Data.php - Jun 17, 2022 · The term PHP is an acronym for PHP: Hypertext Preprocessor. PHP is a server-side scripting language designed specifically for web development. It is open-source which means it is free to download and use. It is very simple to learn and use. The files have the extension “.php”. Rasmus Lerdorf inspired the first version of PHP and ...

 
Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». . Freemanpercent27s ghetto blaster

Aug 1, 2023 · Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain, I tried it. ＋add a note Data types. PHP is loosely typed. It stores integers in a platform-dependent range, either as a 32, 64 or 128-bit signed integer equivalent to the C-language long type. Unsigned integers are converted to signed values in certain situations, which is different behaviour to many other programming languages.The CREATE DATABASE statement is used to create a new database in MySQL. Let's make a SQL query using the CREATE DATABASE statement, after that we will execute this SQL query through passing it to the PHP mysqli_query () function to finally create our database. The following example creates a database named demo. 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO.Aug 1, 2023 · <?php $tomorrow = mktime (0, 0, 0, date ("m") , date ("d")+ 1, date ("Y")); $lastmonth = mktime (0, 0, 0, date ("m")-1, date ("d"), date ("Y")); $nextyear = mktime (0, 0, 0, date ("m"), date ("d"), date ("Y")+ 1);?> Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. PHP Conditional Statements. Very often when you write code, you want to perform different actions for different conditions. You can use conditional statements in your code to do this. In PHP we have the following conditional statements: if statement - executes some code if one condition is true PHP Conditional Statements. Very often when you write code, you want to perform different actions for different conditions. You can use conditional statements in your code to do this. In PHP we have the following conditional statements: if statement - executes some code if one condition is true Nov 4, 2021 · Introduction. In PHP, as in all programming languages, data types are used to classify one particular type of data. This is important because the specific data type you use will determine what values you can assign to it and what you can do to it (including what operations you can perform on it). Dec 1, 2019 · Instead, the form data or request for the web page gets sent to a web server to be processed by the PHP scripts. The web server then sends the processed HTML back to you (which is where 'Hypertext Preprocessor' in the name comes from), and your web browser displays the results. About. phpMyAdmin is a free software tool written in PHP , intended to handle the administration of MySQL over the Web. phpMyAdmin supports a wide range of operations on MySQL and MariaDB. Frequently used operations (managing databases, tables, columns, relations, indexes, users, permissions, etc) can be performed via the user interface, while ... Feb 25, 2019 · Hey gang, in this PHP & MySQL tutorial I'll show you how to connect to our new database from the PHP code.-----🐱‍💻 🐱‍💻... W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Aug 1, 2023 · In this case, PHP is strictly compilant with the RFC 2397. Section 3 states that passes data should be either in base64 encoding or urlencoded. VALID USAGE: <?php $fp = fopen ('data:text/plain,'. urlencode ($data), 'rb'); // urlencoded data $fp = fopen ('data:text/plain;base64,'. base64_encode ($data), 'rb'); // base64 encoded data ?> Jun 2, 2022 · Click once on the bar that shows the current directory then copy the name of the directory, which should be in this format: C:\php-8.1.6. Click the bar once and copy the Directory name. In your windows bar, search for “Edit the systems environment property”. Click on the “environment variables” button, click on “Path”, and then ... Validate Form Data With PHP. The first thing we will do is to pass all variables through PHP's htmlspecialchars () function. When we use the htmlspecialchars () function; then if a user tries to submit the following in a text field: - this would not be executed, because it would be saved as HTML escaped code, like this: Steps in Detail: Open XAMPP and start running Apache, MySQL and FileZilla Now open your PHP file and write your PHP code to create database and a table in your database. PHP code to create a database: PHP <?php // Server name must be localhost $servername = "localhost"; // In my case, user name will be root $username = "root"; // Password is emptyW3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Nov 4, 2021 · Introduction. In PHP, as in all programming languages, data types are used to classify one particular type of data. This is important because the specific data type you use will determine what values you can assign to it and what you can do to it (including what operations you can perform on it). <?php $tomorrow = mktime (0, 0, 0, date ("m") , date ("d")+ 1, date ("Y")); $lastmonth = mktime (0, 0, 0, date ("m")-1, date ("d"), date ("Y")); $nextyear = mktime (0, 0, 0, date ("m"), date ("d"), date ("Y")+ 1);?>Nov 2, 2020 · Steps in Detail: Open XAMPP and start running Apache, MySQL and FileZilla Now open your PHP file and write your PHP code to create database and a table in your database. PHP code to create a database: PHP <?php // Server name must be localhost $servername = "localhost"; // In my case, user name will be root $username = "root"; // Password is empty Config File. CodeIgniter has a config file that lets you store your database connection values (username, password, database name, etc.). The config file is located at app/Config/Database.php. You can also set database connection values in the .env file. See below for more details. Aug 1, 2023 · Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain, I tried it. ＋add a note Example Get your own PHP Server. When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named "welcome.php". The form data is sent with the HTTP POST method. To display the submitted data you could simply echo all the variables. The "welcome.php" looks like this: PHP is a server-side scripting language, which is used to design the dynamic web applications with MySQL database. It handles dynamic content, database as well as session tracking for the website. You can create sessions in PHP. It can access cookies variable and also set cookies. It helps to encrypt the data and apply validation. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Apr 29, 2022 · Contribute to Docs. PHP supports the following primitive data types: bool: a value that’s either true or false. int: a whole number value. float: a numeric value with decimal. string: a series of characters. array: an ordered map of key/value pairs. object: an instance of a pre-defined class. callable: a reference to a PHP function. Aug 1, 2023 · Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain, I tried it. ＋add a note PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ». 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO.May 6, 2019 · 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO. Dec 2, 2021 · A Database table is created with the name ‘register‘ Step 4: Create another file named index.php. This page is a PHP form that is used to insert a user’s data to create a username and password. When data is inserted, an alert message “You Registered Successfully” is shown. Mar 10, 2018 · Oke kita selesai dengan persiapannya. Menghubungkan PHP dengan Database menggunakan MySQLi. Untuk membuat CRUD, tahap awal yang kita lakukan adalah membuat file koneksi nya dulu, baru kemudian kita menampilkan data dari database. jadi pada tutorial ini kita akan belajar sampai menampilkan data dari database dengan PHP dan MySQLi. pada tutorial selanjutnya baru kita akan melanjutkan dengan ... PHP Aug 01, 2023 Domantas G. & Ignas R. 7min Read How to Use PHP to Insert Data Into MySQL Database Managing data within a MySQL database is crucial for web applications and websites. While there are several methods available, one powerful approach is by using PHP to interact with the database.The CREATE DATABASE statement is used to create a new database in MySQL. Let's make a SQL query using the CREATE DATABASE statement, after that we will execute this SQL query through passing it to the PHP mysqli_query () function to finally create our database. The following example creates a database named demo. A session is started with the session_start () function. Session variables are set with the PHP global variable: $_SESSION. Now, let's create a new page called "demo_session1.php". In this page, we start a new PHP session and set some session variables: Data Structures. Introduction; Installing/Configuring. Requirements; Installation; Predefined Constants; Examples; Ds\Collection — The Collection interface. Ds\Collection::clear — Removes all values; Ds\Collection::copy — Returns a shallow copy of the collection; Ds\Collection::isEmpty — Returns whether the collection is emptyJun 2, 2022 · Click once on the bar that shows the current directory then copy the name of the directory, which should be in this format: C:\php-8.1.6. Click the bar once and copy the Directory name. In your windows bar, search for “Edit the systems environment property”. Click on the “environment variables” button, click on “Path”, and then ... Apr 18, 2023 · Create a MySQL Database Table With PHP . Your database still isn’t ready to store data; you need a table to put the data into. Like creating a new database, you need to connect to your server to do this, but you also need to include the name of your database as a variable. Without this, your SQL queries won’t point anywhere. The configuration for Laravel's database services is located in your application's config/database.php configuration file. In this file, you may define all of your database connections, as well as specify which connection should be used by default. Most of the configuration options within this file are driven by the values of your application's ... Definition and Usage. The array_values () function returns an array containing all the values of an array. Tip: The returned array will have numeric keys, starting at 0 and increase by 1. Create an Array in PHP. In PHP, the array () function is used to create an array: array (); In PHP, there are three types of arrays: Indexed arrays - Arrays with a numeric index. Associative arrays - Arrays with named keys. Multidimensional arrays - Arrays containing one or more arrays. Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». PHP Version: 4+ PHP Changelog: PHP 7.2: The headers parameter also accepts an array PHP 5.4: Added header injection protection for the headers parameter. PHP 4.3.0: (Windows only) All custom headers (like From, Cc, Bcc and Date) are supported, and are not case-sensitive. PHP 4.2.3: The parameter parameter is disabled in safe mode Jun 18, 2023 · Step 1 – Start Apache Web Server. Step 2 – Create PHP Project. Step 3 – Execute SQL query to Create Table. Step 4 – Create phpmyadmin MySQL Database Connection File. Step 5 – Create Fetch Data PHP File From Database. Step 6 – Create Html Table To Display Retrieve Data From MySQL DB. Step 7 – Open Browser And Test This Project. Jun 17, 2022 · The term PHP is an acronym for PHP: Hypertext Preprocessor. PHP is a server-side scripting language designed specifically for web development. It is open-source which means it is free to download and use. It is very simple to learn and use. The files have the extension “.php”. Rasmus Lerdorf inspired the first version of PHP and ... Nov 4, 2021 · Introduction. In PHP, as in all programming languages, data types are used to classify one particular type of data. This is important because the specific data type you use will determine what values you can assign to it and what you can do to it (including what operations you can perform on it). PHP 5 included new features such as improved support for object-oriented programming, the PHP Data Objects (PDO) extension (which defines a lightweight and consistent interface for accessing databases), and numerous performance enhancements. In 2008, PHP 5 became the only stable version under development. Jul 28, 2023 · There is a very simple couple of lines code to connect with the database. In the PHP language, we can make database connection in a below-mentioned way: 1. MySQL. This will work with the MySQL database only. This extension follows the old traditional way of communicating with a database. Now, every coming PHP version has deprecated this approach. May 6, 2019 · 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO. Mar 14, 2023 · Include two files database.php, filter-data.php & get-category.php; Create a form with the post method and create the select input field & submit button. Nov 1, 2022 · Just follow the below 3 steps and fetch and update data from MySQL database using PHP code: Connect to MySQL database. Fetch data from the database. Update data from database. 1. Connect to MySQL database. In this step, you will create a file name db.php and update the below code into your file. The below code is used to create a MySQL database ... Dec 30, 2020 · In this section, we'll quickly go through how you could convert the above PHP pagination example into AJAX-based pagination. We'll revise all the files and discuss the changes that we will need to make. Firstly, let's update the index.php file, as shown in the following snippet. 1. <!DOCTYPE html>. Validate Form Data With PHP. The first thing we will do is to pass all variables through PHP's htmlspecialchars () function. When we use the htmlspecialchars () function; then if a user tries to submit the following in a text field: - this would not be executed, because it would be saved as HTML escaped code, like this: May 27, 2021 · inc/config.php: holds the configuration information of our application. Mainly, it will hold the database credentials. inc/bootstrap.php: used to bootstrap our application by including the necessary files. Model/Database.php: the database access layer which will be used to interact with the underlying MySQL database. The configuration for Laravel's database services is located in your application's config/database.php configuration file. In this file, you may define all of your database connections, as well as specify which connection should be used by default. Most of the configuration options within this file are driven by the values of your application's ... W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Apr 29, 2022 · Contribute to Docs. PHP supports the following primitive data types: bool: a value that’s either true or false. int: a whole number value. float: a numeric value with decimal. string: a series of characters. array: an ordered map of key/value pairs. object: an instance of a pre-defined class. callable: a reference to a PHP function. PHP User Defined Functions. Besides the built-in PHP functions, it is possible to create your own functions. A function is a block of statements that can be used repeatedly in a program. A function will not execute automatically when a page loads. A function will be executed by a call to the function. Mar 14, 2023 · Include two files database.php, filter-data.php & get-category.php; Create a form with the post method and create the select input field & submit button. Mar 21, 2018 · The basic steps to create MySQL database using PHP are: Establish a connection to MySQL server from your PHP script as described in this article. If the connection is successful, write a SQL query to create a database and store it in a string variable. Execute the query. We have already learnt about establish a connection and creating variables ... PHP Conditional Statements. Very often when you write code, you want to perform different actions for different conditions. You can use conditional statements in your code to do this. In PHP we have the following conditional statements: if statement - executes some code if one condition is true Mar 15, 2013 · W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. The PHP $_REQUEST variable contains the contents of both $_GET, $_POST, and $_COOKIE. We will discuss $_COOKIE variable when we will explain about cookies. The PHP $_REQUEST variable can be used to get the result from form data sent with both the GET and POST methods. Try out following example by putting the source code in test.php script. Config File. CodeIgniter has a config file that lets you store your database connection values (username, password, database name, etc.). The config file is located at app/Config/Database.php. You can also set database connection values in the .env file. See below for more details. May 6, 2019 · 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. About. phpMyAdmin is a free software tool written in PHP , intended to handle the administration of MySQL over the Web. phpMyAdmin supports a wide range of operations on MySQL and MariaDB. Frequently used operations (managing databases, tables, columns, relations, indexes, users, permissions, etc) can be performed via the user interface, while ... The CREATE DATABASE statement is used to create a new database in MySQL. Let's make a SQL query using the CREATE DATABASE statement, after that we will execute this SQL query through passing it to the PHP mysqli_query () function to finally create our database. The following example creates a database named demo. PHP is a server-side scripting language, which is used to design the dynamic web applications with MySQL database. It handles dynamic content, database as well as session tracking for the website. You can create sessions in PHP. It can access cookies variable and also set cookies. It helps to encrypt the data and apply validation. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». Oct 8, 2021 · MySQL is an open-source relational database management system (RDBMS). It is the most popular database system used with PHP. MySQL is developed, distributed, and supported by Oracle Corporation. The data in a MySQL database are stored in tables which consists of columns and rows. MySQL is a database system that runs on a server. The PHP Date () Function The PHP date () function formats a timestamp to a more readable date and time. Syntax date ( format, timestamp ) A timestamp is a sequence of characters, denoting the date and/or time at which a certain event occurred. Get a Date Jul 28, 2023 · There is a very simple couple of lines code to connect with the database. In the PHP language, we can make database connection in a below-mentioned way: 1. MySQL. This will work with the MySQL database only. This extension follows the old traditional way of communicating with a database. Now, every coming PHP version has deprecated this approach. Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». The form above sends data to a file called "upload.php", which we will create next. Create The Upload File PHP Script The "upload.php" file contains the code for uploading a file: Mar 15, 2013 · W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. May 6, 2019 · 2 Ways to Connect to MySQL database using PHP. There are two popular ways to connect to a MySQL database using PHP: With PHP’s MySQLi Extension; With PHP Data Objects (PDO) The guide also includes explanations for the credentials used in the PHP scripts and potential errors you may come across using MySQLi and PDO. Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». The PHP Date () Function The PHP date () function formats a timestamp to a more readable date and time. Syntax date ( format, timestamp ) A timestamp is a sequence of characters, denoting the date and/or time at which a certain event occurred. Get a DateDec 1, 2019 · Instead, the form data or request for the web page gets sent to a web server to be processed by the PHP scripts. The web server then sends the processed HTML back to you (which is where 'Hypertext Preprocessor' in the name comes from), and your web browser displays the results. Technical Details. Return Value: Returns the value encoded in JSON in appropriate PHP type. If the JSON object cannot be decoded it returns NULL. PHP Version: 5.2+. PHP Changelog: PHP 7.3: Added JSON_THROWN_ON_ERROR option. PHP 7.2: Added JSON_INVALID_UTF8_IGNORE, and JSON_INVALID_UTF8_SUBSTITUTE options. Mar 15, 2013 · Definition and Usage. The date_format () function returns a date formatted according to the specified format. Note: This function does not use locales (all output is in English). Tip: Also look at the date () function, which formats a local date/time.

Mar 15, 2013 · Definition and Usage. The date_format () function returns a date formatted according to the specified format. Note: This function does not use locales (all output is in English). Tip: Also look at the date () function, which formats a local date/time. . Orr

data.php

MySQL is a database system used on the web. MySQL is a database system that runs on a server. MySQL is ideal for both small and large applications. MySQL is very fast, reliable, and easy to use. MySQL uses standard SQL. MySQL compiles on a number of platforms. MySQL is free to download and use. MySQL is developed, distributed, and supported by ... Nov 4, 2021 · Introduction. In PHP, as in all programming languages, data types are used to classify one particular type of data. This is important because the specific data type you use will determine what values you can assign to it and what you can do to it (including what operations you can perform on it). PHP 5 included new features such as improved support for object-oriented programming, the PHP Data Objects (PDO) extension (which defines a lightweight and consistent interface for accessing databases), and numerous performance enhancements. In 2008, PHP 5 became the only stable version under development. PHP user_data - 30 examples found.These are the top rated real world PHP examples of user_data extracted from open source projects. You can rate examples to help us improve the quality of examples. The PHP Date () Function The PHP date () function formats a timestamp to a more readable date and time. Syntax date ( format, timestamp ) A timestamp is a sequence of characters, denoting the date and/or time at which a certain event occurred. Get a DateNov 2, 2020 · Steps in Detail: Open XAMPP and start running Apache, MySQL and FileZilla Now open your PHP file and write your PHP code to create database and a table in your database. PHP code to create a database: PHP <?php // Server name must be localhost $servername = "localhost"; // In my case, user name will be root $username = "root"; // Password is empty PHP can create, open, read, write, delete, and close files on the server. PHP can collect form data. PHP can send and receive cookies. PHP can add, delete, modify data in your database. PHP can be used to control user-access. PHP can encrypt data. With PHP you are not limited to output HTML. You can output images or PDF files. Dec 30, 2020 · In this section, we'll quickly go through how you could convert the above PHP pagination example into AJAX-based pagination. We'll revise all the files and discuss the changes that we will need to make. Firstly, let's update the index.php file, as shown in the following snippet. 1. <!DOCTYPE html>. PHP supports the following data types: String Integer Float (floating point numbers - also called double) Boolean Array Object NULL Resource PHP String A string is a sequence of characters, like "Hello world!". A string can be any text inside quotes. You can use single or double quotes: Example Get your own PHP Server <?php $x = "Hello world!"; Jun 18, 2023 · Step 1 – Start Apache Web Server. Step 2 – Create PHP Project. Step 3 – Execute SQL query to Create Table. Step 4 – Create phpmyadmin MySQL Database Connection File. Step 5 – Create Fetch Data PHP File From Database. Step 6 – Create Html Table To Display Retrieve Data From MySQL DB. Step 7 – Open Browser And Test This Project. Decoding JSON data is as simple as encoding it. You can use the PHP json_decode () function to convert the JSON encoded string into appropriate PHP data type. The following example demonstrates how to decode or convert a JSON object to PHP object. Example. Run this code ». PHP echo and print Statements. echo and print are more or less the same. They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument ... Dec 30, 2020 · In this section, we'll quickly go through how you could convert the above PHP pagination example into AJAX-based pagination. We'll revise all the files and discuss the changes that we will need to make. Firstly, let's update the index.php file, as shown in the following snippet. 1. <!DOCTYPE html>. PHP echo and print Statements. echo and print are more or less the same. They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions. echo can take multiple parameters (although such usage is rare) while print can take one argument ... PHP is a server-side scripting language, which is used to design the dynamic web applications with MySQL database. It handles dynamic content, database as well as session tracking for the website. You can create sessions in PHP. It can access cookies variable and also set cookies. It helps to encrypt the data and apply validation. PHP Aug 01, 2023 Domantas G. & Ignas R. 7min Read How to Use PHP to Insert Data Into MySQL Database Managing data within a MySQL database is crucial for web applications and websites. While there are several methods available, one powerful approach is by using PHP to interact with the database.Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more. PHP 5 included new features such as improved support for object-oriented programming, the PHP Data Objects (PDO) extension (which defines a lightweight and consistent interface for accessing databases), and numerous performance enhancements. In 2008, PHP 5 became the only stable version under development. Introduction. In PHP, as in all programming languages, data types are used to classify one particular type of data. This is important because the specific data type you use will determine what values you can assign to it and what you can do to it (including what operations you can perform on it)..

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