function get_hash_table( $table , $userid ) |
{ |
$str = crc32( $userid ); |
|
if ( $str < 0) { |
$hash = "0" . substr ( abs ( $str ), 0, 1); |
} else { |
$hash = substr ( $str , 0, 2); |
} |
return $table . "_" . $hash ; |
} |
echo get_hash_table( 'message' , 'user18991' ); //结果为message_10 |
echo get_hash_table( 'message' , 'user34523' ); //结果为message_13 |