A brief analysis of Ssdb PHP API

First, Introduction

Ssdb's PHP API provides a convenient interface for PHP development. git address https://github.com/ideawu/ssdb.git, SSDB Official document address http://ssdb.io/zh_cn/

Second, the SSDB class structure diagram

PHP interface source files in/api/php/ssdb.php

Third, SSDB network protocol

Message

' \ n ' Block  :'\ n'\ n'Size   := literal_integerdata   := Size_bytes_of_data

Request

Request: = cmd blocks*cmd     := Block

Request commands include:get, set, del, ...

Response

Response: = Status block*status   := Block

Response status codes include:ok, not_found, error, fail, client_error

Example

Connect to the SSDB server with a telnet or NC command, and enter the following code (ending with the last line of Blank lines):

3 Get 3 Key

You will see a response similar to this:

2 OK 3 Val

In send processing in the API, the CMD and Argus are sent to the server in the format of the network protocol. The relevant code is as follows

Private functionSend$data){                $ps=Array(); foreach($data  as $p){                        $ps[] =strlen($p); $ps[] =$p; }                $s=Join("\ n",$ps) . "\ n"; if($this-Debug) {                        Echo' > '.Str_replace(Array("\ r", "\ n"),Array(' \ r ', ' \ n '),$s) . "\ n"; }                Try{                         while(true){                                $ret= @fwrite($this->sock,$s); if($ret==false){                                        $this-Close (); Throw NewSsdbexception (' Connection lost '); }                                $s=substr($s,$ret); if(strlen($s) = = 0){                                         Break; }                                @Fflush($this-sock); }                }Catch(Exception $e){                        $this-Close (); Throw NewSsdbexception ($e-getMessage ()); }                return $ret; }

A brief analysis of Ssdb PHP API