Why is Executing Multiple INSERT Statements in One Query Not Recommended in PHP?

Executing Multiple MySQL INSERT Statements within a Single Query in PHP

The query provided in the question leverages the concatenation of multiple INSERT statements into a single string and then executing it using the mysql_query() function. While syntactically correct, this practice is inefficient and presents a potential security vulnerability.

Consider Multiple Value Insertion

As suggested in the answer, it is far more efficient to insert multiple values into a table with one INSERT statement. This can be achieved by using the following syntax:

INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...), (value1', value2', ...), ...;

For example:

INSERT INTO a VALUES (1,23), (2,34), (4,33), (8,26), (6,29);

Benefits of Multiple Value Insertion

• Improved performance: Executes a single query, reducing overhead.
• Guaranteed data integrity: Maintains data consistency when inserting rows simultaneously.
• Enhanced security: Prevents potential SQL injection vulnerabilities.

Conclusion

While executing multiple INSERT statements in one query is technically possible, it is not an optimal practice. By leveraging multiple value insertion, developers can ensure improved performance, data integrity, and security in their PHP applications that work with MySQL.

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