How to send post array in php

In the process of developing PHP applications, sometimes data needs to be transmitted through POST, where the POST parameter can be an array. Next, we will introduce how to transfer POST arrays in PHP.

The first method is to encode the parameters of POST into a JSON string and send it to the server. In order to implement this process, we need to use the PHP built-in function json_encode to convert the POST array into a JSON string:

$post_array = array(
    'name' => 'Bob',
    'age' => 30
);

$post_json = json_encode($post_array);

Then, we can use CURL or other network libraries to send a POST request and transfer the JSON string as shown below :

$curl = curl_init();

curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_json);
// 设置其他CURL选项

$response = curl_exec($curl);

curl_close($curl);

On the server side, you can use the json_decode function to decode the JSON string into an array:

$json_str = file_get_contents('php://input');
$post_array = json_decode($json_str, true);

The second method is to use the PHP built-in function http_build_query to encode the POST array into a URL-encoded form . This method is more suitable for use when passing data without retaining the original format.

$post_array = array(
    'name' => 'Bob',
    'age' => 30
);

$post_data = http_build_query($post_array);

Then, we can use CURL or other network libraries to send a POST request and transfer the URL-encoded POST data like this:

$curl = curl_init();

curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);
// 设置其他CURL选项

$response = curl_exec($curl);

curl_close($curl);

On the server side, you can use the $_POST super global Variable to get the POST parameters:

$name = $_POST['name'];
$age = $_POST['age'];

Regardless of the method, when passing the POST array, we need to ensure that the CURL options and server-side processing logic are set correctly.

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