pick the middle 5 numbers

[pagegen]

Hi guys,

 

I need to pick the middle five numbers from a range of numbers

 

example

 

$lowest number = 0;  // this will allways be 0

 

$highest_number = 10; // this can very from 1 to 10000

 

$selected_number = 5; // this can also very but it will allways be between 0 and highest number

 

the middles numbers from the above 3 varuables should be

3 4 5 6 7 --- the $selected_number number allways needs to be the middle number

 

 

// some of the issue we need to watch out for is, if hughest number is 4 then it should just go

1 2 3 4

 

 

 

 

Thank you guys

[upp]

you could use strlen() to get the number of numbers in the string, then calculate where the middle 5 would be

and use substr() to get the 5 numbers in the middle

[pagegen]

Hey mate

 

cheers for your help,

 

I am not looking in a string to get 5 numbers

 

I have 3 varuables

 

$highest

 

$lowest

 

$selected

 

and i need to basicly read

 

the middle from highest and lowest but they need to be reveloved around the $selected

 

all numbers

[aabid]

Hey mate

 

cheers for your help,

 

I am not looking in a string to get 5 numbers

 

I have 3 varuables

 

$highest

 

$lowest

 

$selected

 

and i need to basicly read

 

the middle from highest and lowest but they need to be reveloved around the $selected

 

all numbers

 

Please clarify what you want, if you want middle number then this formula will work,

( Sum of all numbers/number of numbers)

 

this will return the average number between those so called middle number....

[laffin]

Wrote this for a pagination routine awhile back

the variables needed

$range = Amount of numbers to display

$curpage = Current number

$pages = Highest Page count

 

        $midrange=intval(floor($range/2));
        $range_s=(($curpage-$midrange)<1?1:(($curpage+$midrange)>$pages?($pages-$range+1):$curpage-$midrange));
        $range_e=(($curpage+$midrange)>$pages?$pages:($curpage-$midrange<1?($range):$curpage+$midrange));

 

I love the trenary operator keeps me from using a bunch of if...elseif..else statements

[pagegen]

Wrote this for a pagination routine awhile back

the variables needed

$range = Amount of numbers to display

$curpage = Current number

$pages = Highest Page count

 

        $midrange=intval(floor($range/2));
        $range_s=(($curpage-$midrange)<1?1:(($curpage+$midrange)>$pages?($pages-$range+1):$curpage-$midrange));
        $range_e=(($curpage+$midrange)>$pages?$pages:($curpage-$midrange<1?($range):$curpage+$midrange));

 

I love the trenary operator keeps me from using a bunch of if...elseif..else statements

 

nice one mate,

 

I am currently doing the same thing haha, will test and let u knw how I got on

[pagegen]

Hi mate

 

can you please expalin a bit more on this code

 

$midrange=intval(floor($range/2));
$range_s=(($curpage-$midrange)<1?1:(($curpage+$midrange)>$pages?($pages-$range+1):$curpage-$midrange));
$range_e=(($curpage+$midrange)>$pages?$pages:($curpage-$midrange<1?($range):$curpage+$midrange));

 

my current function does this

 

for($page = 1; $page <= $maxPage; $page++) {
		   if ($page == $pageNum) {
			  $nav .= " $page "; // no need to create a link to current page
		   }
		   else {
				$nav .= " <a href=\"$query_string&page=$page\">$page</a> ";
		   } 
		}

 

but that just prints every single page to screen, where we only want to display the mid range

[laffin]

$midrange=intval(floor($range/2));         // find the middle of the range

// FInd the starting range
if(($curpage-$midrange)<1)    // If we subtract midrange from the current page, is it below page 1? 
  $range_s=1;    // Yes, well put the start at page 1 then
elseif(($curpage+$midrange)>$pages) // No, Well than If we add the midrange to the current page, are we above the highest page?
  $range_s=($pages-$range+1)    // Yes, well start at the lowest possible range than
else   $range_s=$curpage-$midrange; // No,  than go ahead subtract midrange from the current page

// find the ending range
if(($curpage+$midrange)>$pages)    // If we add the current page to our midrange, are we above the page count?
  $range_e=$pages;     // Yes, Well use the page count
elseif(($curpage-$midrange<1)    // No, Well than does the Lowest page invalid? 
  $range_e=$range;     // Yes, Well than use the Range instead of calculating
else   $range_e=$curpage+$midrange;   // No,  than go ahead add midrange to the current page

 

[pagegen]

nice one mate

 

works great

[laffin]

No probs, glad ya likes that piece of code Works like a dandy for me

as u can see why i love the trenary operator, it cut down the if...elseif...else block to one line. but that was a intermediate example of what it can do. some of my other trenary statements get nested 3 levels deep, setting variables along the way. it gets pretty crazy, so using the parens helps when making the trenary statements.