JSON format and serialize serialization, jsonserialize
First, JSON format
1. What is JSON
JSON is a data storage format used to communicate client-side JavaScript and server PHP interactions. We pass the JSON-generated string to the foreground javascript,javascirpt, which we can easily reverse-json and then apply.
2. How to use JSON
PHP operation JSON can use Json_encode () and Json_decode () two functions--one encoding, one decoding. Json_encode () can convert arrays into JSON-formatted text data for easy storage and reading, while Json_decode () can directly convert JSON data into arrays for easy invocation.
!--? php $arr = Span class= "Hljs-keyword" >array ( ' name ' = ' Liu Lu ' /span>, ' Nick ' = ' Little Lulu ' , ' age ' =" , " ' contact ' =array ( ' phone ' = ' 1 3718136109 ' , ' address ' = ' Beijing Ifdoo ' ) ); $str = Json_encode ( $arr ); echo "GetProfile ($STR)" ; ?> The result is:
{"Name": "\u5218\u7490", "Nick": "\u7490\u5c0f\u7490", "Age": "+", "contact": {"Phone": "13718136109", "address": "\ U5317\u4eac \u5f97\u8c46 "}}
3. JSON-formatted data and web front-end JS complete asynchronous interaction process
After PHP uses Json_encode () to convert an array to JSON-formatted data, this JSON string is equivalent to an array in JavaScript, which is assigned to a variable and can be manipulated by the array.
4. Example
Index.html
<html><head><title>JSON demo
title
> <script type="Text/javascript"> function getprofile(str) { var arr = str; document. getElementById (' Nick '). InnerHTML = Arr.nick; }
Script
>
Head
><body> <div id="Nick">
Div
>
Body
><script type="text/javascript" src="./profile.php" >
Script
>
HTML
>profile.php
!--? php $arr = array ( = , ' nick ' = , ' age ' = ' 26 ' /span>, ' contact ' = array ( ' phone ' = ' 13718136109 ' , = ' Beijing Ifdoo ' ); $str = Json_encode ( $arr ); echo "GetProfile ($STR)" ; ?> HTML page called PHP file
The echo output in a.php is the JavaScript code.
PHP page Call js file
A.php in the Echo JS method can be.
II. serialization of Serialize
1. What is serialize?
Serialize is a string expression that serializes a variable and returns a variable type and structure.
2. How to use Serialize
Use PHP's serialize and unserialize to serialize and deserialize arrays.
$arr=Array("U1"=Array("Gamename"="de-B","Homename"="Bielefeld","Guestname"="Braunschweig","EndTime"="2015-08-21"),"U2"=Array("Gamename"="Premier League","Homename"="Crystal Palace","Guestname"="Aston Villa","EndTime"="2015-08-22") );EchoSerialize$arr);?>The result is:
A:2:{s:2: "U1"; A:4:{s:8: "Gamename"; s:6: "de-B"; S:8: "Homename"; s:15: "Bielefeld"; S:9: "Guestname"; s:12: "Braunschweig"; s:7: " EndTime "; s:10:" 2015-08-21 ";} S:2: "U2"; A:4:{s:8: "Gamename"; s:6: "Premier League"; S:8: "Homename"; S:9: "Crystal Palace"; S:9: "Guestname"; s:15: "Aston Villa"; s:7: "EndTime"; s:10 : "2015-08-22";}}
which
A:2 indicates that this is an array with two elements;
I:0 refers to the sequential index;
A:4 means there are 4 fields;
S:8: "Gamename" indicates that this is a string with 8 characters (string)
Summary: PHP's serialize is easy to store after serializing arrays, while JSON-formatted data is not only easy to store but also readable with other languages such as JavaScript. It is recommended to use JSON if the front-end interaction is used more, with PHP, Javascript, JSON, and Ajax to accomplish powerful data interactivity.
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