未记录的PHP自动将content-type：application / json解码为$ _REQUEST

Question

Is there really an undocumented feature in PHP to decode JSON POST body to $_REQUEST?

Not the same as PHP is automatically decoding JSON data?

I am creating an API in PHP to receive parameters in FormData and JSON. When I test in POSTMAN, it appears that PHP automatically decodes POST body with content-type:application/json to $_REQUEST .

I have been testing it whole afternoon and can't figure out how it is possible.

This is the post request:

curl -X POST \
  http://xxxxx.com/api/user/profile/update \
  -H 'content-type: application/json' \
  -d '{
    "id" : 174,
    "email" : "reed@xxxxx.com",
    "lang": "en_US",
}'

This is what I got in PHP

var_dump($_REQUEST)

//output
  'id' => int 174
  'email' => string 'reed@xxxxx.com' (length=19)
  'lang' => string 'en_US' (length=5)

Am I seeing delusion ??

If I change POST content-type to anything which is not application/json , the automatic decoding does not happen.

I am using PHP5.6 + Phalcon 3.1. Both not mentioning anything about automatically decoding JSON.

Here is my composer.json , I don't think any of these packages will do such a thing.

"require": {
    "twilio/sdk" : "4.*",
    "crossjoin/browscap": "~2.0",
    "mixpanel/mixpanel-php" : "2.*",
    "guzzlehttp/guzzle": "^6.2",
    "geoip2/geoip2": "~2.0",
    "overtrue/wechat": "~3.1",
    "mongodb/mongodb": "^1.0.0",
    "symfony/var-dumper": "^3.1",
    "maxmind-db/reader": "~1.0",
    "pda/pheanstalk": "^3.1",
    "nesbot/carbon": "^1.21",
    "sendgrid/sendgrid": "~5.1",
    "ramsey/uuid": "^3.5",
    "phpmyadmin/motranslator": "^3.0"
}

Tried my best to search on google. Can someone point me to a document with some explanation?

Answer 1

I figured out. It is PECL :: Package :: json_post

https://pecl.php.net/package/json_post

This extension provides a PHP content type handler for "application/json" and "text/json" to PHP's form data parser. If the Content-Type of an incoming request is text/json , the JSON contents of the request body will by parsed into $_POST .

I use remi repo to install PHP on centos. It just comes with my installation of PHP 5.6