What are the best practices for retrieving the value of a specific column while inserting a new record in PHP?

When inserting a new record into a database table in PHP, you may need to retrieve the value of a specific column from another table to use in the new record. One common way to achieve this is by using a SELECT query to fetch the desired value before performing the INSERT query. This ensures that the necessary data is available before inserting the new record. 

// Connect to the database
$connection = new mysqli('localhost', 'username', 'password', 'database');

// Retrieve the value of a specific column from another table
$query = "SELECT column_name FROM other_table WHERE condition = 'value'";
$result = $connection->query($query);
$row = $result->fetch_assoc();
$specific_value = $row['column_name'];

// Insert a new record into the target table using the retrieved value
$insert_query = "INSERT INTO target_table (column1, column2, specific_column) VALUES ('value1', 'value2', '$specific_value')";
$connection->query($insert_query);

// Close the database connection
$connection->close();

Keywords

PHP MySQL SQL INSERT SELECT

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