我正在将我的 PHP 代码从 mysql
(在 5.5 中弃用)迁移到 PDO_MySQL
.但是,mysql_fetch_row
返回整数,而 PDOStatement::fetch
返回数字字符串.我怎样才能让 PDO 表现得像前者一样?
I'm migrating my PHP codes from mysql
(deprecated in 5.5) to PDO_MySQL
. However, mysql_fetch_row
returns integer while PDOStatement::fetch
returns strings for numbers. How can I make PDO behaves like the former one?
mysql_fetch_row
的结果:
array(1) {
["id"]=>
int(1)
}
PDOStatement::fetch
的结果:
array(1) {
["id"]=>
string(1) "1"
}
将 PDO::ATTR_EMULATE_PREPARES
设置为 false,如果您确实需要使用松散类型的 PHP
Set PDO::ATTR_EMULATE_PREPARES
to false, if you really need it with loosely-typed PHP
如果 mysql_fetch_row
为 SUM 返回 int 或者(我从不关心检查) - 那么它会做一些魔术,比如 if (ctype_digit($val)) $row[$key] =(int)$val;
- 所以你可以在你的 DBAL 中做
If mysql_fetch_row
returns you int for SUM either (I never cared to check) - then it does some magic like if (ctype_digit($val)) $row[$key] = (int)$val;
- so you can do in your DBAL
据我了解准备语句的工作方式,它使用相同的数据包结构来发送和检索数据,并且该数据包包含数据类型.
As far as I understand the way prepared statements works, it uses the same packet structure for either sending and retrieving data, and this packet contains data type.
看起来那个服务器可以返回两种格式的数据——native 和 mysqlnd,这取决于请求类型.后一个可以被客户端库解释为转换结果值.
It looks like that server can return data in 2 formats - native and mysqlnd, depends on the request type. A latter one can be interpreted by client library to cast resulting value.
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