PHP generates a secure random password program

PHP generates a random password, easy and fast, can randomly generate a secure and reliable password, I hope this article will be helpful to everyone.

PHP generates a secure random password program instance code as follows:

<?php

Header ("Content-type:text/html;charset=utf-8");

function Getrandpass ($length = 6) {

$password = ";

Add the characters you want to the following string, which is the number 0-9 and the 26 English letters by default

$chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

$char _len = strlen ($chars);

for ($i =0; $i < $length; $i + +) {

$loop = Mt_rand (0, ($char _len-1));

Take this string as an array, randomly take out a character, and loop it into the number of bits you need.

$password. = $chars [$loop];

}

return $password;

}

Echo Getrandpass (12); Randomly generate a 12-digit password

Open Source Code phpfensi.com

?>

Example 2, with the first one a little like

1. Preset a string $chars, including a–z,a–z,0–9, and some special characters

2. Randomly take a character in a $chars string

3, repeat the second step n times, can get the length of the password of n

The instance code is as follows:

function Generate_password ($length = 8) {

Password character set, you can add any character you need

$chars = ' abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&* ()-_ []{}<>~ ' +=,.;:/?| ';

$password = ";

for ($i = 0; $i < $length; $i + +)

{

Here are two ways to get a character

The first is to use SUBSTR to intercept any one character in the $chars;

The second type is to take any element $chars the character array

$password. = substr ($chars, Mt_rand (0, strlen ($chars)-1), 1);

$password. = $chars [Mt_rand (0, strlen ($chars)-1)];

}

return $password;

}

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