A PHP source code file is called a PHP file. Hypertext Preprocessor code can be found in PHP source code files, which are identified by their extension (PHP). They are frequently used as web page files that allow a PHP engine running on a web server to produce HTML. What is displayed in the web browser is the HTML content that the PHP engine generates from the code. Certain PHP source code files have an alternative file extension, such as .PHPS, .PHTML, .PHP4, .PHP5, or .PHP7.
One example of a PHP opener is the built-in Notepad software in Windows, but a dedicated editor is normally recommended while working in PHP because of the usefulness of syntax highlighting. See our list of the top text editors for a selection of those that offer syntax highlighting. Although those apps allow you to make changes or modify the file, they do not allow you to start a PHP server. See FPDF or dompdf to create PDFs using PHP. When PHP code is surrounded by these tags rather than the standard HTML tag, it is interpreted as PHP and not HTML when embedded in an HTML file.
What is PHP?
PHP: Hypertext Preprocessor is the abbreviation for which PHP is used. PHP is a scripting language that runs on servers that is specifically intended for web development. Since it is open-source, using and downloading it is free. PHP’s initial version was inspired by Rasmus Lerdorf, who also contributed to its subsequent iterations. The server is where PHP code is executed. Numerous databases, including Oracle, Microsoft SQL Server, MySQL, PostgreSQL, Sybase, and Informix, can be combined with it. PHP is also used to power websites like www.yahoo.com and www.facebook.com. PHP instructions are performed on the server, while HTML codes are rendered immediately on the browser. This is what sets PHP apart from client-side languages like HTML.
Supported Image Formats
PHP is also capable of creating and working with image files in many more image formats, such as GIF, PNG, JPEG, WBMP, and XPM. Image streams can be output by PHP straight into a browser. PHP’s image functions are capable of retrieving the sizes of images in JPEG, GIF, PNG, SWF, TIFF, and JPEG2000 formats. You can operate with data contained in JPEG and TIFF image headers by using the exif extension. The GD library is not needed to use the exif functions. Many formats, such as JPEG, PNG, GIF, XBM, WBMP, WebP, and BMP, are supported by GD. GD provides read and write support for the JPEG, PNG, GIF, and WBMP file formats. In GD, the XPM format is supported for reading but not writing. GD provides read and write support for the WebP format. PHP 7.2.0 supports the BMP format, which can be read and written in GD. A wider number of formats, including those from Samsung, DJI, Panasonic, Sony, Pentax, Minolta, Sigma/Foveon, AGFA, Kyocera, Ricoh, and Epson, are now supported by the new EXIF extension. Exif_read_data() and exif_thumbnail(), two EXIF methods, now accept streams as their first input.
Opening a PHP File
A PHP file is a human-readable text file that can include PHP code or HTML tags. Actually, all you need to open a PHP file is a basic text editor that is installed on your computer. It is advised to use tools designed expressly for PHP programming because these tools offer many helpful capabilities, such as code autocomplete, syntax highlighting, and sophisticated search. Since new users will only be working with brief code snippets, programs like Notepad++ should work well for them. However, you should think about upgrading to more sophisticated editors and integrated development environments (IDEs) that include syntax highlighting, syntax autocomplete, and sophisticated search functions as you get into more serious PHP programming. Among the most well-liked and feature-rich editors and IDEs for PHP development are Eclipse, NetBeans, PhpStorm, and Sublime Text. Although there are many editors and integrated development environments (IDEs) that support PHP syntax, the final decision ultimately rests with you.
Formatting a PHP Page
The built-in formatter aids in maintaining the chosen coding style (such as "PSR-12") and keeping the code looking tidy. The code formatting creates or removes new lines as needed, normalizes whitespaces, line endings, opening and closing braces, indentation, and attractive print spaces. There are two ways to specifically initiate formatting:
- Format Document (Alt+Shift+F): Formats the current file in its entirety.
- Press Ctrl+K Ctrl+F to format the text that has been selected.
The formatting style is configured in the options. In JSON. The following table summarizes all the pertinent settings and their outcomes. The settings allow you to choose the styles. This formatting style conforms to PSR-1 and is compatible with PSR-12, which supersedes and replaces PSR-2. After Eric Allman, the Allman style was born. The braces are placed on the next line in this style. This holds true for all declarations and control statements.