PHP

PHP Intro

What is a PHP File? A PHP file is a text file that contains PHP code and is saved with a .php file extension. It is a server-side script that is executed by a web server running PHP software. When a user requests a web page that contains PHP code, the web server processes the PHP …

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PHP Install

What Do I Need? In general, to work with PHP, you need: A web server: PHP is a server-side scripting language, which means that it runs on a web server rather than in a user’s web browser. You’ll need a web server, such as Apache or Nginx, to run your PHP scripts. PHP interpreter: PHP …

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PHP Syntax

Basic PHP Syntax The basic syntax of PHP is similar to that of other programming languages like C and Java, with statements ending in semicolons and blocks of code enclosed in curly braces. Here’s an example of a basic PHP script: <?php // This is a comment in PHP // Declare a variable and assign …

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PHP Comments

Comments in PHP In PHP, comments are used to add explanatory notes or annotations to the code. Comments are ignored by the PHP parser and are not executed as part of the program. PHP supports two types of comments: single-line comments and multi-line comments. Single-line comments start with // or # and continue until the …

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PHP Variables

Creating (Declaring) PHP Variables In PHP, a variable is a container that can store a value, such as a string, number, or array. To declare a variable in PHP, you use the dollar sign $ followed by the variable name. Here’s an example: $name = “John”; In this example, we’re declaring a variable called $name and setting …

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PHP echo or print

The PHP echo Statement In PHP, the echo statement is used to output one or more strings or variables to the web page or the console. It is a language construct and not a function, so it can be used without parentheses if you’re just outputting a single string. Here’s the basic syntax for using echo …

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PHP Data Types

PHP String In PHP, a string is a sequence of characters enclosed in quotes. You can use single quotes (‘ ‘) or double quotes (” “) to define a string. Here’s an example of a string in PHP: $name = “Alice”; In this case, $name is a string variable that contains the value “Alice”. You can …

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PHP Strings

PHP String Functions PHP provides a wide range of built-in string functions that make it easy to work with strings in your code. Here are some of the most commonly used string functions in PHP: strlen() : Returns the length of a string. strpos() : Searches for a substring within a string and returns the position of …

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PHP Numbers

PHP Floats In PHP, floats (or floating-point numbers) are numbers with a decimal point or an exponent. They are used to represent fractional or decimal values in PHP, such as 3.14 or 2.5e-3. Floats in PHP are represented by the float data type, which is a primitive type in the language. The range of values that …

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PHP Math

PHP pi() Function The pi() function returns value of the PI: echo(pi()); // returns value is 3.1415926535898 ?> PHP min() and max() Functions The min() and max() functions can be used to find the lowest or highest value in a list of arguments: <?php echo(min(0, 150, 30, 20, -8, -200));  // returns -200 echo(max(0, 150, …

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