I am trying to generate a random password in php.
I found couple of solution for this .
solution 01
use strlen instead of count, because count on a string is always 1
I found couple of solution for this .
solution 01
use strlen instead of count, because count on a string is always 1
<?php
function randomPassword() {
$alphabet = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789";
$pass = array(); //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
for ($i = 0; $i < 8; $i++) {
$n = rand(0, $alphaLength);
$pass[] = $alphabet[$n];
}
return implode($pass); //turn the array into a string
}
echo randomPassword();?>
Solution 02
<?php
function generatePassword ($length = 8)
{
// start with a blank password
$password = "";
// define possible characters - any character in this string can be
// picked for use in the password, so if you want to put vowels back in
// or add special characters such as exclamation marks, this is where
// you should do it
$possible = "2346789bcdfghjkmnpqrtvwxyzBCDFGHJKLMNPQRTVWXYZ";
// we refer to the length of $possible a few times, so let's grab it now
$maxlength = strlen($possible);
// check for length overflow and truncate if necessary
if ($length > $maxlength) {
$length = $maxlength;
}
// set up a counter for how many characters are in the password so far
$i = 0;
// add random characters to $password until $length is reached
while ($i < $length) {
// pick a random character from the possible ones
$char = substr($possible, mt_rand(0, $maxlength-1), 1);
// have we already used this character in $password?
if (!strstr($password, $char)) {
// no, so it's OK to add it onto the end of whatever we've already got...
$password .= $char;
// ... and increase the counter by one
$i++;
}
}
// done!
return $password;
}
?>
solution 03
<?php
function generatePassword($length=9, $strength=0) {
$vowels = 'aeuy';
$consonants = 'bdghjmnpqrstvz';
if ($strength & 1) {
$consonants .= 'BDGHJLMNPQRSTVWXZ';
}
if ($strength & 2) {
$vowels .= "AEUY";
}
if ($strength & 4) {
$consonants .= '23456789';
}
if ($strength & 8) {
$consonants .= '@#$%';
}
$password = '';
$alt = time() % 2;
for ($i = 0; $i < $length; $i++) {
if ($alt == 1) {
$password .= $consonants[(rand() % strlen($consonants))];
$alt = 0;
} else {
$password .= $vowels[(rand() % strlen($vowels))];
$alt = 1;
}
}
return $password;
}
?>