PHP MYSQL 分表方法

function get_hash_table($table,$uid){

    $_str = crc32($uid);

    if($_str < 0 ){

        $ret = "0".substr(abs($_str),0,1);

    }else{

        $ret = substr($_str,0,2);

    }

    return $table."_".$ret;

}

 

  

echo get_hash_table('test','user1');  //test_01

echo get_hash_table('test','ddddaaaa'); //test_10

调用方式 "select * from ".get_hash_table('user', $uid)." where userid = '{$uid}'";