How to generate random numbers in php

The method for php to generate random numbers is: It can be achieved by using the mt_rand() function, such as [mt_rand(10,100)], which means generating a random integer between 10 and 100. The mt_rand() function is a better choice for generating random values, returning results four times faster than the rand() function.

You can use the mt_rand() function to generate random numbers, which uses the Mersenne Twister algorithm to generate random integers.

Tip: This function is a better choice for generating random values, returning results 4 times faster than the rand() function.

Tip: If you want a random integer between 10 and 100, inclusive, use mt_rand (10,100).

Let’s take a look at the specific code:

function GetRandStr($length){
$str='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$len=strlen($str)-1;
$randstr='';
for($i=0;$i<$length;$i++){
$num=mt_rand(0,$len);
$randstr .= $str[$num];
}
return $randstr;
}
$number=GetRandStr(6);
echo $number;

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