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?

101 Like 14 Dislike
Previous php-forum Next php-forum
Other php-forum

Help Optimizing code
Good Morning,

I wrote a small import function for a website of mine and I know there has to b

Members Only
Hi all, for my website i have a members area only which on members can veiw, but at the moment anyon

md5 is it unique
I know this is most likely one of many simple questions that can be found semi easily. But I'm press

Session login issue
I'm wondering how to fix a problem I'm having with a session-based login system

Say I go to h

Auto fill in input value based on User_ID
Hello,

I'm looking form some input on the following problem.

User loads page ->

SELECT * FROM users WHERE Users are not in Blocked
How do I select all users from users table where there users_id is not stored in the block table

Transform value 0 in no and 1 in yes help needed
Hello,
I have this in the table: "value" type int 0 to represent false and 1 to represe

Email Form Syntax Issue
I need the TO: in email to display To: CEO instead of To: abc@mail.com

How to alter the scri

Trying to add functions to table
I have this list of characters and I'm trying to figure out what I have to do to put the results of

Problem with "dynamic" index page
Hi. I have one question. In my index.php page I have this kind of code:
Code: // listaa sivut

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash