当我试图将旧的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");
至:
$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,$i,"description");`
它一直给我一个错误:“致命错误:调用未定义的函数MysqLi_result()”
解决方法:
不要使用这种代码.这是非常低效的.使用MysqLi_fetch_assoc()代替:
while($row = MysqLi_fetch_assoc($result)) {
$id = $row['ID'];
$name = $row['name'];
etc..
}
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