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My focus in PHP has been calculations, reporting, database manipulation (MySQL), automated scripting, screen scraping, and tracking systems. A summary of my business is posted at

Experience in the area

I've been programming in many languages for over 15 years, but the last several years I've focused on php for websites and perl for data processing. I've posted several tricks I've learned at


I have a bachelors degree and a masters degree, both in electrical engineering from Arizona State University.

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Sam02/05/16101010Thank you so much for always being .....
sam04/13/14101010Thank you very much Robert, I really .....
TD06/27/13101010Thank you for the quick response, the .....
kezah02/18/12101010good job!

Recent Answers from Robert Davis

2013-08-29 issue with sqli object in php code:

Hello Ashish,  I would recommend following the example in the mysqli quick start guide at  $mysqli = new mysqli("", "user", "password"

2013-06-27 PHP if statements inside a SQL query:

Hi TD,  Your $query is a string variable, so if you want parts of it to be dynamic you'll need to close the string before each if statement and append to it as needed (and if you are not escaping your

2012-05-12 How to begin in PHP..! ! The correct way....:

Hi Tushar,  It really depends what your current experience is and how well you know other languages.  It sounds like you are using php to interact with a database.  That's fine, but it involves more than

2012-03-02 insert into mysql a list of values:

Hi Kezah,  It's not clear to me which limitation you are facing because you didn't mention an error message, but I know when I've had timeout issues I've used a separate scheduled job to download the page

2012-02-28 insert into mysql a list of values:

Hi Kezah,  The problem is just what the error says, you are listing twice as many elements in the values section of the query as the fields section.  The values param needs to use array_values($array)


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