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How to use PHP to implement drop-down box submission jump function

PHPz
Release： 2023-03-24 14:21:55
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PHP is a scripting language widely used in Web development. It has the advantages of being easy to learn, efficient, and cross-platform. The drop-down box is an interactive control commonly used in Web pages. It allows users to select one from multiple options and then submits its value to the server for processing. In the process of web development, drop-down box submission jump is a common functional requirement. This article will introduce how to use PHP to implement drop-down box submission jump.

1. Basic knowledge of drop-down boxes

In HTML, drop-down boxes can be defined through thetag, you can use The

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Among them, the name attribute is used to specify the name of the drop-down box, and the value attribute is used to specify the value of the option. When the form is submitted, the value of the selected option will be Passed as parameters to the server for processing.

2. Use PHP to implement drop-down box submission jump

When implementing drop-down box submission jump, the drop-down box and jump operations are generally placed in the same On the page, when the user selects an option in the drop-down box, the page will automatically jump to another page, and the value of the selected option will be passed to the server as a parameter for processing. The following are the implementation steps:

  1. Write the code for the drop-down box

First you need to write the code for the drop-down box and place it in the HTML page, as shown below:
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In this code, the onchange event is used in the