PHP Data Type
Subject: Web development using PHP and MySQL
Variables can store or hold data of different types such as String, Integer, Float or double, Boolean, Array.
String is a sequence of characters or any text inside single or double quotes.
Example 1
<![CDATA[
<?php
$name="Ben Onuorah";
$msg="Welcome to my site";
print "$name <br/> $msg";
?>
]]>
Integer data type is a non-decimal number between -2,147,483,648 and 2,147,483,647.
Example 2
<![CDATA[
<?php
$price=15000;
?>
]]>
Float is a number with a decimal point or in exponential form.
Example 3
<![CDATA[
<?php
$discount=50.5;
?>
]]>
Boolean represents two (true or false) states.
Example 4
<![CDATA[
<?php
$even_number=true;
?>
]]>
Array is use to stores multiple values in one variable for easy access and manipulation.
Example 5
<![CDATA[
<?php
$ng_states = array("Anambra","Edo","Kaduna","Lagos");
?>
]]>
What is my variable data type?
var_dump() can be use to know the data type of a variable
Example 6
<![CDATA[
<?php
//array holding student name, age, height, married
$student = array(“Benâ€, 35, 5.6, true);
//var_dump() function returns data type and value
var_dump($student);
?>
]]>
By:
Benjamin Onuorah
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