PHP Variables
PHP Data Types
PHP Echo & Print
PHP Strings
PHP Numbers
PHP Constants
PHP Operators
PHP if...else...elseif Statements
Switch Statement
PHP Loops
PHP Arrays
Superglobals
PHP Coding Standards
PHP Form Handling
PHP Form Validation
PHP URLs Validation
PHP Form Required Validation
Complete Form Example
PHP File Functions Open/Read
PHP File Create/Write
PHP File Upload
PHP Cookies Handling
PHP Session Handling
PHP filter_var() Function
PHP Validation Filters
PHP Sanitization Filters
Using Filters
Filters Advanced
JSON
PHP Date and Time
MySQL Database
MySQL Connect
MySQL Commands-Creating a Table
MySQL Commands-Inserting The data
MySQL Commands-Prepared Statement
MySQL Commands-Selecting The Data
MySQL Commands-Where and Order By
MySQL Commands-Deleting And Updating The Data
PHP-OOP Introduction
PHP-Classes/Objects
PHP-Constructor/Destructor
PHP-Access Modifiers
PHP-Inheritance
PHP-Inheritance and Protected Access Modifier
PHP-Overriding Inherited Methods
PHP-Final keyword
PHP-Abstract Classes
PHP-Constants
PHP-Traits
PHP-Static Methods and Properties
Introduction to Functions
Defining A function
Returning Values From A Function
Dynamic Function Calls
Variable Scope
Understanding Arguments Or Parameters
Testing For A Function Existence
Returning Multiple Values From A Function
Making practical Use By Building Code Libraries For Code Re-usability
Using Include() And Require()
Building code libraries helps to speed up the code reusability process in PHP. You can make practical use of code reusability using code libraries. The code library is basically a separate file where all the function declarations or definitions are stored. The block of code that you need to reuse multiple times in your php script and when you decide all the functions to be built, you can build them in a separate file.
It will help you in easy modification as all your functions will be in one file and any changes required in functions need to be changed only in that file. The code reusability becomes easier and faster by building code libraries.
Many developers will be working on the same project, and one developer might not be aware of the function is created, or the modification is done or not but with the help of code libraries in php, consistency is maintained for the developers.
When you maintain reusable codes, the size and complexity of your codebase php file reduce, and it becomes very useful to reuse the block of code required again and again.
In later years, if you decide a function to be replaced then with the code library, it is very easy to search that function and change it rather than checking all the php files and modifying the code.
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Study Material
Quiz