![]() It is not to be confused with associative processors. Rather, it arises from the fact that values are associated with keys. The name does not come from the associative property known in mathematics. Content-addressable memory is a form of direct hardware-level support for associative arrays.Īssociative arrays have many applications including such fundamental programming patterns as memoization and the decorator pattern. Many programming languages include associative arrays as primitive data types, and they are available in software libraries for many others. In some cases it is also possible to solve the problem using directly addressed arrays, binary search trees, or other more specialized structures. The two major solutions to the dictionary problem are hash tables and search trees. The dictionary problem is the classic problem of designing efficient data structures that implement associative arrays. It supports 'lookup', 'remove', and 'insert' operations. In mathematical terms, an associative array is a function with finite domain. In computer science, an associative array, map, symbol table, or dictionary is an abstract data type that stores a collection of (key, value) pairs, such that each possible key appears at most once in the collection. For other uses, see Map (disambiguation). For the higher-order function, see Map (higher-order function). The data sent by $post is sent in the section where a PHP file is called."Map (computer science)" redirects here. However, rather than sending it by using form’s action=””, the data will be sent by using the jQuery post method. A form is given to enter the same information as in above examples. In the following example, I will include the jQuery library to use the $post method of jQuery. This method is used to make ajax calls, where the data is sent and returned without refreshing the web page, as it happened in above examples. The jQuery’s ajax post method is used to send data by using HTTP request. ![]() Not only data sent by using the form’s method=post is contained in the $_POST array, but any data sent by using the HTTP Post request is accessible by using the $_POST. You can see the complete code in the demo page.Īn example of using $_POST with jQuery AJAX’s post method The same PHP script is used to get the values of the textbox or select dropdown by using the $_POST associative array. In the demo page, you can see the data is displayed after you enter the information and press the submit button. This website contains a series of Bootstrap tutorials that you may read here. See the example online by clicking the link or image below:įor using the Bootstrap classes, you have to include its CSS library into the web page. Finally, the entered values are displayed on the same webpage. The same form fields are used as in above example along with a submit button.Ĭlicking on the button will submit the form where PHP script will use the $_POST to assign entered information to variables. In this example, a web form is created by using the Bootstrap CSS classes. As such, Bootstrap is a popular web framework these days, so I covered this example. Technically, there is no difference while accessing the values from the simple HTML form or using the Bootstrap based form. Finally, those variable values are displayed on the web page. The data taken by using the PHP POST array is assigned to variables.
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