30 lines
888 B
PHP
30 lines
888 B
PHP
<?php
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function gen_rand_shortlink($len) {
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$to_return = '';
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$possible_chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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while (mb_strlen($to_return) < $len) {
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$to_return = $to_return . $possible_chars[rand(0, mb_strlen($possible_chars)-1)];
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}
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return $to_return;
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}
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function gen_base62_rand_shortlink($len) {
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$rand_bytes = random_bytes(intval(($len * 2) / 3));
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$rand_string = base64_encode($rand_bytes);
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$rand_string = str_replace("+","",$rand_string);
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$rand_string = str_replace("/","",$rand_string);
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$rand_string = str_replace("=","",$rand_string);
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if (mb_strlen($rand_string) < $len) {
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$curlen = mb_strlen($rand_string);
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$rand_string = $rand_string . gen_rand_shortlink($len - $curlen);
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}
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return $rand_string;
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}
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?>
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