insert.php

<?php
include_once('koneksi.php');

if (!empty($_POST['user_id']) && !empty($_POST['judul']) && !empty($_POST['deskripsi'])) {
    $user_id = $_POST['user_id'];
    $judul = $_POST['judul'];
    $deskripsi = $_POST['deskripsi'];

    if (empty($_FILES['image'])) {
        set_response(false, "Foto harus diisi");
    } else {
        $image = $_FILES['image']['name'];
        $file = $_FILES['image']['tmp_name'];

        $dir = "image/";
        move_uploaded_file($file, $dir . $image);

        $query = "INSERT INTO Content(user_id, judul, deskripsi, image) VALUES ('$user_id', '$judul', '$deskripsi', '$image')";

        $insert = pg_query($connect, $query);

        if ($insert) {
            set_response(true, "Success insert");
        } else {
            set_response(false, "Failed insert");
        }
    }
} else {
    set_response(false, "Harus diisi");
}

function set_response($isSuccess, $message)
{
    $result = array(
        'isSuccess' => $isSuccess,
        'message' => $message
    );

    echo json_encode($result);
}