Required verification method for name input when HTML is transferred to PHP page

Required verification method for name input when HTML is transferred to PHP page

In web development, form information verification is a very important part. When users fill in the form, we usually perform required verification on each field to ensure that the information entered by the user is complete and accurate. This article will introduce how to perform required verification on the name field in the HTML form, and combine it with the PHP page to process the name entered by the user.

The required verification of the name field in the HTML form can be achieved by setting the required attribute in the input tag. The specific code is as follows:

<form action="process.php" method="post">
    <label for="name">姓名：</label>
    <input type="text" id="name" name="name" required>
    <input type="submit" value="提交">
</form>

In the above code, the required attribute of the input tag indicates that the name field is required. When the user submits the form, if the name field is empty, a prompt will be given and the form will be blocked. submit.

To receive the name entered by the user in the PHP page, you can obtain the data submitted by the form through the $_POST super global array and then process it. The following is a simple sample code:

$name = $_POST['name'];

if(empty($name)){
    echo '姓名不能为空，请重新填写！';
}else{
    echo '您输入的姓名是：'.$name;
    // 这里可以继续对姓名进行其他处理操作
}

In the above PHP code, first get the name entered by the user through $_POST['name'], and then use the empty function to determine whether the name is empty. If the name is empty, a prompt message is output; if the name is not empty, the name entered by the user is output, and other processing operations on the name can be continued.

To sum up, by setting the required attribute in the HTML form, the name field can be verified, and in the PHP page, the $_POST super global array is used to obtain the name entered by the user, and perform the corresponding processing operations. This can effectively ensure that the name entered by the user is complete and accurate, improving user experience and data quality.

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