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我正在嘗試連接到本地主機以獲取我所在的類。我一直無法解決我遇到的這些錯誤。任何人都可以幫忙嗎?這是代碼。面向對象的數據庫連接
class mymysqli {
public $db;
function connectdb ($hostname, $database, $mysqli_login, $mysqli_password){
$db=mysqli_connect ($hostname, $mysqli_login, $mysqli_password) or die ('There is an issue');
mysqli_select_db($database, 'conectdb');
return $db;
}
function selectRows ($query){
$resultSet=mysqli_query($query);
if(mysqli_num_rows($resultSet) > 0){
return $resultSet;
}
else{
return false;
}
}
}
$DBConnect = new mymysqli();
$db=$DBConnect->connectdb("localhost","nwtip","root","");
if($db){
$SQL = "SELECT color FROM colors ORDER BY color";
$rs = $DBConnect -> selectRows($SQL);
if ($rs){
$intcount=0;
while(mysqli_fetch_row($rs)){
echo mysqli_result($rs,$intcount,"color")."<br>";
$intcount++;
}
}
}
這些都是錯誤 警告:mysqli_select_db()預計參數1是mysqli的,在C給定的字符串:\瓦帕\ WWW \ inclass.php第10行
警告:mysqli_query()預計至少有兩個參數,第1行給出了C:\ wamp \ www \ inclass.php中的第1行
警告:mysqli_num_rows()需要參數1爲mysqli_result,在C:\ wamp \ www \ inclass.php中給出null在線15