Variables in php
Php variables start with the symbol $ followed by the name of the variable
eg: $jino, $cspsyco, $php etc.
Actually we did not need to declare a variable before using it. If we want to declare any values to a variable then we must declare it at anywhere in the program.
We can declare a numeric value or a string value at the time of declaration. String values should be declared within double quotes.
output is Hello World
Here both of the echo will produce same output. We can set the variable for printing the output in these given two ways.
We can also perform operations using these variables.
Concatenation of two strings
Strings in php can be concatenated using the period symbol(.). This will append two strings together.
eg: $jino, $cspsyco, $php etc.
Actually we did not need to declare a variable before using it. If we want to declare any values to a variable then we must declare it at anywhere in the program.
Declaring a variable in php
We can declare a numeric value or a string value at the time of declaration. String values should be declared within double quotes.
<html>
<head>
</head>
<body>
<?php
$a="Hello World";
echo "output is $a\n";
echo "output is".$a;
?>
</body>
</html>
Output
output is Hello Worldoutput is Hello World
Here both of the echo will produce same output. We can set the variable for printing the output in these given two ways.
We can also perform operations using these variables.
<html>
<head>
</head>
<body>
<?php
$a=2;
$b=3;
echo $a+$b;
?>
</body>
</html>
Output
5Concatenation of two strings
Strings in php can be concatenated using the period symbol(.). This will append two strings together.
<html>
<head>
</head>
<body>
<?php
$a="Hello";
$b="World";
echo $a.$b;
?>
</body>
</html>
Output
Hello World⇐Prev
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