Array Management Archives

Remove Null Values from a PHP Array: 5 Code Examples (2023)

How to Remove Null Values from an Array in PHP Use the unset() & is_null() functions to remove null values from a PHP array. You can also use the type check operator "===" as an alternative to the is_null function. You can check for false or use the empty() function if you need to remove any empty value, including nulls. Removing Null Values from PHP Arrays Code Example <?php $array = array('hello', null, 'world', null); foreach ($array as $key => $value) { if ($value === null) { unset($array[$key]); } } print_r(array_Values($array)); // Output: Array ( [0] => hello [1] => world ) ?> Functions to Check for null & empty values in PHP Function/MethodDescriptionisset()Determines if a variable is set and is not null. Returns true if the variable exists and has a value other than null, and false otherwise.empty()Determines if a variable is considered empty. Returns true if the variable…

2 Initialize Empty Arrays Using PHP Code Examples in 2023

Initialize An Empty Array in PHP Code Example We can initialize an empty array using either the square brackets syntax or array(), as follows. $firstArray = []; $secondArray = array(); The article goes beyond the basics and includes a case study where we use an array to implement an in-memory cache. Curious to know how that works? Stay tuned to learn more. Relevant Content: PHP Arrays Arrays are fundamental data structures, no doubt why they form the basis for many other data structures like stacks and queues. Apparently, a fundamental data structure, arrays can be a super helpful component in competitive programming, complex algorithms, or an actual program. PHP arrays can be categorized as Indexed arrays with numeric keys. Associative arrays with named keys. Multidimensional arrays with sub-arrays. FuelingPHP has an in-depth article on the types of arrays in PHP. Scenario: Retrieving Notifications in a Social Media Application Consider a…

Create PHP Array of Objects: 5 Code Examples in 2023

How to Create an Array of Objects in PHP There are 2 steps to creating arrays of objects in PHP. You will want first to initialize an empty array. Once complete, you should pass that reference to any object creation function. Create your object and attach it as a new reference to your PHP array. Creating Array of Objects PHP Code Example //Initialize an array. $employees = array(); //Add objects $employees[0] = new Employee("Steve Hans", "111-222-333", "60,000"); $employees[1] = new Employee("Raymond Rize", "112-212-313", "80,000"); $employees[2] = new Employee("Sams Brian", "122-213-713", "70,000"); PHP is both a procedural & object-oriented programming language, and this article overviews the basics. Stay with us till the end to learn more. Relevant Content: Classes & Objects Array of Objects in PHP | Create, Sort, Filter, Merge, Search, Etc How to Sort Array of Objects by Property in PHP How to shuffle an array of objects in…