Re: PHP 4.2.2 Float->Mysql addition problem

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Er - yes.
If you do conversion type you are correct. but in the example I showed I didn't...
If you run the code bellow you will see...

bcscale( 10 );
$a = 14.5;
$b = -14.5;
$c = bcadd( $a, $b );
if( $c )
{
    echo "true: c = ".$c."<br>";
} else
{
    echo "false: c = ".$c."<br>";
}

var_dump((bool) "0");

It's a common use to do if( $var ) and not if( (bool)$var )...

	Andy

Ford, Mike wrote:
On 03 February 2006 13:14, Andrei wrote:

Welcome,
Please note that using bc function variables will be of type string.
So a code working with numeric values like:

$a = 1;
if( $a )
{
     ...
}

it's ok but with bc functions:

$a = 14.5;
$b = -14.5;
$c = bcadd( $a, $b );
if( $c )
{
    ...
}

will not work as expected ( if( "0" ) is interpreted like a string
that is not null and so condition is interpreted as true.

Er - nope.  The string "0" is explicitly equivalent to FALSE -- see http://www.php.net/manual/en/language.types.boolean.php#language.types.boolean.casting

Cheers!

Mike

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