Generate random hash string in PHP

random-hash-string-php.md

Generate random hash string in PHP

<?php
function randHash($len=32)
{
	return substr(md5(openssl_random_pseudo_bytes(20)),-$len);
}

Examples:

<?php
echo randHash()  .'<br>'; // c700f7b818a7e9e41e7d04cdf5ec8245
echo randHash(20).'<br>'; // 9bfae7b4cd0f1a3fa571
echo randHash(50).'<br>'; // f359dd85479999ea7632210e8c07158a NOTE: max length = 32

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private function randHash($len=64)
{
    return substr(hash('sha256', openssl_random_pseudo_bytes(20)),-$len);
}