Page 118 - Open Soource Technologies 304.indd

Unit 7: Functions

[0] => Cleveland Notes

[1] => Loretta

[2] => Junior
)

)
Example: 2. Lets try displaying a single value from the array above:

echo “Is “ . $families[‘Griffin’][2] .
“ a part of the Griffin family?”;

The code above will output:

Is Megan a part of the Griffin family?
Arrays in PHP are implemented using hash tables, which means that accessing
a value has an average complexity of O(1).
7.8.1 Array ( ) Construct

Array( ) is one of the methods PHP provides to create and populate an array with data. It is
a PHP statement that takes your input and returns an array variable containing that input.
Although the general format never changes.

Syntax

An array can be created by the array( ) language construct. It takes as parameters any number
of comma-separated key => value pairs.

array( key => value
, ...

)

// key may only be an integer or string
// value may be any value of any type

Now that you have an idea of what an array( ) statement looks like, let’s look at how your earlier
syntax of an array can be stored as an array:

<?php
$val1 = “car”;

$mycar = array(0=>”cycle”,
1=>”byke”,

2=>$val1);

?>

LOVELY PROFESSIONAL UNIVERSITY 113