Upload file in php with syntax and examples PHP allows you to upload files from a client's device to your server using the $_FILES superglobal array. File Upload Syntax: 1. $_FILES['file']['name']: File name 2. $_FILES['file']['type']: File type (MIME) 3. $_FILES['file']['tmp_name']: Temporary file path 4. $_FILES['file']['size']: File size (bytes) 5. $_FILES['file']['error']: Error code (0 = no...

Sessions in php with syntax and examples Sessions allow you to store and retrieve data across multiple requests, enabling you to maintain user-specific information and create personalized experiences. Session Syntax: 1. session_start(): Initializes a session. 2. $_SESSION['key'] = value: Sets a session variable. 3. $_SESSION['key']: Retrieves a session variable. 4. unset($_SESSION['key']): Deletes a session variable....

Include and Required in php with syntax and examples Include and require are used to insert the contents of one PHP file into another. This allows for reusable code, easier maintenance, and organization. Include: Syntax: include 'filename.php'; Example: // header.php echo "Header Content"; // index.php include 'header.php'; echo "Main Content"; Require: Syntax: require 'filename.php'; Example:...

Loops in php with syntax and examples Loops are used to execute a block of code repeatedly for a specified number of times or until a certain condition is met. PHP supports several types of loops: For Loop: Syntax: for (init; condition; increment) { code } Example: for ($i = 0; $i < 5; $i++)...

Time and Date in php with syntax and examples PHP provides various functions to work with time and date, enabling you to perform operations like formatting, validation, and manipulation. Time Functions: 1. time(): Returns the current Unix timestamp. Syntax: time() Example: echo time(); // outputs the current Unix timestamp 1. mktime(): Creates a Unix timestamp...

$get and $post variables in php with syntax and examples In PHP, $_GET and $_POST are superglobal variables used to access data sent to the server through HTTP requests. Syntax: - $_GET: $_GET['variable_name'] - $_POST: $_POST['variable_name'] Examples: 1. $_GET: Retrieves data from the URL query string. Example: // URL: (link unavailable)?name=John&age=30 echo $_GET['name']; // outputs...

Server variables in php with syntax and examples Server variables in PHP provide information about the server environment, request headers, and other relevant data. These variables are stored in the $_SERVER superglobal array. Syntax: $_SERVER['variable_name'] Examples: 1. $_SERVER['HTTP_HOST']: Returns the hostname of the server. Example: echo $_SERVER['HTTP_HOST']; // outputs "(link unavailable)" 1. $_SERVER['REQUEST_METHOD']: Returns the...

Arrays in php with syntax and examples Arrays are a fundamental data structure in PHP, allowing you to store and manipulate collections of values. Syntax: $array = array(value1, value2, ...); Examples: $fruits = array("apple", "banana", "orange"); $numbers = array(1, 2, 3, 4, 5); Array Types: 1. Indexed Arrays: Arrays with numerical keys. Example: $colors =...

Outputting Data in PHP PHP provides two primary ways to output data: echo and print. Echo: - Outputs one or more strings - Does not return a value - Can output multiple strings separated by commas Syntax: echo $string1, $string2, ...; Examples: echo "Hello, World!"; echo "Hello", " ", "World!"; Print: - Outputs a single...

Local and global variables in php with syntax and examples In PHP, variables are used to store and manipulate data. There are two types of variables: local and global. Local Variables: - Declared within a function or block - Only accessible within that function or block - Destroyed when the function or block ends Syntax:...