Author: Saim Khalid

The feature of Named Arguments has been introduced in PHP with the version 8.0. It is an extension of the existing mechanism of passing positional arguments to a function while calling. By default, values of passed arguments are copied to the corresponding formal arguments at the same position. This feature of named arguments in PHP…

Like most of the languages that support imperative programming, a function in PHP may have one or more arguments that have a default value. As a result, such a function may be called without passing any value to it. If there is no value meant to be passed, the function will take its default value…

PHP uses the “call by value” mechanism, by default, for passing arguments to a function. If the arguments within the function are changed, the changes do not reflect outside of the function. To allow a function to modify its arguments, the “call by reference” mechanism must be used. In PHP, a reference variable acts as…

By default, PHP uses the “call by value” mechanism for passing arguments to a function. When a function is called, the values of actual arguments are copied to the formal arguments of the function’s definition. During the execution of the function body, if there is any change in the value of any of the formal arguments,…

Function Parameters in PHP A function in PHP may be defined to accept one or more parameters. Function parameters are a comma-separated list of expressions inside the parenthesis in front of the function name while defining a function. A parameter may be of any scalar type (number, string or Boolean), an array, an object, or…

Like most of the programming languages, a function in PHP is a block of organized, reusable code that is used to perform a single, related action. Functions provide better modularity for your application and a high degree of code reuse. PHP supports a structured programming approach by arranging the processing logic by defining blocks of…

In PHP, an array is a collection of elements that can have several values under a single name. Normally, arrays in PHP are mutable, which means you can add, remove or change elements after they are generated. Constant arrays, on the other hand, are useful when you want an array with values that never change…

PHP Array Functions allow you to interact with and manipulate arrays in various ways. PHP arrays are essential for storing, managing, and operating on sets of variables. PHP supports simple and multi-dimensional arrays and can be either user created or created by another function. You can use these functions to modify, sort, add, remove or search…

A multidimensional array is an array of arrays. In a PHP array, each element can be another array. If the array consists of values or key-value pairs with values being of singular scalar types, it is a one-dimensional array. If each element in an array is an array of one or more scalar values, it…

If each element in a PHP array is a key-value pair, such an array is called an associative array. In this type of array, each value is identified by its associated key and not an index. Associative arrays are used to implement data structures such as dictionary, maps, trees, etc. In PHP, the “=>” symbol is…