php receives array of post request

In PHP development, receiving data from POST requests is an essential task. When we submit data using an HTML form, this data will be passed to the server, and we need to extract this data for processing in subsequent code. In this article, we will focus on how to receive data for POST requests.

Receive data from POST request through PHP:

When we submit a form using the POST method, the form data will be transmitted to the server as part of the HTTP request body. We can access this data using PHP's $_POST array. The following is a simple example:

If the code of a form is as follows:

<form action="process-form.php" method="post">
    <label for="name">Name:</label>
    <input type="text" id="name" name="name">

    <label for="email">Email:</label>
    <input type="email" id="email" name="email">

    <button type="submit">Submit</button>
</form>

After the form is submitted, we can use the $_POST array in the process-form.php file to access the submitted data. In this example, we can use the following code to print the submission data:

<?php
$name = $_POST["name"];
$email = $_POST["email"];

echo "Name: " . $name;
echo "<br>";
echo "Email: " . $email;
?>

$_The POST array is an associative array where the keys are the names of the form controls and the values ​​are the values ​​of that control. In the example above, we used two keys: "name" and "email".

It should be noted that we need to ensure that the name attribute of the form control matches the key of the $_POST array, otherwise we will not be able to access the submitted value.

POST limitations in PHP:

PHP has certain limits on the size of POST requests. The limit defaults to 8 MB. This means you cannot submit form data larger than 8 MB via the POST method.

However, the POST data size limit can be increased by modifying the php.ini file on the server. To do this, we can find the following line in the php.ini file:

post_max_size = 8M

This means that the size of the POST request will be limited to 8MB. We can change it to a larger value, for example:

post_max_size = 20M

This will increase the POST request size limit to 20MB.

Summary:

In PHP, Receiving data for a POST request is very simple. We just need to use the $_POST array to access the submitted form data. In addition, remember to modify the POST request size limit in the PHP configuration file to avoid being unable to handle large form data.

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