PHP Communication & Stakeholder Relations 3

Question 1

Which PHP extension provides the most common way to make HTTP requests to external APIs?

Accepted Answer

curl

Answer

The cURL extension is the most widely used PHP tool for making HTTP requests to external services and APIs.

Question 2

What is the correct way to set a custom HTTP response header for an API endpoint in PHP?

Accepted Answer

header('Content-Type: application/json');

Answer

header() is the native PHP function for sending HTTP response headers before any output is flushed.

Question 3

In PHP's $_SERVER superglobal, which key holds the HTTP request method (GET, POST, etc.)?

Accepted Answer

$_SERVER['REQUEST_METHOD']

Answer

$_SERVER['REQUEST_METHOD'] contains the HTTP method used for the current request.

Question 4

Which PHP function reads the raw body of an incoming HTTP request, useful for JSON API payloads?

Accepted Answer

file_get_contents('php://input')

Answer

file_get_contents('php://input') reads the raw POST body, which is necessary to parse JSON payloads sent to an API.

Question 5

What does CORS stand for in the context of PHP web APIs communicating with browsers?

Accepted Answer

Cross-Origin Resource Sharing

Answer

CORS (Cross-Origin Resource Sharing) is a browser security mechanism that PHP APIs handle via specific response headers.

PHP - PHP Programming Language Practice Test