Temperature Conversion
Main Lab 5 Page
When one in required to have a section of a page repeat itself with very little deviation, actually having that section repeat is a bit redundant and pointless. Which is why loops exist.
Like any programming language, PHP allows the use of various loops, such as for, foreach, while and do…while.
The most basic of these is the while loop. But enough of that, let's concentrate on the for loop.
The for loop includes setting a counter, which runs for a set number of intervals, and increments at every stage of the loop.
Below, one can see a for loop in action. Each row after the header is built using the loop. The Celsius values are built using a counter starting at −40°, and incrementing in 10° intervals. Each time the loop runs, it also runs the conversion into Fahrenheit: F = C × 9 ÷ 5 + 32
The loop continues until the Celsius value is no longer less than or equal to 100°. So basically, it stops after 100°.
| Celsius | Fahrenheit |
|---|---|
| -40° | -40° |
| -30° | -22° |
| -20° | -4° |
| -10° | 14° |
| 0° | 32° |
| 10° | 50° |
| 20° | 68° |
| 30° | 86° |
| 40° | 104° |
| 50° | 122° |
| 60° | 140° |
| 70° | 158° |
| 80° | 176° |
| 90° | 194° |
| 100° | 212° |
