要使用GET方法提交表單數(shù)據(jù)到PHP腳本，首先創(chuàng)建一個設置method="get"的HTML表單，接著在PHP文件中通過$_GET超全局數(shù)組獲取數(shù)據(jù)，最後注意GET方法的限制。 1. 創(chuàng)建HTML表單時需設置method屬性為"get"並指定action指向PHP文件；2. 提交後數(shù)據(jù)以查詢字符串形式附加在URL後；3. PHP腳本中用isset()檢查鍵是否存在，並用htmlspecialchars()防止XSS攻擊；4. 注意GET數(shù)據(jù)可見、有長度限制且適合用於檢索、過濾或可共享的頁面，避免用於敏感信息或修改服務器狀態(tài)的操作。

Sure, you want to send form data to a PHP script using the GET method — it's pretty straightforward and commonly used for simple requests like search queries or filtering data.

Here's how to do it properly.

Create a Basic HTML Form with method="get"

Start by setting up your HTML form. The key is to set the method attribute to "get" and point the action to your PHP file.

 <form action="process.php" method="get">
  <label>Name:</label>
  <input type="text" name="username">
  <button type="submit">Submit</button>
</form>

When this form is submitted, the browser will take the input value and append it to the URL as a query string. So if the user types in "JohnDoe" , the URL would look like:

 process.php?username=JohnDoe

The name attribute of each input field becomes the key in the query string. Make sure those names are meaningful so you can easily access them in PHP.

Access the Data in Your PHP Script

In your process.php file (or whatever you named it), you can retrieve the values using the $_GET superglobal array.

 <?php
if (isset($_GET[&#39;username&#39;])) {
  $name = htmlspecialchars($_GET[&#39;username&#39;]);
  echo "Hello, " . $name;
} else {
  echo "No username provided.";
}
?>

A few things to note:

• Always check if the key exists using isset() to avoid errors.
• Use htmlspecialchars() to prevent XSS attacks when outputting user input.
• GET data is visible in the URL, so never use it for sensitive information like passwords.

Be Mindful of GET Method Limitations

There are a couple of important considerations:

• Data visibility: Everything sent via GET appears in the URL, which means it's not secure.
• Length limits: Browsers and servers have limits on how long a URL can be.
• Caching/bookmarking: Since data is in the URL, it can be bookmarked or cached.

Use GET when:

• You're retrieving data (not modifying it).
• You need simple filters or search parameters.
• You want users to be able to share or bookmark a result page.

Avoid GET when:

• Handling login forms or sensitive info.
• Sending large amounts of data.
• Modifying server state — POST is more appropriate then.

That's basically it. It works well for lightweight tasks, but always keep security and usage context in mind.

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