echo "Surnametn";
echo "First name:tnn";
}
?>
函数 mysql_fetch_array() 把查询结果的一行放入数组,可以同时用两种方式引用,例
如 cust_id 可以同时用下面两种方式:$row["cust_id"] 或者$row[0] 。显然,前者的可读性
要比后者好多了。
在多表连查中,如果两个列名字一样,最好用别名分开:SELECT winery.name AS
wname,
region.name AS rname,
FROM winery, region
WHERE winery.region_id = region.region_id;
列名的引用为:$row["wname"]
和 $row["rname"]。
在指定表名和列名的情况下,只引用列名:
SELECT winery.region_id
FROM winery
列名的引用为: $row["region_id"]。
聚集函数的引用就是引用名:
SELECT count(*)
FROM customer;
列名的引用为: $row["count(*)"]。
4.
注意常见的 PHP bug
常见的 PHP 纠错问题是:
No page rendered by the Web browser when much more is expected
A pop-up dialog stating that the "Document Contains No Data"
A partial page when more is expected