Here's the code:
<?php
$a = 676.6;
$b = 0.175;
$y = $a * (1 + $b);
echo("y: " . $a . " * (1 + " . $b . ") = $y<BR>");
$z = $a + ($a * $b);
echo("z: " . $a . " + ( " . $a . " * " . $b . ") = $z<BR>");
echo("number format(y)=".number_format($y, 2)."<BR>");
echo("number format(z)=".number_format($z, 2)."<BR>");
?>
Here's the output:
y: 676.6 * (1 + 0.175) = 795.005
z: 676.6 + ( 676.6 * 0.175) = 795.005
number format(y)=795.01
number format(z)=795.00
In other words, using two logically equivalent (?) formulae to derive
exactly the same result from the same two values results in somehow
different results (I guess it's not an issue with number_format() per se,
but with associativity or summat...).
Hope it's not an obvious schoolboy error - any ideas?
PHP 4.2.2
Apache 2.0.40
Redhat 7.3
-------------------------------------------------------
Paul Hopkins - Senior Web Developer, Doctor Net - http://www.doc-net.com/
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