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What to Look for in PHP 5.4.0
PHP 5.4.0 will arrive soon. The PHP team is working to bring to some very nice presents to PHP developers. In the previous release of 5.3.0 they had added a few language changes. This version is no different. Some of the other changes include the ability to use DTrace for watching PHP apps in BSD variants (there is a loadable kernel module for Linux folks). This release features many speed and security improvements along with some phasing out of older language features (Y2K ...
PHP,5.4,New feature,Built-in server,Trait 2011-12-21 10:20:12
20 Database Design Best Practices
Use well defined and consistent names for tables and columns (e.g. School, StudentCourse, CourseID ...).Use singular for table names (i.e. use StudentCourse instead of StudentCourses). Table represents a collection of entities, there is no need for plural names.Don’t use spaces for table names. Otherwise you will have to use ‘{‘, ‘[‘, ‘“’ etc. characters to define tables (i.e. for accesing table Student Course you'll write “Student Cour...
Database design,20 tips,Well defined name,Design pattern 2012-02-07 12:10:48
What does a contemporary web developer need to know?
The early ages of web era mainly consisted of webpages of text and links. At that time,Netscape was the still dominant of web browser market. As a web developer, you could develop web apps(or better to call web pages) easily with knowledge of HTML only. But with the evolution of web, new technologies came out, we can see more robust web apps around us everywhere. Today as a web developer, the ability to run and configure a web server and edit HTML to create some simple web pages has lost almost ...
Web design,Advice 2013-12-20 06:31:51
mysql – connection example
Mysql is a database, and to gain access to the data within C++ you will need to be able to “talk†to the database via queries (just like on the mysql command line interface e.g. select * from tablename), the connection process is very similar to the command line interface you will need to supply connection details as in hostname (localhost normally), username, password, database to use and also there are other details that you can pass e.g port number more information can be gained f...
C++,Database,MySQL,Connection,Example 2011-10-29 00:42:10
Unknown system variable 'query_cache_size' in DbVisualizer while accessing MySQL
DbVisualizer is a very popular GUI application to view the data stored on a database. It supports various databases such as Oracle, MySQL etc. It relies on different database drivers to connect to the database server and access the data stored there. In this post, we will try to solve one problem when accessing the latest MySQL database(8.0+) through DbVisualizer. MySQL database starting from 8.0 has lots of changes which may not be compatible with old version of software or libraries whic...
MYSQL,MYSQL 8,DBVISUALIZER,QUERY_CACHE_SIZE 2018-06-30 03:48:17
Open Source Needs a New UI
As a freelance web developer, I’ve seen and used my fair share of open source web applications (and desktop software), and I’d like to point out something that I see all too often in open source projects: the user interface almost always lets the project down. Let me explain… The Problem I’ve used a considerable amount of open source software (web-based and desktop), and I feel that a large portion of them are let down by their UI. The functionality is brill...
Open source,Problem,UI,New paradign 2011-12-09 07:53:19
Nimbula 'cloud operating system' spans data centers
Nimbula – the build-your-own-cloud outfit founded by Amazon's former vice president of engineering – has announced a new release of its Director platform, saying it will allow businesses to run a unified "infrastructure cloud" across geographically separate data centers. In short, this means that those using such a cloud can log into a single console to tap computing resources served up from disparate physical locations. Nimbula says that Director is the first "cloud OS" t...
Nimbula,Cloud computing,Data center,Arch 2011-08-23 08:06:39
Server monitoring shell scripts
There are many open source server monitoring software such as cacti and nagios. Besides these, can we write our own shell scripts to monitor them? The shell scripts written by ourselves can fulfill our special requirements better and have a more detailed coverage. Below are some commonly used shell scripts used by Evangelist, an Oracle DBA. 1. Check network gateway traffic #!/bin/bash #network #Mike.Xu while : ; do time='date +%m"-"%d" "%k":"%M' day='date +%m"-"%d' rx_before='...
Server monitor,CPU,memory,shell 2013-08-30 21:56:14
Resolve high CPU usage issue caused by file_get_contents in PHP
Sometimes a Linux server which runs Nginx + PHP-CGI(php-fpm) web service may experience sudden system load increase and the CPU usage is around 100% for many php-cgi processes when checking with top command. If this happens, file_get_contents may be the cause if it's used in the PHP script. In lots of web applications, normally there are lots of API requests based on HTTP. Many PHP developers like to use file_get_contents("http://example.com/") to get the API response because it's simple to...
PHP,FILE_GET_CONTENTS,PHP-CGI 2018-11-09 21:35:00
Install and remote access phpMyAdmin on CentOS
phpMyAdmin is a free and open source tool written in PHP intended to handle the administration of MySQL with the use of a Web browser. It can perform various tasks such as creating, modifying or deleting databases, tables, fields or rows; executing SQL statements; or managing users and permissions.Today I walk through you the steps to install phpMyAdmin on CentOS. Actually, these steps are applicable to other Linux systems as well. 1. Download the phpMyAdmin from Sourceforge.net. Run command:wge...
phpMyAdmin,linux,installation,demo 2012-06-21 07:30:29
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