What are the potential pitfalls of manually counting the entries in a table to determine the ID of a newly created entry?

Manually counting entries in a table to determine the ID of a newly created entry can lead to errors and inconsistencies, especially in a high-traffic environment where multiple entries are being added simultaneously. To avoid this, it is recommended to use an auto-incremented primary key column in the database table to ensure each entry is assigned a unique ID automatically. 

// Assuming you have a table named 'entries' with an auto-incremented primary key column named 'id'

// Insert a new entry into the table
$query = "INSERT INTO entries (column1, column2) VALUES ('value1', 'value2')";
$result = mysqli_query($connection, $query);

// Get the ID of the newly created entry
$new_entry_id = mysqli_insert_id($connection);

echo "The ID of the newly created entry is: " . $new_entry_id;

Keywords

SQL injection race conditions concurrency issues data inconsistency security vulnerabilities

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