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P. 122
Unit 7: Functions
$person[“age group”] = “Old”; Notes
} else {
$person[“age group”] = “Young”;
}
}
print_r($people);
Again, this code makes use of the print_r() function.
The output of the previous code is the following:
Array
(
[1] => Array
(
[name] => Peter
[age] => 28
[age group] => Young
)
[2] => Array
(
[name] => Barbara
[age] => 67
[age group] => Old
)
)
You can see that both the Peter and Barbara arrays inside the $people array were added an
additional value with their respective age group.
7.8.7 Traversing Arrays Using List( ) and Each( )
Although foreach() is the nicer way of iterating over an array, an additional way of traversing
an array is by using a combination of the list( ) construct and the each( ) function:
$players = array(“Peter”, “Barbara”, “Bill”, “Nancy”);
reset($players);
while (list($key, $val) = each($players)) {
print “#$key = $val\n”;
}
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