当我尝试将旧 sql 切换到 sqli 时,有人可以告诉我为什么这不起作用:
$query = "SELECT * FROM `product_category`";
$result = mysql_query($query, $connect) or die("could not perform query: " . mysql_error());
$num_rows = mysql_num_rows($result);
for ($i=0; $i < $num_rows; $i++)
{
$ID = mysql_result($result,$i,"ID");
$name = mysql_result($result,$i,"name");
$description = mysql_result($result,$i,"description");
到:
$query = ("SELECT * FROM `product_category`");
$result = mysqli_query($connect, $query) or die("could not perform query");
$num_rows = mysqli_num_rows($result);
for ($i=0; $i < $num_rows; $i++)
{
$ID = mysqli_result($result, "ID");
$name = mysqli_result($result,$i,"name");
$description = mysqli_result($result,$i,"description");`
它一直给我一个错误:“ fatal error :调用未定义的函数 mysqli_result()”
最佳答案
不要使用这种代码。这是非常低效的。使用 mysqli_fetch_assoc()
代替:
while($row = mysqli_fetch_assoc($result)) {
$id = $row['ID'];
$name = $row['name'];
etc..
}
一个 SINGLE 数据库操作,而不是您尝试执行的 3+ 个。
关于php - fatal error : Call to undefined function mysqli_result(),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17707331/