


How to Efficiently Convert Database Query Results to Key-Value Arrays Using PDO?
Oct 22, 2024 pm 08:31 PMAchieving Efficient Key-Value Array Conversion from Database Queries Using PDO
In database manipulation scenarios, extracting data from a table into an associative array often arises. For queries featuring a key-value structure, the traditional approach involves two steps: fetching the results into a flat array and subsequently iterating through it to construct the desired associative array.
Nevertheless, an alternative solution exists that directly returns the associative array from the database query. Using the PDO fetchAll method with the PDO::FETCH_KEY_PAIR constant, one can achieve this efficiently:
$q = $db->query("SELECT `name`, `value` FROM `settings`;"); $r = $q->fetchAll(PDO::FETCH_KEY_PAIR);
This solution eliminates the need for additional processing and significantly simplifies the code. Notably, its compatibility with PostgreSQL 9.1 and PHP 5.3.8 makes it a viable option for a wide range of applications.
The above is the detailed content of How to Efficiently Convert Database Query Results to Key-Value Arrays Using PDO?. For more information, please follow other related articles on the PHP Chinese website!

Hot Article

Hot tools Tags

Hot Article

Hot Article Tags

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

11 Best PHP URL Shortener Scripts (Free and Premium)

Working with Flash Session Data in Laravel

Simplified HTTP Response Mocking in Laravel Tests

Build a React App With a Laravel Back End: Part 2, React

cURL in PHP: How to Use the PHP cURL Extension in REST APIs

12 Best PHP Chat Scripts on CodeCanyon
