PHP Random Number / String Generator

In PHP Random Number Generator, I have explained how to Generate a random number with in a range / Generate a random string with given length.In PHP,  we can use rand() function to generate random number. using this function we can make random string also.

PHP rand() Syntax:

//Generates random number
int rand(void);

//Generate random number in range from $min , to $max (inclusive)
int rand($min,$max);

1).PHP Random Number

$rand_value =rand();
echo $rand_value."n";

2).PHP Random Number in a Range(10..100)

$rand_value = rand(10,100); //generates a number from 10 to 100
echo $rand_value."n";

3).PHP Generate Random String

function gen_random_string($length=16)
{
	$chars ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890";//length:36
	$final_rand='';
	for($i=0;$i<$length; $i++)
	{
		$final_rand .= $chars[ rand(0,strlen($chars)-1)];

	}
	return $final_rand;
}

echo gen_random_string()."n"; //generates a string
echo gen_random_string(8)."n"; //generates a string with length 8

4).PHP Generate random number with given length

function gen_random($length=32)
{
	$final_rand='';
	for($i=0;$i< $length;$i++)
	{
		$final_rand .= rand(0,9);

	}

	return $final_rand;
}
echo gen_random(10)."n";//random number with length 10
echo gen_random()."n";//random number with length 32

Reference: PHP Documentation