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Added random string generation functions to a separate file

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Aadhavan Srinivasan
2023-09-06 22:00:23 -05:00
parent da6069c88a
commit 3bce00440e
1 changed files with 29 additions and 0 deletions
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29
rand_string.inc.php Normal file
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@@ -0,0 +1,29 @@
<?php
function gen_rand_shortlink($len) {
$to_return = '';
$possible_chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
while (mb_strlen($to_return) < $len) {
$to_return = $to_return . $possible_chars[rand(0, mb_strlen($possible_chars)-1)];
}
return $to_return;
}
function gen_base62_rand_shortlink($len) {
$rand_bytes = random_bytes(intval(($len * 2) / 3));
$rand_string = base64_encode($rand_bytes);
$rand_string = str_replace("+","",$rand_string);
$rand_string = str_replace("/","",$rand_string);
$rand_string = str_replace("=","",$rand_string);
if (mb_strlen($rand_string) < $len) {
$curlen = mb_strlen($rand_string);
$rand_string = $rand_string . gen_rand_shortlink($len - $curlen);
}
return $rand_string;
}
?>