Development of HTML and internet cannot be
separated from PHP. This is scripting language that's capable to handle
database management. Commonly, PHP is written in server side which hardly seems
from client user. In end user, PHP only appears as command to retrieve or give
content for website. The example of website with PHP is form, but this script
is also capable to replace some HTML lines to be more efficient. One important
matter is how developer specifying with array() to enhance capabilities of
website. The next section will show you some useful tips.
Creating
Simple Array and Values in PHP
- Simple array
PHP also has similar characteristic as other
programming languages. You can create variable for the next task or command.
One variable is assigned with one value or properties. However, it will be
tiresome to write tons of variables with just single characteristic at once.
Array is similar to arrangement of variables or you may call it as matrices
with one row. Of course, matrices are expanded version of array. Simple array
in PHP can be designed in single variables with more than two values.
Array involves Type Casting and Overwriting example.
Array can be written in specific syntax. There is $id = array("x1",
"x2", "x3"). As you can see x1, x2, and x3 are value. You
can replace it with general variable, for example car. After that, type any
brand of car in x1 until x3. Actually, there is infinite number of value, but
you need to define it properly when applying it into website development.
Array can be mixed integer and string keys.
Normally, array is arrangement in integer, not continuous number. Example of
integer is 1, 2, 3 etc. Integer is type of number without comma, but PHP only
takes integer for positive number. It starts from one to infinite number. As
you know, integer is number that can be counted.
- Using key
Key of array is certain number that associates with
its value. Indexed arrays without key are the simplest composition at all. Keys
define value to have specific number. For example, sedan is part of car then it
has 23 as the key.
Keys not on all elements mean only few of values
get the key as stated earlier. The variable consists of several values as many
as integer number. You can define each of values with keys or only few of them.
Accessing array elements is simple. Developers only
write PHP in server. Three layers are existed in website technology. There are
server, database, and end-user website. Majority of website are end-user
interface which interact with viewer directly. Those websites are stored in
server. Developer only changes minor part to make a change in end-user
interface. Sometimes, website is not for public, so end-user will turn into
client. Instead of writing every array in website, it will be better to put few
lines that refer to the whole PHP lines in server side. Database is a place
where contents and data are stored. PHP is one of languages with capability to
access, retrieve, and process database.
After accessing elements in array, the next thing
is to display value. Array dereferencing means value cannot refer to certain
variables. This might be possible when array has too many values. It is better
to define value in definite numbers to prevent dereferencing.
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