Show DevBest [PHP] Random String Generator

[cxdy]

I made a random string generator in PHP.
You can use this for things like passwords, file names, etc. Anything you can think of.
To change the length of the string, edit the 10 in $length on line one.
Enjoy.

The function:

function generateRandomString($length = 10) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, strlen($characters) - 1)];
    }
    return $randomString;
}

Then, if you ever want to call it,

echo generateRandomString();

 

[Ecko]

All it takes is one line:

echo substr(str_shuffle('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$'), 0, 10);

 

[Macemore]

All it takes is one line:

echo substr(str_shuffle('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$'), 0, 10);

Yeah but his is easier to read and easier to change for adding / removing characters and such

 

[cxdy]

All it takes is one line:

echo substr(str_shuffle('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$'), 0, 10);

Mine can be easily called multiple times whenever needed, as it's a function. You have to copy & paste yours. Set yours to a variable.

 

[LeChris]

Mine can be easily called multiple times whenever needed, as it's a function. You have to copy & paste yours. Set yours to a variable.

I prefer a function....js <3

 

[Ecko]

Yeah but his is easier to read and easier to change for adding / removing characters and such

Adding/removing characters would be done exactly the same...

Mine can be easily called multiple times whenever needed, as it's a function. You have to copy & paste yours. Set yours to a variable.

Or can just put it as a function:

function generateRandomString($length = 10) {
    return substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$"), 0, $length);
}

echo generateRandomString();

Although I wouldn't recommend either of these to be used for generating a random password.

 

[Markshall]

You don't even need to write '0123456789abc' etc etc, you can just do:

<?php
function generateRandomString($length=10) {
    return substr(str_shuffle(array_merge(range(0,9), range('a','z'), range('A', 'Z')), 0, $length);
}

echo 'Your random string is: ', generateRandomString();
?>

 

[cxdy]

You don't even need to write '0123456789abc' etc etc, you can just do:

<?php
function generateRandomString($length=10) {
    return substr(str_shuffle(array_merge(range(0,9), range('a','z'), range('A', 'Z')), 0, $length);
}

echo 'Your random string is: ', generateRandomString();
?>

Didn't know about range! Thanks.

 

[Ecko]

You don't even need to write '0123456789abc' etc etc, you can just do:

<?php
function generateRandomString($length=10) {
    return substr(str_shuffle(array_merge(range(0,9), range('a','z'), range('A', 'Z')), 0, $length);
}

echo 'Your random string is: ', generateRandomString();
?>

Or even better:

function generateRandomString($length = 10) {
return substr(str_shuffle(md5(time())), 0, $length);
}
echo generateRandomString();

But if you want to make it truly random, use /dev/urandom for Unix based systems