Php language pdf in hindi11/7/2023 String variables are used for values that contains characters. If a variable name is more than one word, it should be separated with an underscore ($my_string), or with capitalization ($myString)Ī string variable is used to store and manipulate text. A variable name should not contain spaces.A variable name can only contain alpha-numeric characters and underscores (a-z, A-Z, 0-9, and _ ).A variable name must start with a letter or an underscore "_".In PHP, the variable is declared automatically when you use it. In a strongly typed programming language, you have to declare (define) the type and name of the variable before using it. PHP automatically converts the variable to the correct data type, depending on its value. In the example above, you see that you do not have to tell PHP which data type the variable is. In PHP, a variable does not need to be declared before adding a value to it. Let's try creating a variable containing a string, and a variable containing a number: New PHP programmers often forget the $ sign at the beginning of the variable. The correct way of declaring a variable in PHP: When a variable is declared, it can be used over and over again in your script.Īll variables in PHP start with a $ sign symbol. Variables are used for storing a values, like text strings, numbers or arrays. įor maximum compatibility, we recommend that you use the standard form (Ī PHP file normally contains HTML tags, just like an HTML file, and some PHP scripting code.īelow, we have an example of a simple PHP script which sends the text "Hello World" to the browser: On servers with shorthand support enabled you can start a scripting block with. A PHP scripting block can be placed anywhere in the document. PHP code is executed on the server, and the plain HTML result is sent to the browser.Ī PHP scripting block always starts with. Here is a link to a good tutorial from PHP.net on how to install PHP5: ĭownload a nice text editor Because it is free, most web hosts offer PHP support. php files in your web directory, and the server will parse them for you. If your server supports PHP you don't need to do anything. XAMPP Server 5.6.33 for Windows platform Most people would prefer to install a all-in-one solution: Or find a web hosting plan with PHP and MySQL support.Install Apache (or IIS) on your own server, install PHP, and MySQL(WAMP/XAMPP/LAMP).To get access to a web server with PHP support, you can: PHP is easy to learn and runs efficiently on the server side.PHP is FREE to download from the official PHP resource:.PHP is compatible with almost all servers used today (Apache, IIS, etc.).PHP runs on different platforms (Windows, Linux, Unix, etc.).PHP combined with MySQL are cross-platform (you can develop in Windows and serve on a Unix platform).MySQL compiles on a number of platforms.MySQL is ideal for both small and large applications.PHP files have a file extension of ".php", ".php3", or ".phtml".PHP files are returned to the browser as plain HTML.PHP files can contain text, HTML tags and scripts. PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.).PHP is a server-side scripting language, like ASP.PHP stands for PHP: Hypertext Preprocessor.In our PHP tutorial you will learn about PHP, and how to execute scripts on your serverīefore you continue you should have a basic understanding of the following: PHP is the widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. This course will provide you all the basics to develop a web application, which covers HTML, CSS, Javascript, Jquery, PHP and MySQL.PHP is a powerful tool for making dynamic and interactive Web pages.
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