calculate inches

[brem13]

trying to figure out how to calculate inches in php, or if that cant be done, how can i change my select statement to display inches in the drop down, but put the centemeter equivalent in the database, the calculation im talking about is something like > 4'6" & < 6'11'

$array_height1 = array('Any', "4'1"", "4'2"", "4'3"", "4'4" etc);
echo '<select name="height1">';
				foreach($array_height1 as $aheight1)
				{
					$selected = (($aheight1 == $height1) ? ' selected="selected"' : '');
					echo '<option value="'.$aheight1.'"'.$selected.'>'.$aheight1.'</option>';
				}//end for

would there be a way to do a  >4'6" & < 6'11" sort of thing tho

[shadiadiph]

mm i would say not but not sure either.

 

The logical way would be to save inches in centimeters and call it that way 1 inch is 2.54 centimeters.

 

I am pretty sure that 4'6" cannot be recognised as a number so do the math in centimeters.

[kenrbnsn]

This is basic math:

 

12 inches per foot.

2.54 centimeters per inch.

 

So 5'6" is (5 * 12) + 6

and that converted into cm is ((5 * 12) + 6) * 2.54

 

It's not any different in PHP.

 

Ken

[brem13]

i figured as much. is there a way using the code i have to show inches on the page but store centimeters in the database?

[teamatomic]

Why dont you just convert it to inches? then you can compare and when you want to display just divide by 12 and use the modulus.

 

$num=145;

$ft=floor($num/12);

$inch=$num%12;

echo "$ft'$inch\"";//12'1"

 

 

HTH

Teamatomic

[brem13]

ok, ill try that, ty

[shadiadiph]

set your array with keys as the value $array_height1 = array('0'=>'Any','124.46' => '4'1"'); 

 

 

 

foreach ($array_height1 as $array_height1value => $height) {

echo '<option value="'.$array_height1value.'">'.$height.'</option>';

}