Node Js Php Serialize Class
You need to provide some criteria by which 'best' can be determined, e.g. Fastest, most flexible, robust. The only way to serialise an object is to iterate over its properties and create a text representation of the property and its value. I have been using Redis since few weeks now and I stumble into a weird problem after few days. At first, my serialization was fine. I was able to serialize, cache and deserialize without problem. After few times, I wasn’t able to unserialize my serialize. First of all, I am using JSON.Net for serialization and deserialization. Sep 01, 2015 php-serialization. Javascript tool to unserialize php serialized data, or to serialize data the way php does. This was originally used in manipulating php session stored in redis server. This also supports Laravel extended php session serialization (can be used to serialize/unserialize Laravel session) Installation Node.js. Install from npm.
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 file
$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:
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();
PHP Array
Arrays in PHP will also be converted into JSON when using the PHP function json_encode():
PHP file
$myArr = array('John', 'Mary', 'Peter', 'Sally');
$myJSON = json_encode($myArr);
echo $myJSON;
?>
The Client JavaScript
Here is a JavaScript on the client, using an AJAX call to request the PHP file from the array example above:
Example
Use JSON.parse() to convert the result into a JavaScript array:
xmlhttp.onreadystatechange = function() {
if (this.readyState 4 && this.status 200) {
var myObj = JSON.parse(this.responseText);
document.getElementById('demo').innerHTML = myObj[2];
}
};
xmlhttp.open('GET', 'demo_file_array.php', true);
xmlhttp.send();
Try it Yourself »PHP Database
Js Serialize Json
PHP is a server side programming language, and should be used for operations that can only be performed by a server, like accessing a database.
Imagine you have a database on the server, containing customers, products, and suppliers.
You want to make a request to the server where you ask for the first 10 records in the 'customers' table:
Example
Use JSON.stringify() to convert the JavaScript object into JSON:
dbParam = JSON.stringify(obj);
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState 4 && this.status 200) {
document.getElementById('demo').innerHTML = this.responseText;
}
};
xmlhttp.open('GET', 'json_demo_db.php?x=' + dbParam, true);
xmlhttp.send();
Example explained:
- Define an object containing a table property and a limit property.
- Convert the object into a JSON string.
- Send a request to the PHP file, with the JSON string as a parameter.
- Wait until the request returns with the result (as JSON)
- Display the result received from the PHP file.
Take a look at the PHP file:
PHP file
header('Content-Type: application/json; charset=UTF-8');
$obj = json_decode($_GET['x'], false);
$conn = new mysqli('myServer', 'myUser', 'myPassword', 'Northwind');
$stmt = $conn->prepare('SELECT name FROM ? LIMIT ?');
$stmt->bind_param('ss', $obj->table, $obj->limit);
$stmt->execute();
$result = $stmt->get_result();
$outp = $result->fetch_all(MYSQLI_ASSOC);
echo json_encode($outp);
?>
PHP File explained:
- Convert the request into an object, using the PHP function json_decode().
- Access the database, and fill an array with the requested data.
- Add the array to an object, and return the object as JSON using the json_encode() function.
Loop Through the Result
Convert the result received from the PHP file into a JavaScript object, or in this case, a JavaScript array:
Example
Use JSON.parse() to convert the JSON into a JavaScript object:
xmlhttp.onreadystatechange = function() {
if (this.readyState 4 && this.status 200) {
myObj = JSON.parse(this.responseText);
for (x in myObj) {
txt += myObj[x].name + '<br>';
}
document.getElementById('demo').innerHTML = txt;
}
};
...
PHP Method = POST
When sending data to the server, it is often best to use the HTTP POST method.
To send AJAX requests using the POST method, specify the method, and the correct header.
The data sent to the server must now be an argument to the send() method:
Example
dbParam = JSON.stringify(obj);
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState 4 && this.status 200) {
myObj = JSON.parse(this.responseText);
for (x in myObj) {
txt += myObj[x].name + '<br>';
}
document.getElementById('demo').innerHTML = txt;
}
};
xmlhttp.open('POST', 'json_demo_db_post.php', true);
xmlhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
xmlhttp.send('x=' + dbParam);
The only difference in the PHP file is the method for getting the transferred data.
PHP file
Use $_POST instead of $_GET:
header('Content-Type: application/json; charset=UTF-8');
$obj = json_decode($_POST['x'], false);
$conn = new mysqli('myServer', 'myUser', 'myPassword', 'Northwind');
$stmt = $conn->prepare('SELECT name FROM ? LIMIT ?');
$stmt->bind_param('ss', $obj->table, $obj->limit);
$stmt->execute();
$result = $stmt->get_result();
$outp = $result->fetch_all(MYSQLI_ASSOC);
echo json_encode($outp);
?>