PHP JSON Response API Basics

Ringkasan

Untuk API, PHP mengembalikan JSON: set header Content-Type: application/json, encode array via json_encode, dan atur status code.

Konsep Dasar

• header('Content-Type: application/json').
• echo json_encode($data, JSON_UNESCAPED_UNICODE).
• http_response_code(201) untuk Created, 400 bad request, dll.
• Baca body request: json_decode(file_get_contents('php://input'), true).

Cara Kerja / Struktur

php

header('Content-Type: application/json');
$data = ['id' => 1, 'nama' => 'Budi'];
echo json_encode($data, JSON_UNESCAPED_UNICODE);
// request
$input = json_decode(file_get_contents('php://input'), true);

Catatan Implementasi

• JSON_UNESCAPED_UNICODE agar UTF-8 tidak di-escape.
• Kirim exit/return setelah echo JSON biar tidak ada output tambahan.
• API lengkap (routing, auth) dibahas terpisah.

Kesalahan Umum

• Output lain (spasi/HTML) sebelum json_encode → JSON rusak.
• Lupa true di json_decode → returns stdClass.

Glosarium

• php://input: stream raw request body.
• HTTP status: kode hasil respon (200, 201, 400, 500).

Referensi

• PHP Request Lifecycle