PHP : How to submit “JSON” via the PUT method?

问题

I'm making (and testing) my small PHP API. Both GET/POST methods are all fine while submitting the JSON as data-type.

Problem in PUT

I cannot submit the JSON data via PUT method. When i do, the Server-side got empty data.
But when i DO NOT use json as data-type, (and just use the plain text data), then i can receive and parse the data, successfully. <----(( This is something weird! ))

Here are my tested cases.

Client Side (Submissions)

(Submit via PHP) submit.php:

$data = array("fruit"=>"watermelon", "destination"=>"germany");
$data = json_encode($data);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/api.php");
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json','Content-Length: ' . strlen($data)));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$respond = curl_exec($ch);
curl_close($ch);
print_r($respond);

(Submit via Postman):

Server Side (Receiving / Parsing)

api.php:

$decoded_input = json_decode(file_get_contents("php://input"), true);
parse_str($decoded_input, $putdata);

header('Content-type: application/json');
echo json_encode( $putdata );

Output

[]

Question

So it seems like receiving/parsing at the Server-side is the issue.

How to submit JSON data-type via the PUT method?
Are there some settings in my Server Side (Apache + PHP) to enable (to allow) the json data-type in PUT method?

** I just can't get JSON works via the PUT method. Thanks all for kind helps.

回答1:

<?php
$decoded_input = json_decode(file_get_contents("php://input"), true);

//Here you have usual php array stored in $decoded_input. Do some stuff with it.

header('Content-type: application/json');
echo json_encode($decoded_input);

回答2:

Sorry, can't comment, Rep to low.

Some weeks ago i also played around with simple API calls and i made a little function to handle them.

public function callAPI($method, $url, $data = false) {

    $ch = curl_init ();

    switch ($method) {
        case "POST" :
            curl_setopt ( $ch, CURLOPT_POST, 1 );

            if ($data) {
                curl_setopt ( $ch, CURLOPT_POSTFIELDS, $data );
                curl_setopt ( $ch, CURLOPT_HTTPHEADER, array (
                    'Content-Type: application/json',
                    'Content-Length: ' . strlen ( $data ) 
                ));
            }
            break;
        case "PUT" :
            curl_setopt ( $ch, CURLOPT_PUT, 1 );
            break;
        case "GET" :
            //No settings required
        break;
    }

    curl_setopt ( $ch, CURLOPT_URL, $url );
    curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );

    $responde = curl_exec ( $ch );

    curl_close ( $ch );

    return $responde;
}

Seems like there is another setting required for PUT

curl_setopt ( $ch, CURLOPT_PUT, 1 );

AFAIK your option curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT"); only changes the string which is sent, not the actual method

Soruce: https://curl.haxx.se/libcurl/c/CURLOPT_CUSTOMREQUEST.html

来源：https://stackoverflow.com/questions/38451617/php-how-to-submit-json-via-the-put-method

标签

php