Are there any other ways to collect form data besides $_GET and $

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Are there any other ways to collect form data besides $_GET and $_POST?

醉折花枝作酒筹

Aug 02, 2021 pm 04:14 PM

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In the previous article, we learned about "$_POST" and "$_GET". If you need it, please read "Do you know what PHP uses to collect form data? 》. This time we introduce to you another method "$_REQUEST" for collecting form data in PHP. You can refer to it if necessary.

In the previous article we introduced "$_POST" and "$_GET", but we forgot to introduce "$_REQUEST", this article will introduce the last part, let php collect the form The data party ended perfectly.

First of all, let’s take a look at chestnuts. This has become our convention.

<!DOCTYPE html>
<html>
<body>

<form method="post" action="<?php echo $_SERVER[&#39;PHP_SELF&#39;];?>">
Name: <input type="text" name="fname">
<input type="submit">
</form>

<?php 
$name = htmlspecialchars($_REQUEST[&#39;fname&#39;]); 
echo $name; 
?>

</body>
</html>

The result is

Are there any other ways to collect form data besides $_GET and $_POST?

In order to contrast with the "$_POST" in the previous article, I deliberately wrote the chestnut to be similar to "$_POST" . But just looking at the results, there seems to be no difference. We all enter information in the input box. When we click submit, the information we just entered will appear on the page. Let's take a look at the code again. It seems that there is a difference in the code. The method attribute value of the form tag is still post, but there is a gap between "<?php " and "?>" It is no longer "$_POST['fname']", but "$_REQUEST['fname']". This may be the local difference between them.

Of course, let’s take a closer look at $_REQUEST first.

PHP $_REQUEST is used to collect data submitted by HTML forms. When a user submits form data by clicking the "Submit" button, the form data is sent to the script file specified in the action attribute of the

tag. In this example, we specify a file to process form data. If you want another PHP file to handle this data, you can modify the specified script file name. We can then use the super global variable $_REQUEST to collect input field data in the form.

Let’s take a closer look at the difference between $_REQUEST, $_POST and $_GET.

$_REQUEST[] has the functions of $_POST[] and $_GET[], but $_REQUEST[] is slower. All data submitted through the post and get methods can be obtained through the $_REQUEST array.

EGPCS means to use the $_REQUEST array to obtain the priority of the content. The meanings of the letters are: E represents $_ENV, G represents $ _GET, P stands for $_POST, C stands for $_COOKIE, and S stands for $_SESSION. The data that appears later will overwrite the data written earlier. The default data writing method is EGPCS, so the data contained in POST will overwrite the data using the same keyword in GET.

That’s all. If you want to know anything else, you can click here. → →

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