Author: infoweb

HTTP header and Server Response Codes

Posted on By infoweb No Comments on HTTP header and Server Response Codes
Web Server

Introduction

HTTP is a transfer protocol used by the World Wide Web (WWW) to retrieve information from distributed servers. The HTTP model is extremely simple; the client establishes a connection to the remote server, then issues a request. The server then processes the request, returns a response, and closes the connection. Most HTTP communication is initiated by a user agent and consists of a request to be applied to a resource on some origin server. HTTP communication usually takes place over TCP/IP connections. The default port is TCP 80, but other ports can be used like 21 (FTP), 443 (HTTPS).

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PHP Code Optimization

Posted on By infoweb No Comments on PHP Code Optimization
Optimization, PHP

I have found the post by Reinhold Webber, which provide good techniques and methods for PHP performance and optimization. I have tried to add more explanation to the points posted by Reinhold Webber.

    1. If a method can be static, declare it static. Speed improvement is by a factor of 4.
    2. echo is faster than print and print_r.
    3. Use echo’s multiple parameters instead of string concatenation.
    4. Set the maxvalue for your for-loops before and not in the loop.
    5. Unset your variables to free memory, especially large arrays.
    6. Avoid magic like __get, __set, __autoload.

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