I have had a lot of experience with image modification modules with PHP. In order to perform image manipulation in PHP you need an image processing module installed such as GD2 or imagemagik. GD2 comes with PHP and can be installed fairly easily if it is not already installed. You can follow the PHP GD manually for the usage of these functions.
You can use the GD extension for PHP to edit image files.
PHP can create images of different sizes. It depends on a particular image.
You can't use PHP in an HTML document, but you can use HTML in PHP script.
To save an image URL in a database using PHP, you can create a table with a column to store the URL. When inserting data, you can use SQL queries with PHP to insert the URL into the database. Make sure to properly sanitize and validate the input to prevent SQL injection or other security vulnerabilities.
PHP can create images of different sizes. It depends on a particular image.
Image Slideshow is very difficult using php. Instead store the image files in an image folder and apply slideshow to them using javascript. Here's a reference to automatic slideshow using javascript: How_do_you_create_slide_show_using_javascript_code
PHP programming is a scripting language. This scripting language can be used in web page development. In addition, PHP commands can be embedded into an HTML document. PHP software is available at no cost.
Image creating and manipulating in PHP can be done with multiple libraries, some officially supported by PHP and some made by third parties. A common library, especially for developers new to image libraries, is the GD package. You must include the library you wish to use upon installation of PHP (if it is officially supported), or manually include the library into your scripts.
All you need is a text editor, such as "notepad". When you save a document, you simply add an extension - for example ".php" - to the end of the filename and make sure that the file type selected is "all files" ("*.*").
Build your form in HTML and specify your PHP file in the action of the document. HTML does the form stuff, PHP the processing (although you can - of course - use HTML inside PHP via print() or echo(), too)
Web server passes the requested document to PHP interpreter, which validates and processes PHP code in it, then the server reads the response from PHP interpreter and returns the resulting response to client.For an instance, Apache HTTPD uses instructions such as AddType, to know how to process various documents, basing on their extensions (the following example is common and may require changes depending on Apache HTTPD and PHP configuration):AddType application/x-httpd-php .php .p8p .txtThis directive instructs Apache HTTPD to let PHP process files which are suffixed with .php, .p8p or .txt, thus files such as index.php, Homepage.p8p and Settings.txt will be processed by PHP.
PHP is server-side, the browser itself does not interpret it. Rather, the browser sends a query to the server, and the PHP scripting generates custom HTML document. It is this HTML that you are seeing the source code of.