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What is the usage of $_REQUEST in php

青灯夜游

Feb 10, 2022 pm 05:12 PM

php

In php, the predefined variable "$_REQUEST" can be used to obtain the data submitted by the form through POST or GET, and can also be used to obtain COOKIE information; it is an array, including "$ _GET", "$_POST" and "$_COOKIE".

What is the usage of $_REQUEST in php

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php predefined variable $_REQUEST

In the actual development process, when we don’t know which way the form submits data, how do we get the data?

PHP provides a $_REQUEST global variable, which is an array containing $_POST, $_GET and $_COOKIE. The array structure is similar to $_POST and $_GET.

That is to say, whether the data is submitted using POST or GET, you can use $_REQUEST to obtain it, and you can even use $_REQUEST to obtain COOKIE information. The request_order attribute was introduced in PHP5.3. We can control the content contained in $_REQUEST by modifying the value of the request_order attribute in the php.ini configuration file.

The value of the request_order attribute can be the three uppercase English letters G, P and C, which represent GET, POST and COOKIE respectively. By default, the default value of the request_order attribute is request_order="GP", which does not include C, which means that $_REQUEST does not contain COOKIE information. If we want $_REQUEST to contain COOKIE, we need to modify it to request_order="GPC".

Example:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>表单提交</title>
</head>
<body>
    <p>------------------------get------------------------</p>
    <form action="index.php" method="get">
        姓名：<input type="text" name="name" placeholder="请输入姓名"><br>
        性别：<input type="radio" name="sex" value="男">男
              <input type="radio" name="sex" value="女">女<br>
        爱好：<input type="checkbox" name="hobby[]" value="read">阅读
              <input type="checkbox" name="hobby[]" value="travel">旅游
              <input type="checkbox" name="hobby[]" value="sport">运动
              <input type="checkbox" name="hobby[]" value="internet">上网<br>
        职业：<select name="job">
                    <option value="coder">程序员</option>
                    <option value="teacher">教师</option>
                    <option value="doctor">医生</option>
                    <option value="other">其它</option>
              </select><br>
        <input type="submit" value="提交">&emsp;&emsp;<input type="reset" value="重置">
    </form>
    <p>------------------------post------------------------</p>
    <form action="index.php" method="post">
        姓名：<input type="text" name="name" placeholder="请输入姓名"><br>
        性别：<input type="radio" name="sex" value="男">男
              <input type="radio" name="sex" value="女">女<br>
        爱好：<input type="checkbox" name="hobby[]" value="read">阅读
              <input type="checkbox" name="hobby[]" value="travel">旅游
              <input type="checkbox" name="hobby[]" value="sport">运动
              <input type="checkbox" name="hobby[]" value="internet">上网<br>
        职业：<select name="job">
                    <option value="coder">程序员</option>
                    <option value="teacher">教师</option>
                    <option value="doctor">医生</option>
                    <option value="other">其它</option>
              </select><br>
        <input type="submit" value="提交">&emsp;&emsp;<input type="reset" value="重置">
    </form>
</body>
</html>
<?php
    if(!empty($_REQUEST)){
        echo &#39;提交成功！<br><pre class="brush:php;toolbar:false">&#39;;
        var_dump($_REQUEST);
    }
?>

Run the above code, no matter which submission method is selected, you can successfully receive the information passed by the form using $_REQUEST.

What is the usage of $_REQUEST in php

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