The function str_rot13() is a built-in function in php. This function accepts a string and shifts every alphabet present in the string by 13 places in the alphabet. The function leaves numeric and non-alphabetical characters untouched. By passing an encoded string as argument, the function will return the original string.
Syntax:
str_rot13 ( $string )
Parameter: This function accepts only a string parameter which can be observed from the above syntax. The description of the parameter is as follows.
- $string : This is the only mandatory parameter of the function. This parameter passes a string to the function which needs to be encoded.
Return Value: The function returns the encoded string.
Examples:
Input : $string = "Geeks for Geeks" Output : Trrxf sbe Trrxf Input : $string = "Trrxf sbe Trrxf" Output : Geeks for Geeks
Below program illustrate the str_rot13() function in PHP:
<?php echo str_rot13("Geeks for Geeks");
echo "\n";
echo str_rot13("Trrxf sbe Trrxf");
?> |
Output:
Trrxf sbe Trrxf Geeks for Geeks