YP46kb16

1<?php
2
3require 'db_config.php';
4/**
5 * <?php
6 * $servername = "127.0.0.1";
7 * $username = "root";
8 * $password = "";
9 * $dbname = "myDB";
10 * ?>
11 */
12// Create connection
13$conn = new mysqli($servername, $username, $password, $dbname);
14// Check connection
15if ($conn->connect_error) {
16    die("Connection failed: " . $conn->connect_error);
17}
18
19////////////////////////////////////////////////////////////////////////////////////////////
20// ****DATABASE CREATION *********/////////////////
21// Create connection
22// $conn = new mysqli($servername, $username, $password);
23// Check connection
24// if ($conn->connect_error) {
25    // die("Connection failed: " . $conn->connect_error);
26// } 
27
28
29// Create database
30$sql = "CREATE DATABASE IF EXISTS myDB";
31if ($conn->query($sql) === true) {
32    echo "Database created successfully";
33} else {
34    echo "Error creating database: " . $conn->error;
35}
36//////////////////////////////////
37// sql to create table
38$sql = "CREATE TABLE IF EXISTS MyGuests (
39    id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, 
40    firstname VARCHAR(30) NOT NULL,
41    lastname VARCHAR(30) NOT NULL,
42    email VARCHAR(50),
43    reg_date TIMESTAMP
44    )";
45    
46if ($conn->query($sql) === true) {
47    echo "Table MyGuests created successfully";
48} else {
49    echo "Error creating table: " . $conn->error;
50}
51
52//insert data
53$sql = "INSERT INTO MyGuests (firstname, lastname, email)
54VALUES ('John', 'Doe', 'john@example.com')";
55
56if ($conn->query($sql) === true) {
57    echo "New record created successfully";
58} else {
59    echo "Error: " . $sql . "<br>" . $conn->error;
60}
61
62//get last id
63$sql = "INSERT INTO MyGuests (firstname, lastname, email)
64VALUES ('John', 'Doe', 'john@example.com')";
65
66if ($conn->query($sql) === true) {
67    $last_id = $conn->insert_id;
68    echo "New record created successfully. Last inserted ID is: " . $last_id;
69} else {
70    echo "Error: " . $sql . "<br>" . $conn->error;
71}
72
73//insert multiple records
74$sql = "INSERT INTO MyGuests (firstname, lastname, email)
75VALUES ('John', 'Doe', 'john@example.com');";
76$sql .= "INSERT INTO MyGuests (firstname, lastname, email)
77VALUES ('Mary', 'Moe', 'mary@example.com');";
78$sql .= "INSERT INTO MyGuests (firstname, lastname, email)
79VALUES ('Julie', 'Dooley', 'julie@example.com')";
80
81if ($conn->multi_query($sql) === true) {
82    echo "New records created successfully";
83} else {
84    echo "Error: " . $sql . "<br>" . $conn->error;
85}
86
87//select data or showing records
88$sql = "SELECT id, firstname, lastname FROM MyGuests";
89$result = $conn->query($sql);
90
91if ($result->num_rows > 0) {
92    // output data of each row
93    while ($row = $result->fetch_assoc()) {
94        echo "id: " . $row["id"]. " - Name: " . $row["firstname"].
95         " " . $row["lastname"]. "<br>";
96    }
97} else {
98    echo "0 results";
99}
100
101//update data
102$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";
103
104if ($conn->query($sql) === true) {
105    echo "Record updated successfully";
106} else {
107    echo "Error updating record: " . $conn->error;
108}
109
110// sql to delete a record
111$sql = "DELETE FROM MyGuests WHERE id=3";
112
113if ($conn->query($sql) === true) {
114    echo "Record deleted successfully";
115} else {
116    echo "Error deleting record: " . $conn->error;
117}
118
119$conn->close();
120?>