A set of specific program and source code which complete a specific task is function.
Function separates the complexity of a large program and provides a
modular approach. There are two type of function user define function
and library function. Now focus on user defines function and try to
Syntex of PHP function :
code to be executed;
Complete Example of PHP Function
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function star() //no parameter
echo "*"; //no return value
star(); //function call but no argument
function reverse($num) //parameter receive
echo "Out put in function"."<br>";
//function no return .
reverse($number); //argument passing
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