From the course: Learning PHP
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Incrementing and decrementing variables - PHP Tutorial
From the course: Learning PHP
Incrementing and decrementing variables
- [Instructor] Arithmetic operators allow you to enumerate as needed. Perhaps you want to count the number rows in the table or create a numbered list. To increment based on what you know at this point, you would use the first line of code here. A get a plus one. This takes the variable a, adds one to it and reassigns the new value back to a, and the same goes for decrementing. You could say b gets b minus one. But there's a slightly shorter way that you can do this using a ++ or -- symbol. So the second line you see on the screen here, a++, would increment a by one. Similarly, b-- would decrement b by one. And you don't have to use these in just assignments either. You can add them to echo statements as well. Just bear in mind a few things. If you use this shorthand anywhere, including echo statements, the variable will still change values. So you can't simply say echo a++ and assume a retains its previous value.…
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