PHP Filters
PHP Filters In PHP, filters are a way to validate and sanitize user input data. PHP provides a number of built-in filters that can be used to ensure that user input is safe and conforms to a certain format. Here are some examples of how to use filters in PHP: Validating an email address: $email […]
PHP Sessions
PHP Sessions In PHP, a session is a way to store information on the server that can be accessed across multiple requests by the same user. Sessions are typically used to store user information, such as login credentials or shopping cart items, as the user navigates your website. Here’s an example of how to use […]
PHP Cookies
PHP Cookies In PHP, you can use cookies to store small amounts of data on the user’s computer. Cookies are typically used to store user preferences, session IDs, or other data that needs to persist across multiple requests. Here’s an example of how to set and retrieve cookies in PHP: Setting a cookie: setcookie(“username”, “JohnDoe”, […]
PHP File Handling
PHP File Handling In PHP, you can perform various file handling operations using built-in functions. Some common file handling operations include creating, opening, reading, writing, and closing files. Here’s a brief overview of some of the most commonly used PHP file handling functions: fopen: This function is used to open a file in a specific […]
PHP Include Files
PHP Include Files In PHP, you can include external files within your code using the include and require statements. These statements allow you to reuse code across multiple pages, making your code more modular and easier to maintain. The include and require statements are used to include a file in your PHP script. The difference […]
PHP Date and Time
PHP Date and Time PHP has many built-in functions to work with dates and times. Here are some commonly used functions: date() – This function returns the current date and time. You can format the date and time using parameters. For example echo date(“Y/m/d”); // Outputs: 2023/03/24 echo date(“h:i:s A”); // Outputs: 02:34:45 PM strtotime() […]
PHP Forms
PHP Forms In PHP, forms are a common way to collect data from users and process it on the server. Here are the basic steps involved in processing a form in PHP: Create an HTML form with input fields for the data you want to collect. Set the form’s action attribute to the PHP script […]
PHP Math
Here are some examples of using the most commonly used math functions in PHP: abs(): Returns the absolute value of a number. . $number = -10; $absValue = abs($number); // returns 10 sqrt(): Returns the square root of a number. $number = 25; $sqrtValue = sqrt($number); // returns 5 pow(): Returns the result of raising […]
PHP String
PHP String In PHP, a string is a sequence of characters, either enclosed in single quotes (‘) or double quotes (“). PHP supports many string functions that allow developers to manipulate strings in various ways, such as concatenation, trimming, replacing, and searching. Here are some examples of creating and manipulating strings in PHP: $string1 = […]
PHP Global Variables
PHP Global Variables PHP superglobal variables are special variables that are built into the language and are always available, regardless of the scope of the code. These variables are called “superglobal” because they can be accessed from any part of the script, including functions, classes, and methods. Here are some of the most commonly used […]