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To use PHP with an HTML form, the URL of the PHP script is specified in the action attribute of the form tag. The target PHP file then accesses the data passed by the form through PHP's $_POST or $_GET variables, depending on the value of the method attribute used in the form. Here is a basic form handler PHP script that will display the ...
Place this on a category page to generate a link to call the Wikipedia API to generate a list of pages in the category, limited to 500 results. Other uses. Use this on any page to see the number of items in a category of the same name. This is potentially useful on article talk pages which have a category with an identical name.
A category page contains text that can be edited, like any other page, but when the page is displayed, the last part of what is displayed is an automatically generated list of all pages in that category, in the form of links. Other category pages which appear in this list are treated separately, as subcategories.
The "example" entry allows you to display an example of an entry that a person might make for this variable, written exactly as a person might type it, character-for-character; if the type of entry has already been set with the "type" parameter (see below), then the example should reflect this (i.e., if the type has been set to "wiki-page-name ...
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The purpose of the delimiting tags is to separate PHP code from non-PHP data (mainly HTML). Although rare in practice, PHP will execute code embedded in any file passed to its interpreter, including binary files such as PDF or JPEG files, or in server log files.
Compared to a list, a category may have both advantages and disadvantages. Example of a category page. Every page in the article namespace should have at least one category. Categories should be on major topics that are likely to be useful to someone reading the article. For example:
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