Why is my MySQL integer column storing incorrect values?

Inserting Incorrect Integer into MySQL

When inserting an integer into a MySQL database using an SQL query like the one provided:

$sql_query = "INSERT INTO users_info (steam64) VALUES ('$steam64')";

You may encounter an issue where the inserted integer differs from the one stored in the $steam64 variable.

Investigation

Debugging this issue involves verifying the value of $steam64 using var_dump or echo, which confirms the correct integer is stored. The difference lies in MySQL's integer storage limitations.

Solution

The maximum integer value MySQL can store in an int field is 2147483647. If the integer to be inserted exceeds this limit, it is truncated to fit, resulting in an incorrect value. To resolve this issue, change the data type of the steam64 field from int to bigint. This will allow storage of larger integers without truncation.

EXAMPLE

ALTER TABLE users_info MODIFY steam64 BIGINT;

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