How to put array in URL and transmit it in php

In PHP, you can use arrays to store a set of data and pass the data to other pages or systems in a certain format. Putting the array in the URL and transmitting it is a common way.

Transmitting the array in the URL can be achieved in the following two ways:

1. Use the GET request method and serialize the array

## The #GET request method can append data to the end of the URL in the form of key-value pairs, and we can serialize the array and then pass the serialized string through URL append.

The implementation is as follows:

<?php
// 将数组进行序列化，结果是一个字符串
$data = array(&#39;name&#39;=>'张三', 'age'=>18, 'sex'=>'男');
$queryString = http_build_query($data);

// 假设当前页面的url是http://www.example.com/test.php，将序列化后的字符串追加在url的末尾即可
$url = 'http://www.example.com/test.php?' . $queryString;
echo $url; // 输出结果：http://www.example.com/test.php?name=%E5%BC%A0%E4%B8%89&age=18&sex=%E7%94%B7
?>

In the above example, we used the

http_build_query() function to serialize the array. This function converts an array into a URL-encoded string. At the same time, we append the serialized string to the end of the URL of the current page to generate a new URL.

When the receiving end obtains the data in the URL, we need to use

$_GETSuper global variable:

<?php
// test.php
print_r($_GET); // 输出结果：Array ( [name] => 张三 [age] => 18 [sex] => 男 )
?>

In the above code, we use

$_GET The super global variable obtains the data in the URL and uses the print_r() function to print out the data.

Use the POST request method and place the array directly in the request body

The POST request method can transfer data to the request body on the server side, and we can Arrays are passed directly as data in the request body.

The implementation is as follows:

<?php
// 创建一个数组
$data = array(&#39;name&#39;=>'张三', 'age'=>18, 'sex'=>'男');

// 初始化CURL，设置请求的URL、请求方式、请求体等参数
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/test.php');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// 执行请求并获取响应内容
$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

In the above example, we used the cURL library to send the POST request and directly placed the array in the request body. On the server side, we can use the

$_POST super global variable to obtain the data transmitted by the POST request:

<?php
// test.php
print_r($_POST); // 输出结果：Array ( [name] => 张三 [age] => 18 [sex] => 男 )
?>

In the above code, we use the

$_POST super global variable The variable obtains the data transmitted by the POST request and uses the print_r() function to print out the data.

Conclusion

Transmitting arrays in URLs is a common data transmission method, but it should be noted that the size and security of the data need to be taken into consideration when transmitting data. We can choose the appropriate data transmission method to complete the data transmission according to the actual situation.

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