1.3 KiB
1.3 KiB
title |
---|
Working With JSON APIs |
Working With JSON APIs
A common use of JSON is to read data from a web server, and display the data in a web page.
This chapter will teach you how to exchange JSON data between the client and a PHP server.
The PHP File
PHP has some built-in functions to handle JSON.
Objects in PHP can be converted into JSON by using the PHP function json_encode()
:
<?php
$myObj->name = "John";
$myObj->age = 30;
$myObj->city = "New York";
$myJSON = json_encode($myObj);
echo $myJSON;
?>
The Client JavaScript
Here is a JavaScript on the client, using an AJAX call to request the PHP file from the example above:
Example
Use JSON.parse() to convert the result into a JavaScript object:
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var myObj = JSON.parse(this.responseText);
document.getElementById("demo").innerHTML = myObj.name;
}
};
xmlhttp.open("GET", "demo_file.php", true);
xmlhttp.send();
More Information:
- For more check this link