PHP MySQL Fundamentals from Scratch with Examples & Projects

May be you already know what php stands for? or what is php abbreviation. Besides, full form of PHP (Old "Personal Home Page" & new "PHP: Hypertext Preprocessor"), let's understand what is PHP?

Rasmus Lerdorf developed PHP in 1994. Let's Take a brief overview of history of PHP in this lecture.

We already wrote our first php syntax or php code. Let's explore it in more details.

Not sure, how PHP works on a web server? Here is the explanation in this video.

Learn basic PHP configuration by modifying php.ini file.

The echo and print functions in PHP, which are used to output the text.

Is it possible to include HTML tags in PHP? Yes! It it, Let's learn how.

In this video we will learn how whitespace is treated in PHP.

Variables are one of the most important elements in PHP. Let's learn about PHP variables.

The constants are used for storing data or value. Let's practically learn about PHP constants.

Though, we think single quotes and double quotes are similar. There is difference how they work. Understand the difference between single quotes and double quotes in PHP.

Learn if PHP is case-sensitive or case-insensitive.

The main purpose of comment is to read more information about a program. Let's learn how to add comments in PHP.

A data type is the classification of data. Similar to other programming languages, PHP supports different data types. Let's learn about PHP data types.

A PHP Boolean data type can have only either true or false value.

PHP Integer data types are whole numbers or numbers without decimal point.

Float or Double in PHP is the number with decimal point.

A PHP string data type can contain letters, numbers or special characters.

PHP array can store other data types like string, integer float etc. in a single variable.

The PHP object is an instance of a class.

The PHP resource holds a reference to an external resource.

NULL in PHP represents a variable with no value.

An operator is something that takes one or more values (or operands) and yields another value. Let's learn about different PHP operators one by one.

Arithmetic operators in PHP are used to perform arithmetical operations like, addition, subtraction, multiplication, division etc.

The PHP assignment operator is used to assign a value to a variable.

PHP Comparison operators are used to compare the two values.

Errors are the part of PHP development process. We can ignore these errors temporarily using error control operators in PHP.

The increment & decrement operators in PHP increase or decrease the variable value by 1.

Logical operators in PHP are mainly used to combine conditional statements.

In this lecture we will learn about string operators in PHP.

The PHP array operators are used to compare array values.

A conditional statement in PHP is also know as conditional expressions or conditional constructs or conditional processing.

The if statement in PHP evaluates a single condition to either true or false.

If the condition is not true, in such case else statement is executed.

We can evaluate multiple conditions in PHP by using if elseif else statement.

Similar to if elseif else statement we can evaluate multiple conditions using PHP switch statements.

The PHP Loops are used to execute a block of code to a given number of times.

The PHP while statement executes a block of code as long as the given condition is true.

Similar to while statement, the do while statement in PHP executes a block of code as long as the given condition is true.

Let's understand the difference between while and do while in PHP.

A PHP for loop statement is also used to execute the block of codes for the given number of times.

The PHP foreach statement only work on arrays & objects.

We can break the current loop by using PHP break statement.

The PHP continue statement skips the current iteration and starts the loop from the beginning of next iteration.

An array in PHP is one of the data type which can hold multiple values in a single variable.

The indexed arrays are also know as numeric arrays and it stores each element or value with a numeric index.

A PHP associative array stores each element or value with a string index.

The array containing one or more arrays are called multidimensional arrays in PHP.

Let's learn some useful array functions in PHP.

The functions in PHP are pre-built programs which execute the program code and output result with or without accepting parameters.

PHP string functions are mainly used to manipulate string values.

PHP Math functions are used to manipulate integer or float values.

Let's explore different PHP array functions.

Let's learn how we can create our own functions that is user defined functions in PHP.

Create and use your first PHP user defined function.

Understand practically functions with arguments in PHP.

Functions with default arguments in PHP are used to set a default value to be used inside a function.

Get the function output result by using the functions that return the value in PHP.

A variable scope means, which part of PHP program can access or use the given variable. Understand what is the scope of constant & variable in PHP.

There are built-in variables, which are known as PHP Superglobals or PHP Global variables.

The PHP GLOBALS global variables references all variables available in global scope.

PHP SERVER global variable gives an information about the server & execution environment.

We can display more information about our environment variables using PHP ENV global variables.

The GET variable is an associative array of variables passed to the PHP page via the URL parameters. While POST variable is an associative array of variables passed to the PHP page via the HTTP POST method. FILES variable is also, an associative array of items uploaded to the current script via the HTTP POST method. Let's practically learn about these variables.