Is mysql_real_escape_string() Still a Safeguard Against SQL Injection?

Is mysql_real_escape_string() Vulnerable to SQL Injection?

Concerns have been raised regarding the effectiveness of mysql_real_escape_string() in preventing SQL injection. Some older articles suggest that this function may have flaws.

Can mysql_real_escape_string() Be Safely Used?

The answer to this question lies in understanding the function's limitations. According to the MySQL C API documentation:

If you need to change the character set of the connection, you should use the mysql_set_character_set() function rather than executing a SET NAMES (or SET CHARACTER SET) statement. mysql_set_character_set() works like SET NAMES but also affects the character set used by mysql_real_escape_string(), which SET NAMES does not.

Therefore, to ensure maximum security, it is crucial to use mysql_set_charset() to change the encoding, rather than SET NAMES/SET CHARACTER SET. This is because mysql_set_charset() aligns with MySQL's mysql_set_character_set() function, which affects the character set used by mysql_real_escape_string().

By following these guidelines, you can effectively use mysql_real_escape_string() to protect your queries from SQL injection.

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