PHP get largest number from 3 variables

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Return variable with the highest value?

I'm trying to come up with a simple way of finding the highest number out of 3 variables.

$1 = 100
$2 = 300
$3 = 200

out of those 3 variables, I want to set a new variable as the highest one ($2)

so:

$highest_number = 300
1

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4
Matt Williamson On BEST ANSWER
$highest_number = max($1, $2, $3);

OR

$values = array($1, $2, $3);
$highest_number = max($values);

Additional information can be found at the quickref for max