php + mysql count consecutive data

Posted on 16th Feb 2014 07:03 pm by admin

I have a database of values and I want to work out how to display them if the values match a consecutive pattern.

For example, I might have the table "eggs" with the values "1", "2", "3", "4", "6", "7", "8", "9", "10". Now if I were to count these up I'd have 9 total values, this is good. What I want to do is ONLY count the values where they have another 2 consecutive values after them. So for example if the above pattern is what I'm using and I want to check for 2 consecutive values, the following would happen:

1 -> correct, it is followed by "2" and "3".
2 -> correct, it is followed by "3" and "4".
3 -> false, it is followed by "4" but no "5"
4 -> false, it is followed by "6", no"5".
6 -> correct, followed by "7" and "8".
7 -> correct, followed by "8" and "9".
8 -> correct, followed by "9" and "10".
9 -> false, followed by "10" but no "11".

and this would return the total of 7, because 7 of these values are followed by 2 consecutive numbers, therefore are correct.

So my question: How would I go about this? Would it be a matter of a single (albeit complex) mysql query or will I have to do some more advanced stuff after fetching the array? If it's the second I can do that myself, but I'd like to (hopefully) do it in a query!

So, any ideas?

Your Answer:

Login to answer

Other forums

Removing Title From database problem
Hi again ! i am having an issue with updating database. When i update any price of a title it remove

BI in Upstream Production operations
Appreciate if you can assist in the following areas:
1) Examples of life before and after BI i

foreach result into a single variable
Hi,

I have this code...

Code: [Select]foreach ($_POST['Interests'] as $interest =&

remove innitial

and

tags
i am using tiny_mce as a text editor for my CMS.
buy now the problem is it add <p>

Adding Different Numbers From MySQL
Basically I have a mysql database with a couple prices as the following:

9.99
9.99
9.99

if php cookie set, show code...
Hi all.. I need to figure out this little snippet right quick.. seems like it should be easy enough

TimeZoneOffset
Hello,

Please i need your help. I have a system that users can use to punch in and out. This

PHP5 - AJAX help
I've been following the tutorial on w2schools (http://www.w3schools.com/php/php_ajax_database.asp) a

Confusing Functions
So, I've been reading up on Functions and I like them! However, I need some help using variables in

Doubles are giving me problems
Ok so, first of all i made a double = 0.05, but when running the debugger it shows up as 0.04999. I