.htacess

.htacess:

 its a file which define who can access web page content and who cannot from all over internet or intranet.

Example:

if i need that use not access directory so we can write following text in htacess file
option-Indexes

Function Return Values

In previous examples we just print the value from functions ,but if we need to do other tasks like need some results of calculations or some statements ,for this type of scenario in php we use return values in function Example:

<?php

// define a function for calculation

function calculate($val1,$val2,$opr) { 

   

if($opr=='add'){

return $val1+$val2;  // return value 

}

if($opr=='sub'){

return $val1-$val2;  // return value 

}

if($opr=='mul'){

return $val1*$val2;  // return value 

}

    

} 

//call a function where first two parameters values and other mention operation you need to perform

$result = calculate(2,5,'mul');  //multiply operation




echo $result; 

//print output 10
?>