sha256 해쉬체크

1. 텍스트문구 해쉬체크
<?php
$txt = "12345678";
$hash = mhash(MHASH_SHA256, $txt);
echo bin2hex($hash);
?>

2. 파일 해쉬체크
<?php
function getHashNotWorking($argStrHashMethod, $argStrString)
{
 $strHashMethod = 'MHASH_' . $argStrHashMethod;

 $fd = fopen ($argStrString, "r");
 while (!feof ($fd)) {
  $buffer .= fgets($fd, 4096);
 }
 fclose ($fd);

 $strHashedString = bin2hex(mhash(constant($strHashMethod), $buffer));

 return $strHashedString;
}

echo getHashNotWorking('SHA256', $argStrString);
?>