假设已经通过MySQLi扩展建立与数了据库的连接,连接对象是$mysqli。现在请写出代码:执行查询语句"SELECT * FROM student",然后输出查询结果的行数。 A: $result = $mysqli->query("SELECT * FROM student"); echo $mysqli->num_rows; B: $result = $mysqli->query("SELECT * FROM student"); echo $mysqli->$num_rows; C: $result = $mysqli->query("SELECT * FROM student"); echo $result->num_rows; D: $result = $mysqli->query("SELECT * FROM student"); echo $result->$num_rows;

查看是否开启mysqli扩展，需要查看_____配置文件。

在下列php.ini的配置项中，哪一项可以开启MySQLi扩展（） A: extension=mysql B: extension=mysqli C: extension=pdo_mysql D: extension=oracle

在PHP函数中，属于选择数据库函数的是（ ）。 A: mysqli_fetch_row B: mysqli_select_db C: mysqli_result D: mysqli_fetch_object

下面( )函数从结果集中取得一行记录，返回的只是数字索引数组。 A: mysqli_query B: mysqli_fetch_array C: mysqli fetch row D: mysqli fetch assoc

Experts say this may be _____________ the warming climate. A: as a result B: in result C: a result of D: a result

阅读下面程序 A: result=""； B: result=null C: result=number1 D: result=number2

【单选题】下面 C代码的输出结果是()。int answer,result;answer=100;result=answer-10;printf( “The result is %d” , result+5); A. The result is 90 B. The result is 95 C. The result is 10 D. The result is 100

.Her heart was slightly damaged ______her long illness. A: as a result B: as a result of C: result in D: result from

______, the bad thing has been turned in to a good one. A: As a result B: In result C: As a result of D: Result from