


PHP `bind_result()` vs. `get_result()`: Which Method Should I Use for Database Queries?
Bind_result vs Get_result in PHP: When to Use Each
Introduction
In PHP, both bind_result() and get_result() are used to retrieve data from a database query. While both methods serve the same purpose, they differ in their implementation and have their own advantages and disadvantages.
Bind_result()
- Purpose: Explicitly binds variables to the columns returned by a query.
- Format: Requires the explicit listing of column names in the query, and assigns returned values to variables.
- Example:
$query = 'SELECT id, first_name, last_name FROM table WHERE id = ?'; $stmt->bind_result($id, $first_name, $last_name);
Pros:
- Works with older PHP versions
- Provides separate variables for each column
Cons:
- Requires manual listing of all variables
- More complex code for returning row as an array
- Needs to be updated manually when table structure changes
Get_result()
- Purpose: Returns the query result as an associative/enumerated array or object, with columns automatically assigned to array keys/properties.
- Format: Retrieves the result and iterates over it using fetch_assoc() or fetch_object().
- Example:
$result = $stmt->get_result(); while ($row = $result->fetch_assoc()) { echo $row['id'] . ' ' . $row['first_name'] . ' ' . $row['last_name']; }
Pros:
- Provides associative/enumerated arrays or objects automatically
- Allows fetch_all() to return all rows at once
Cons:
- Requires MySQL native driver (mysqlnd)
Limitations and Differences
- Bind_result() requires explicit column listing, while get_result() infers columns from the query.
- Get_result() is only available with the mysqlnd driver, while bind_result() is supported by both mysqlnd and libmysqlclient.
- Get_result() automatically handles associative arrays or objects, simplifying code.
Conclusion
The choice between bind_result() and get_result() depends on the specific requirements of the application. If separate variables are required or outdated PHP versions are used, bind_result() is a suitable option. For automated array/object handling and more streamlined code, get_result() should be used, provided mysqlnd is available.
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