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November 19, 2010


Difference Between Primary Key and Unique Key

Everybody knows about difference between Primary key and Unique key who is/was working with SQL. This is silly question but still in lots of interview, interviewer asking this question starting from Fresher post to Experience post. This is a basic question and you must be aware with all the differences. You may know the difference but may be not know all.

November 19, 2010

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SMTP -> ERROR: Failed to connect to server: Connection timed out (110)

SMTP -> ERROR: Failed to connect to server: Connection timed out (110). Connection time-out means the mail server cannot be reached anymore. If the mail server is different from your web server (i.e. not localhost) I had check with your hosting provider whether they enabled some sort of firewall that blocks connections on the SMTP port.

November 3, 2010

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Multiple MYSQL Database Connection in PHP

Do you want to make a MYSQL connection with multiple database in PHP? I am working on project where i need to use two database. I prefer not to make separate MYSQL connection for two database if both database is on same server and accessible by same user. You can simply use the database name before table name. Look at below code.

November 2, 2010

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Multiple MYSQL Database Connection with Zend Framework

Do you want to make a connection with multiple database in Zend Framework? Today i worked on multiple MYSQL database connection in Zend Framework as my client wants separate database to reduce the load of site. Its very easy to manage multiple database connection with ZF. You just need to add below code in bootstrap.php file and use the db object accordingly.