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[SOLVED] Outputting 2.00 and 1.30, rather than 2 and 1.3


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This converts fractions to decimals, rounded to two decimal places. But with fractions like 8/2 or 21/10, the outputs are 4 and 2.1, whereas I need 4.00 and 2.10. Need two decimal places always.

 

$numerator = 8;       // say
$denominator = 2;    // say 
$output = round ( ($numerator/$denominator) , 2 );
echo $output;

 

This outputs 4, but I need 4.00. I can get this done indirectly:

 

$array = explode( "." , $output );
$n = strlen( $array[1] );
if( $n == 0 ){ $output = $output . ".00"; }
elseif( $n == 1 ){ $output = $output . "0"; }
elseif($n == 2 ){ }

echo $output;

 

But this strikes me as being totally ridiculous. Is there a straightforward function I could use to ensure that output is always expressed to two decimal places? Numerator and denominator will vary, but are always positive integers.

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