At 9:51 PM -0500 7/6/07, Kenn Murrah wrote:
Can anyone help me with a way to determine of two or more variables
have the same value? For instance,
$a1 = 1000
$a2 = 2000
$a3 = 2000
$a4 = 4000
$a5 = 5000
I want check these five variables and determine whether, as in this
case, two or more of the variables have the same value.
Any suggestions how I can do this?
Thanks in advance.
kenn
kenn:
You could use an array.
$a = array(1000, 2000, 2000, 4000, 5000);
$num_before = count($a);
$num_after = count(array_unique($a));
If two, or more, variables have the same value, variables $num_before
and $num_after will be different.
Cheers,
tedd
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