PHP variables are containers, which use to storing information.
A variable starts with the dollar sign ($) in PHP, then write the variable name.
Syntax -
<?php
$variable_name = "Hello Dear!";
echo $variable_name // to print
?>
Example 1
<!DOCTYPE html>
<head>
<title>Document</title>
</head>
<body>
<h4>PHP variables</h4>
<?php
$myfirstname = "sumit";
$mylastname="sarkar";
echo "$myfirstname"." "."$mylastname"
?>
</body>
</html>
Output
Example 2
<!DOCTYPE html>
<head>
<title>Teknowize</title>
</head>
<body>
<h4>PHP variables</h4>
<?php
$x = 5;
$y = 4;
echo $x + $y;
?>
</body>
</html>
Output
Example 3
<!DOCTYPE html>
<head>
<title>Document</title>
</head>
<body>
<h4>PHP variables</h4>
<?php
$firstname="sumit";
echo "$firstname"." dey" ." sarkar"
?>
</body>
</html>
Output