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https://github.com/antoniocarioca/curl_post

How to use cURL to send POST with PHP.
https://github.com/antoniocarioca/curl_post

api curl php

Last synced: 3 days ago
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How to use cURL to send POST with PHP.

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# cURL_POST

How to use cURL to send POST with PHP.



## 1. Sending a POST Request with cURL:



```php

// URL to which the POST request will be sent

$url = 'http://127.0.0.1/cURL_4/insert/';



// Data to be sent in the POST request

$data = [

    'name' => 'XxZeroxX',

    'age' => 24,

    'message' => 'Testing Post via cURL'

];



// Convert data to JSON format

$json = json_encode($data);



// Headers to be sent with the POST request

$headers = [

    // Indicate that the content is JSON

    'Content-Type: application/json',

    // Specify the length of the content

    'Content-Length: ' . strlen($json)

];



// Initialize cURL session

$ch = curl_init($url);



// Set cURL options

curl_setopt_array($ch, [

    // Return the response as a string instead of outputting it directly

    CURLOPT_RETURNTRANSFER => true,

    // Set the request type to POST

    CURLOPT_CUSTOMREQUEST  => 'POST',

    // Set the headers

    CURLOPT_HTTPHEADER => $headers,

    // Set the POST data

    CURLOPT_POSTFIELDS => $json

]);



// Execute the cURL request and store the response

$result = curl_exec($ch);



// Check for any cURL errors

if(curl_errno($ch)) {

    // Output error message

    echo 'Erro ao enviar requisição cURL: ' . curl_error($ch);

}



// Close the cURL session

curl_close($ch);



// Output the response from the server

echo $result;



```



- This script sends a POST request to a specified URL ($url) using cURL.

- It constructs JSON data ($json) from an associative array ($data).

- Headers are set to indicate that the content being sent is JSON.

- A cURL session is initialized and configured with options such as request type, headers, and POST data.

- The request is executed (curl_exec) and the response is stored in $result.

- Error handling is done to check for cURL errors (curl_errno) and output them if any.

- Finally, the cURL session is closed, and the response from the server is output.



## 2. Handling POST Request Data and Inserting into Database:



```php

// Import the database connection configuration

require_once __DIR__ . '/../conexao.php';



// Get the raw POST data

$input = file_get_contents('php://input');



// Decode the JSON data into an associative array

$data = json_decode($input, true);



try {

    // Prepare SQL statement for inserting data into the "user" table

    $sql = 'INSERT INTO "user"(name,age,message) VALUES(:name,:age,:message)';

    $result = $conn->prepare($sql);



    // Bind parameters with values from the JSON data

    $result->bindParam(':name', $data['name'], PDO::PARAM_STR);

    $result->bindParam(':age', $data['age'], PDO::PARAM_INT);

    $result->bindParam(':message', $data['message'], PDO::PARAM_STR);



    // Execute the SQL statement

    $result->execute();



    // Check if the insertion was successful

    if ($result) {

        echo "User was inserted";

    }



} catch (Exception $e) {

    // Print any exceptions that occur during the execution

    print $e->getMessage();

}



```



- This script handles incoming POST data sent to the server.

- It includes a database connection configuration file (conect.php).

- The raw POST data is retrieved using file_get_contents('php://input').

- The JSON data is decoded into an associative array.

- SQL statement is prepared to insert data into a "user" table with placeholders for values.

- Parameters are bound with values from the JSON data to prevent SQL injection.

- The SQL statement is executed.

- If insertion is successful, it echoes a success message; otherwise, any exceptions caught during execution are printed.



These two scripts work together: the first sends a POST request with JSON data, and the second receives this data, inserts it into a database table.