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PHP Functions with Return values

Posted: 02 Jan 2013 06:58 AM PST

PHP Functions - Return values
Functions can also be used to return values.

Example

<html>
<body>
<?php
function add($x,$y)
{
$total = $x + $y;
return $total;
}
echo "1 + 16 = " . add(1,16)
?>
<body>
</html>


The output of the code above will be:

1 + 16 = 17

php functions with multiple parameters

Posted: 02 Jan 2013 06:44 AM PST

PHP Functions - Adding parameters
Our first function (writeMyName()) is a very simple function. It only writes a static string.
To add more functionality to a function, we can add parameters. A parameter is just like a variable. You may have noticed the parentheses after the function name, like:
writeMyName(). The parameters are specified inside the parentheses.
Example 1
The following example will write different first names, but the same last name:

<html>
<body>
<?php
function writeMyName($fname)
{
echo $fname . " Refsnes.";
}
echo "My name is ";
writeMyName("Kai Jim");
echo "My name is ";
writeMyName("Hege");
echo "My name is ";
writeMyName("Stale");
?>
<body>
</html>
The output of the code above will be:
My name is Kai Jim Refsnes.
My name is Hege Refsnes.
My name is Stale Refsnes.

Example 2

The following function has two parameters:

<html>
<body>
<?php
function writeMyName($fname,$punctuation)
{
echo $fname . " Refsnes" . $punctuation . "
";
}
echo "My name is ";
writeMyName("Kai Jim",".");
echo "My name is ";
writeMyName("Hege","!");
echo "My name is ";
writeMyName("Ståle","...");
?>
<body>
</html>

The output of the code above will be:
My name is Kai Jim Refsnes.
My name is Hege Refsnes!
My name is Ståle Refsnes...



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