php function

Tue Oct 07, 2008 11:46 pm

A function is a pace of code that can be executed multiple times in your system .When you need this block of code just call it .

Creating your first php function
you use the keyword to define the php function. you can see this in the following example :

Code:: <?php function myfunction() { // function body }

Note: Your function name can start with a letter or underscore "_", but not a number!

Using php function

here an example of using php function

Code:: <?php function showme() { echo "My name is johan"; } echo "Welcome to our website "; showme();

the output of this code :

Code:: Welcome to our website My name is johan

Using parameters :

Code:: <?php function showme($name) { echo "My name is $name"; } echo "Welcome to our website "; $username="johan"; showme($username); showme("Tom");

the ouput is :

Code:: Welcome to our website My name is johan My name is Tom

Return values from parameter :

Code:: <?php function sum($x,$y) { $sum=$x+$y; return $sum; } echo " sum of 1 and 4 is : ". sum(1,4) ;

the output is :

Code:: sum of 1 and 4 is : 5

Thank you

php function

php function

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