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

http to https
Hi,

Is there any specific method/condition to move an http:// page to https:// ?

A href problem under php
Hello...

I tried to explain the issue in an earlier post.. but was not clear enough....

button.click += new eventhandler() not works in if(!ispostback)
i want to use button.clcik event in function VIewScrap() which is called in if(!ispostback) but itdo

include problem
I have my root folder as:
Code: $root = $_SERVER["SITE_HTMLROOT"]; // the server root<

need help in update query
hi
i have a dynamic form. i need help in how can i use update query when values from dynamic for

tell csv import script to ignore blank rows?
Hi i have the below script but i get an error if a row is blank ie a return in the csv file at the e

my sql select id and then update problem.
I need to select some auto incremented ids out of a database and then use those id in a where statem

PHP & Java
Hello,

can PHP code be used inside java code?

Code: <SCRIPT LANGUAGE="Java

User feedback after MySQL query has been executed
Hi all, I've just registered on PHPFreaks because I've got a question that I simply can't work out b

Windows Authentication
I have a website which is windows authenticated.
now i want something more on this application.<