This is my first php program!

Flow-Control Statements
|
53
This program adds the numbers from 1 to 10 using a
for
loop:
$total = 0;
for ($i= 1; $i <= 10; $i++) {
$total += $i;
}
Here’s the same loop using the alternate syntax:
$total = 0;
for ($i = 1; $i <= 10; $i++):
$total += $i;
endfor;
You can specify multiple expressions for any of the expressions in a
for
statement by
separating the expressions with commas. For example:
$total = 0;
for ($i = 0, $j = 0; $i <= 10; $i++, $j *= 2) {
$total += $j;
}
You can also leave an expression empty, signaling that nothing should be done for
that phase. In the most degenerate form, the
for
statement becomes an infinite loop.
You probably don’t want to run this example, as it never stops printing:
for (;;) {
echo "Can't stop me!
";
}
In
for
loops, as in
while
loops, you can use the
break
and
continue
keywords to end
the loop or the current iteration.
foreach
The
foreach
statement allows you to iterate over elements in an array. The two forms
of
foreach
statement are discussed in Chapter 5. To loop over an array, accessing
each key, use:
foreach (
$array
as
$current
) {
// ...
}
The alternate syntax is:
foreach (
$array
as
$current
):
// ...
endforeach;
To loop over an array, accessing both key and value, use:
foreach (
$array
as
$key => $value
) {
// ...
}
,ch02.15294 Page 53 Wednesday, March 13, 2002 11:42 AM

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