PHP Functions
A PHP function is a block of statements that can be used repeatedly in a program. It is not executed when page is loaded, instead implemented when a function is called.
Function Syntax
Function function _name ()
{
Code to be executed;
}
Example
Function test()
{
Echo “hello”;
}
Test();
Function with arguments
Arguments or parameters are a piece of information, which is passed to function for executing the code. Functions can have any number of arguments, just separate them by comma.
Function test($fname)
{
Echo $fname;
}
Test(“janani”);
Default Argument Value
The default argument will be set, if a function is called without parameters.
Function test($fname=50)
{
Echo $fname;
}
Test();
Return value function
Return value function is used when a function has to return a value after code execution.
Function test ($a, $b)
{
Return $a+$b;
}
Echo Test(2,3);
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