How to create JSON using data from MySQL database
JSON
(JavaScript Object Notation) is more preferred nowadays over XML as
it’s lightweight, readable and easily manageable for exchanging
data across various platforms.
we’ll see how JSON
Data can be created from Employee table stored in MySQL database.
1. Create Employee table in MySQL database.
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| CREATE TABLE IF NOT EXISTS `employee` ( | |
| `id_employee` int(3) unsigned NOT NULL AUTO_INCREMENT, | |
| `emp_name` varchar(10) DEFAULT NULL, | |
| `designation` varchar(9) DEFAULT NULL, | |
| `date_joined` date DEFAULT NULL, | |
| `salary` decimal(7,2) DEFAULT NULL, | |
| `id_dept` int(2) DEFAULT NULL, | |
| PRIMARY KEY (`id_employee`) | |
| ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=11 ; | |
| -- | |
| -- Dumping data for table `employee` | |
| -- | |
| INSERT INTO `employee` (`id_employee`, `emp_name`, `designation`, `date_joined`, `salary`, `id_dept`) VALUES | |
| (1, 'Himmat', 'CLERK', '2010-12-12', 2500.00, 20), | |
| (2, 'Manoj', 'SALESMAN', '2015-02-20', 3500.00, 30), | |
| (3, 'Mukesh', 'SALESMAN', '2011-02-22', 3550.00, 30), | |
| (4, 'Naresh', 'MANAGER', '2011-04-02', 3975.00, 20), | |
| (5, 'Ankush', 'SALESMAN', '2012-09-28', 3300.00, 30), | |
| (6, 'Ram', 'MANAGER', '2008-05-01', 3800.00, 30), | |
| (7, 'Minaxi', 'MANAGER', '2003-06-09', 3850.00, 10), | |
| (8, 'Satyam', 'SALESMAN', '2012-09-08', 3600.00, 30), | |
| (9, 'Pooja', 'CLERK', '2011-01-12', 2400.00, 20), | |
| (10, 'Jony', 'CLERK', '2009-12-03', 2600.00, 30); |
Create PHP file to read MySQL table and create JSON.get_json.php
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| <?php | |
| //Create Database connection | |
| $db = mysql_connect("localhost","root","root"); | |
| if (!$db) { | |
| die('Could not connect to db: ' . mysql_error()); | |
| } | |
| //Select the Database | |
| mysql_select_db("test_json",$db); | |
| //Replace * in the query with the column names. | |
| $result = mysql_query("select * from employee", $db); | |
| //Create an array | |
| $json_response = array(); | |
| while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) { | |
| $row_array['id_employee'] = $row['id_employee']; | |
| $row_array['emp_name'] = $row['emp_name']; | |
| $row_array['designation'] = $row['designation']; | |
| $row_array['date_joined'] = $row['date_joined']; | |
| $row_array['salary'] = $row['salary']; | |
| $row_array['id_dept'] = $row['id_dept']; | |
| //push the values in the array | |
| array_push($json_response,$row_array); | |
| } | |
| echo json_encode($json_response); | |
| //Close the database connection | |
| fclose($db); | |
| ?> | |
DONE
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More Advance
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More Advance
If you want to create a API which Provide data on pass parameter then you can use following code:
The following code used in for parameter pass for geting data in json format
http://localhost/test_more_advance.php?no=10
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>web service for Song list </title> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| </head> | |
| <body> | |
| <div>Test PHP </div> | |
| <?php | |
| // header('Content-type: html/text'); | |
| /* include db.config.php */ | |
| $db_host = 'localhost'; //hostname | |
| $db_user = 'root'; // username | |
| $db_password = ''; // password | |
| $db_name = 'test'; //database name | |
| $conn = mysql_connect($db_host, $db_user, $db_password ); | |
| mysql_select_db($db_name, $conn); | |
| $no=isset($_GET['no']) ? mysql_real_escape_string($_GET['no']) : ""; | |
| if(empty($no)){ | |
| $data = array("result" => 0, "message" => "Wrong id Let �s try once again!"); | |
| } else { | |
| $i=0; | |
| // get user data | |
| $sql = 'SELECT * FROM `employee` limit '.$no; | |
| $select = mysql_query($sql); | |
| $result = array(); | |
| while($data = mysql_fetch_assoc($select)) { | |
| $result[] = $data; | |
| $data = array("result" => 0, "data" => $result); | |
| // echo "name =".$data['data'][$i]['emp_name']; | |
| $i++; | |
| echo '<br />'; | |
| } | |
| $data = array("result" => 0, "data" => $result); | |
| } | |
| mysql_close($conn); | |
| // header('Content-type: application/json'); | |
| echo json_encode($data); | |
| ?> | |
| </body> | |
| </html> | |
| //Test your JSON on http://pro.jsonlint.com/ | |
| //*********************** | |
| //PHP interview Question | |
| //************************************************* | |
| //Click here : - See more at: http://php999.blogspot.in/ |
