Arithmetic Operators - PHPWhat can you do without operators? Not much, if you're trying to do without them in a programming language, and PHP is no exception. On Monday, we barely had time to show you a long list of the operators in PHP. Today, we're going to show you what they do.
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You have been using most of the arithmetic operators since childhood. That and your fingers and toes. But don't worry; PHP is smarter than you. It's prettier than you. And according to some of the other programming languages, it really gets around. ASP is really jealous, but don't tell it I said so. Let's look at some examples. <html> <body> <?php $add = 1 + 0; $subtract = 2 - 1; $multiply = 1 * 1; $division = 2 / 2; $modulus = 5 % 2; echo $add; echo $subtract; echo $multiply; echo $division; echo $modulus; ?> </body> </html> The above code would print out all the values of our variables: 1 1 1 1 1 A Brief Note About My Dear Friend...The Modulus The majority of the tutorials I've read on PHP never really explained Modulus in simple terms and so I never knew what it did. Maybe I'm just an idiot. But if there are other idiots out there, then you are in luck, because I am going to put this in very simple terms. Modulus gives you the remainder in division. Period. If I divide 2 / 2, there is no remainder. If I divide 3 /7 there is a remainder of 1. Modulus would return that 1.
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