values In Array PHP Code Example <?php // Define an indexed array $numbers = [5, 4, 2, 6, 10]; // Define an empty array to store the resulting values $results = []; // Loop through the array using foreach loop // store any 2, 6, 10 values in the new array to…

read more

PHP array_filter: 15 Array Filter Code Examples + Load Tests

How to use the PHP array_filter function to filter PHP Arrays Code Example <?php $dogBreedsILove = ["chihuaha", "collie", "golden retriever", "terrier"]; // I need all of the retreivers in the list. $retrievers = array_filter($dogBreedsILove, function ($breed) { return stripos($breed, "retriever"); } print_r($dagBreedsILove); PHP Array Filter Learning Path This article is part of our large series on filtering arrays. Feel free to browse through the articles we have listed below and dig further into some unique scenarios. These articles will help you level up your PHP development skills How to filter PHP associative array How to use Doctrine ArrayCollection map and filter functions Array of objects in PHP | How to create, sort, filter, merge & search them Filter an array of objects by values in PHP How to filter arrays of objects by keys in PHP Filter multidimensional array by value in PHP PHP Arrays Array Filter Load Testing: array_filter…

read more

How to Filter PHP Associative Arrays with Code Examples in 2023

How to Filter PHP Associative Array Code Example You will want to use the array_filter function on a PHP associative array to filter correctly. Many times, your array may also be multi-dimensional. We recommend creating a unique array filter function using a recursive pattern. Here's a sample code snippet from the article. // Option 1: Using a array_filter function function filterStudentsBySemesterOne($students_data) { return array_filter($students_data, function($v) { return $v["Semester"] > 5; }); } // Option 2: Filter associative arrays using an iterative approach (not recommended) function filterStudentsBySemester($data, $semester) { // Do some logic to determine whether we can return true. $filtered_arr = []; foreach($data as $k => $v) { if( $v["Semester"] > $semester ) { $filtered_arr[$k] = $v; } } return $filtered_arr; } This code is an example of an iterative approach. There are other options as well. Check out the article to see more. Relevant Content - PHP Associative Arrays…

read more

Find value in a multidimensional PHP array | 2023 Code Examples

find value in multidimensional array PHP
Find a value in multidimensional PHP arrays code example function recursiveFunc($arr,$player_name = null) { foreach($arr as $key=>$value) { if($key == "Name") { $player_name = $value; } if(gettype($value) == "array") { //If array within array then recall the function. recursiveFunc($value,$player_name); } if($value == "Quarantine2k19") { echo "Player: ".$player_name." took part in the Quarantine2k19 tournament"; } } } //Call the function. recursiveFunc($players_arr); //OUTPUT //Player: Bond007 took part in the Quarantine2k19 tournament We have done articles related to array filtering by key and value. This article takes a step further and discovers various approaches to find value in multidimensional array PHP. A multidimensional array could be any level deeper, and that is often a challenge when we have to find a value that resides deep within an array. There are two approaches to go about this problem: Iterative and Recursive. The iterative approach uses nested loops to iterate over the levels of arrays…

read more

Filter Array of Objects by Value: 5 PHP Code Examples in 2023

filter array of objects by value in PHP
How to Filter PHP arrays Before we get to the more complicated scenario of filtering arrays of objects by value, let's show how to do a PHP array filter in general. This is pretty simple to do using the array_filter function. You pass in the original array as the first parameter and then a function as the second parameter. The array_filter function uses the passed function on each element in the array to determine whether it should get returned. Anything returned truthy (not null or false) will get pushed into the new filtered array. Check out the example below to quickly filter an array in PHP by value. PHP array_filter Code Example // Let's setup a scenario where we need to filter an array by values with cows. $sampleArray = [0 => "horse", 1 => "cow", 2 => "pig", 3 => "cow"]; $filteredArray = array_filter( $sampleArray, function($val){ return $val ===…

read more

Filter Array of Objects by Key: 5 PHP Code Examples (2023)

filter array of objects by key in PHP
Filter Array of Objects PHP Code Example The following code snippet is a quick way to filter array of objects by key using the array_filter function. We recommend using the method for most array filtering use cases. Feel free to use this snippet and then follow along for more explanation. <?php // Dummy data just to populate function. // I'm creating a json string as its an efficient way to create an array of objects. // You can ignore this part and replace $objectsArray with your array. $content = '[{"type": "cat", "name": "charles"}, {"type": "dog", "name": "sam"}}, {"type": "donkey": "name": "frank"}]'; $objectsArray = json_decode($content); //Array_filter to filter objects with cat as type // This is where the work is done. $filtered_arr = array_filter( $objectsArray, function($key){ return $key === 0; }, ARRAY_FILTER_USE_KEY); //Gets the filtered array. print_r($filtered_arr); /* OUTPUT Array ( [0] => stdClass ( [name] => charles [type] => cat…

read more