Specifications

try to use whichever conditional will be most readable in your situation. You will acquire a feel

for this with experience.

Iteration: Repeating Actions

One thing that computers have always been very good at is automating repetitive tasks. If there

is something that you need done the same way a number of times, you can use a loop to repeat

some parts of your program.

Bob wants a table displaying the freight cost that will be added to a customer’s order. With the

courier Bob uses, the cost of freight depends on the distance the parcel is being shipped. The

cost can be worked out with a simple formula.

We want our freight table to resemble the table in Figure 1.7.

PHP Crash Course

HAPTER 1

PHP CRASH

COURSE

FIGURE 1.7

This table shows the cost of freight as distance increases.

Listing 1.3 shows the HTML that displays this table. You can see that it is long and repetitive.

LISTING 1.3 freight.html—HTML for Bob’s Freight Table

<html>

<body>

<tr>

<td bgcolor = “#CCCCCC” align = center>Distance</td>

</tr>

<tr>

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