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Chapter 24 of 38

MySQL with mysqli

Connect, prepare, bind, fetch, transact, and close MySQL operations safely.

44 minutes 10 quick checksBy Subha Prasad
Lesson 24 of 38Course navigation

Lesson content

Read, practise, then check your understanding

mysqli is MySQL-specific and offers object-oriented and procedural APIs. Enable exception reporting, set charset, and use prepared statements.

Practical example

<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$db = new mysqli($host, $user, $password, $name);
$db->set_charset('utf8mb4');
$stmt = $db->prepare('SELECT name FROM users WHERE id = ?');
$stmt->bind_param('i', $id); $stmt->execute();

Transactions group related writes with commit/rollback. Bound values cannot represent SQL identifiers, so allowlist dynamic columns/directions. Use least-privileged database accounts, bounded result sets, timeouts, and centralized connection configuration.

Knowledge check

Answer every question correctly to complete this chapter.

Which statement best describes mysqli?
Which PHP term matches this description: A MySQL-specific extension with procedural and object-oriented APIs.
Which statement best describes prepared statement?
Which PHP term matches this description: A compiled SQL template with separately bound values.
Which statement best describes bind_param?
Which PHP term matches this description: mysqli binding of typed input parameters.
Which statement best describes result set?
Which PHP term matches this description: Rows returned from a database query.
Which statement best describes transaction?
Which PHP term matches this description: A group of operations committed atomically or rolled back.

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