PHP somo la 88: Jisnsi ya kutengeneza json data kutoka kwenye database

Jinsi ya ku encode data kwenye databasekuwa JSON.

Hapa tutapitia hatuwa kwa hatuwa jinsi ya kuweza kuzi encode data zilizo kwenye database kuwa JSON.

Kwanza tutaanza kutengeneza database ambayo tutaiita employees, Kisha titatengeneza table na kuweka data. Tumia code zifuatazo za SQL kuweza kurahisisha mchakato huu

CREATE TABLE `employees` (

  `id` int(11) NOT NULL,

  `name` varchar(100) NOT NULL,

  `position` varchar(100) DEFAULT NULL,

  `salary` decimal(10,2) DEFAULT NULL

) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;

INSERT INTO `employees` (`id`, `name`, `position`, `salary`) VALUES

(1, 'John Doe', 'Software Engineer', 75000.00),

(2, 'Jane Smith', 'Project Manager', 85000.00),

(3, 'Alice Johnson', 'UX Designer', 70000.00),

(4, 'Bob Brown', 'DevOps Engineer', 80000.00);

ALTER TABLE `employees`

  ADD PRIMARY KEY (`id`);

ALTER TABLE `employees`

  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=5;

COMMIT;

Baada ya kuandaa database yetu hatuwa inayofuata ni ku connect na kusoma data. Sasa hapa nitaanza kusoma hiszo data zetu kawaida kama tulivyo zoea.

<?php

$servername = 'localhost';

$username = 'root';

$password = '';

$dbname = 'jsonDb';

// Create connection

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection

if ($conn->connect_error) {

   die('Connection failed: ' . $conn->connect_error);

}

echo 'Connection successful.<br>';

$sql = 'SELECT * FROM employees';

$result = $conn->query($sql);

$employees = array();

if ($result->num_rows > 0) {

   while ($row = $result->fetch_assoc()) {

       echo "name ".$row["name"]." Position ".$row["position"]. " Salary ".$row["salary"]."<br>";

   }

}

Sasa hatuwa inaofuata ni kutengeneza json data kutoka kwenye data zetu. Tutatuma fetch_assoc()    ili kusoma data kama array. Kutokana na data ambazo tumezipata hapo juu sasa tunataka kutengeneza array data. Ilikutengeneza array tutatumia function ya array()

Mfano:

$employees = array();

Wakati wa ku fetch data tutatumia mabano kutambulisha kuwa variable inahitaji array 

Mfano

$employees[] = $row;

Hii hapa itatengeneza array data kutoka kwenye database.baada ya hapo tuta encode data kwa ajili ya kuzifanya ziwe json.

Mfano:

<?php

$servername = 'localhost';

$username = 'root';

$password = '';

$dbname = 'jsonDb';

// Create connection

$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection

if ($conn->connect_error) {

   die('Connection failed');

}

$sql = 'SELECT * FROM employees';

$result = $conn->query($sql);

$employees = array();

if ($result->num_rows > 0) {

   while ($row = $result->fetch_assoc()) {

       // Collect each row's data in an array

       $employees[] = $row;

   }

} else {

   echo 'No records found.<br>';

}

// Encode the data to JSON format

$jsonData = json_encode($employees);