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Operators are special symbols in PHP that are used to perform arithmetic or logical
computation. The variables of values used with the variables are known as operands. The
combination of operators and operands is called an expression. There are various types of
operators, which are as follows:
Arithmetic operators: These operators are used to do basic mathematical calculations. The
arithmetic operators of PHP are +, -, *, /, and %. Let us create a PHP script to use some of the
arithmetic operators.
<HTML>
<HEAD> <TITLE> Using Variables </TITLE> </HEAD>
<BODY>
<?php
$a = 10;
Use of + operator
$b = 5;
Use of - operator
echo "The sum of two numbers is ", $a+$b;
echo "<br>The difference of two numbers is ", $a-$b;
echo "<br>The product of two numbers is ", $a*$b;
?> Use of * operator
</BODY>
</HTML>
Note that the <br> tag is used to print the text in next line. We get the following output by
executing the preceding script:
Relational operators: These operators help to compare quantities and return Boolean value
'True' or 'False' as the output. Relational operators of PHP are ==, !=, >, <, >=, and <=. Let us create
a PHP script to use some of the relational operators.
<HTML>
<HEAD> <TITLE> Using Variables </TITLE> </HEAD>
<BODY>
<?php
$a = 10;
$b = 5;
Techipedia (PHP) 167
