插入到mysql数据库中时int值更改-php

Question

I have a table in mysql with a field called "userId":

`userId` int(20) NOT NULL

Insert statement is:

$result = mysql_query("INSERT INTO users (userId, firstName, lastName, dateCreated) VALUES (".$me['userId'].", '".$me['first_name']."', '".$me['last_name']."', CURDATE()) ")or die(mysql_error());

The value of userId when echoed in php is 100000517980247, but when inserted it changes to 2147483647. When I insert it into a varchar field it's fine. This has to be something really simple but I searched around a bit and I'm just not seeing it.

Answer 1

MySQL ints are a signed 32bit integer. You're inserting a number that's far above the limit, so you're seeing the maximum possible integer, which is 2147483647.

Change the data type to bigint for a 64bit data type, which will handle your number.

Answer 2

You use the type INT. And you need to use type BIGINT.

http://dev.mysql.com/doc/refman/5.0/en/numeric-types.html