Page 268 - Computer Software Application TP - Volume 1

COMPUTER SOFTWARE APPLICATION - CITS

decbin($number): Converts a decimal number to a binary string.

dechex($number): Converts a decimal number to a hexadecimal string.
hexdec($hex_string): Converts a hexadecimal string to a decimal number.
Other Mathematical Functions:
pi(): Returns the value of pi.

deg2rad($number): Converts degrees to radians.
rad2deg($number): Converts radians to degrees.
fmod($x, $y): Returns the floating-point remainder of x divided by y.

TASK 8: Display random numbers
• Open the text editor
• Write the following codes
<?php
echo rand().”<br/>”;//returns a pseudo-random integer between 0 and getrandmax().
echo rand(5, 15). “<br/>”;//returns random number between 5 and 15 (inclusive)
var_dump(random_int(100, 999));
echo “<br/>”;
var_dump(random_int(-1000, 0));// Get a cryptographically secure, uniformly selected
integer function for situations requiring strong randomness.
echo “<br/>”;
$bytes = random_bytes(5);
var_dump(bin2hex($bytes));// Get cryptographically secure random bytes
?>
• Save the program in C:\Apache24\htdocs in a folder with .php extension
• Run the Apache services from windows services
• Open the browser and type the following address

http://localhost/foldername/
• Click the php file to run and verify the output

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CITS : IT & ITES - Computer Software Application - Exercise 53