Display number closest to desired value

[sphinx]

Hello,

 

I currently have a .txt file with numbers, and I want PHP to display the number closest to 1000.

 

What method would I use to go about doing this?

 

Thanks

[Pikachu2000]

Not enough information. What is the format of the file? What happens when 2 numbers are equally 'close' to 1000?

[scootstah]

Make the data into an array, then use asort() to sort it low-to-high, then use end() to get the last item in the array.

$array = range(1 ,997);

asort($array);

echo end($array);

[PFMaBiSmAd]

After you answer Pika's question, you would take the absolute value of the difference between the data and the target value, then find the value(s) with the smallest abs(difference).

[ManiacDan]

scootstah, that wouldn't really be helpful if some of the numbers were OVER the target number.

 

sphinx, I'm afraid your answer is "subtraction."  Loop through all the numbers, subtract from 1000, find the abs() of the result, and find the lowest difference.  Same way you'd do it by hand.