|
[x]
Posted via EE Mobile
|
|
| Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again. |
|
|
|
|
|
[x]
The Solution Rating System
|
|
| With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating. - The Grade of the Solution
- The Zone Rank of the Expert Providing the Solution
- The Number of Author and Expert Comments
- The Number of Experts Contributing
- The Feedback of the Community
Your Input Matters Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site. If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support. Thank you! |
|
|
|
|
Asked by IDEASDesign in PHP Scripting Language, PHP and Databases, MySQL Server
I recently updated a "username" column in a MySQL database with a "UNIQUE" constraint.
Someone had suggested to me that this would be a quick and easy way to prevent the entering and storing of duplicate usernames in the database. It was easy enough to do, .. and it DOES prevent the duplicates. However, it's not very elegant, and gives no message or indication to the user that a duplicate record was encountered. All that happens is that the page refreshes itself.
I need to update my "ADD USER" module so that it displays a descriptive error message to the person filling out the form if if/when they try to submit a duplicate username.
It's my understanding that -- using PHP -- it's possible to sniff out what kind of database error message/number was encountered, and to perform certain actions based on that. How would I do something like that? More specifically --- what kind of PHP scripting would I need to add to handle a MySQL database error message that pertains to the "UNIQUE" constraint being encountered?
Thanks in advance!
- Yvan
20090824-EE-VQP-74 / EE_QW_2_20070628