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Functions in PHP |
We can use a function in PHP to execute a specific task or a set of tasks. Function is used when a specific code is used again and again. It is better to keep the code inside a function and call the function to perform the same task. We can pass variables to a function and after processing the function will return the value to the main script. So a function is a set of or block of code to do a particular task. PHP has got many built-in functions for us to use. We will discuss on user defined functions here. Let us see how to define a function.
<?
function my_function($var1,$var2){
// Place to enter code here.
print "Value of first variable = $var1";
print "<br>";
print "Value of second variable = $var2";
}
/*The above lines are a declaration of a function which takes two inputs. We can call a function like this.
*/
my_function("first value", "Second value");
?>
You can see above we have kept the code inside a function and call it from our main script. Two variables we have passed to the function and displayed them using print command. Here print is a built-in function of PHP.
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