PHP tutorial-Function
PHP Function
A function that does not return a value
function function_name(){
statements;
}
Note: the name of function must start with a letter or underscore not a number
Example:
<html>
<body>
<?php
//defining function:printHello
function printHello(){
echo "Hello";
}
//calling the function:printHello
printHello();
?>
</body>
</html>
A function that returns a value
function function_name(){
statements;
return value;
}
Example:
<html>
<body>
<?php
//defining function: sum
function sum(){
$s=10+20;
return $s;
}
//calling the function: sum
$total=sum();
echo "Total=".$total;
?>
</body>
</html>
Function parameters
Parameters are values to be passed to the function.
Example:
<html>
<body>
<?php
//defining function:printName
function printName($name){
echo "Hello ".$name;
}
//calling the function:printName
printName("Khorn Channa");
?>
</body>
</html>
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