MindMap Gallery PHP Database Operations Diagram
Discover the essentials of PHP database operations with a clear comparison between MySQLi and PDO. This guide covers key topics including database APIs, connection methods, core CRUD operations, prepared statements, error handling, transactions, result handling, security best practices, and deployment considerations. Learn when to choose MySQLi for MySQL-specific features and PDO for database portability and a unified API. Understand connection setups, parameter binding techniques, and strategies to ensure secure and efficient database interactions. Whether building MySQL-focused applications or aiming for flexible database support, this overview provides a concise roadmap for effective PHP database programming.
Edited at 2026-03-25 13:44:38Join us in learning the art of applause! This engaging program for Grade 3 students focuses on the appropriate times to applaud during assemblies and performances, emphasizing respect and appreciation for performers. Students will explore the significance of applauding, from encouraging speakers to maintaining good audience manners. They will learn when to applaudsuch as after performances or when speakers are introducedand when to refrain from clapping, ensuring they don't interrupt quiet moments or ongoing performances. Through fun activities like the "Applause or Pause" game and role-playing a mini assembly, students will practice respectful applause techniques. Success will be measured by their ability to clap at the right times, demonstrate respect during quiet moments, and support their peers kindly. Let's foster a community of respectful audience members together!
In our Grade 4 lesson on caring for classmates who feel unwell, we equip students with essential skills for handling such situations compassionately and effectively. The lesson unfolds in seven stages, starting with daily preparedness, where students learn to recognize signs of illness and the importance of communicating with adults. Next, they practice checking in with a classmate politely and keeping them comfortable. Students are then guided to inform the teacher promptly and offer safe help while waiting. In case of serious symptoms, they learn to seek adult assistance immediately. After the situation is handled, students reflect on their actions and continue improving their response skills for future incidents. This comprehensive approach fosters empathy and responsibility in our classroom community.
Join us in Grade 2 as we explore the important topic of keeping friends' secrets! In this engaging session, students will learn what a secret is, how to distinguish between safe and unsafe secrets, and identify trusted adults they can turn to for help. We’ll discuss the difference between surprises, which are short-lived and joyful, and secrets that can sometimes cause worry. Through interactive activities like sorting games and role-playing, children will practice recognizing unsafe situations and the importance of sharing concerns with adults. Remember, safety is always more important than secrecy!
Join us in learning the art of applause! This engaging program for Grade 3 students focuses on the appropriate times to applaud during assemblies and performances, emphasizing respect and appreciation for performers. Students will explore the significance of applauding, from encouraging speakers to maintaining good audience manners. They will learn when to applaudsuch as after performances or when speakers are introducedand when to refrain from clapping, ensuring they don't interrupt quiet moments or ongoing performances. Through fun activities like the "Applause or Pause" game and role-playing a mini assembly, students will practice respectful applause techniques. Success will be measured by their ability to clap at the right times, demonstrate respect during quiet moments, and support their peers kindly. Let's foster a community of respectful audience members together!
In our Grade 4 lesson on caring for classmates who feel unwell, we equip students with essential skills for handling such situations compassionately and effectively. The lesson unfolds in seven stages, starting with daily preparedness, where students learn to recognize signs of illness and the importance of communicating with adults. Next, they practice checking in with a classmate politely and keeping them comfortable. Students are then guided to inform the teacher promptly and offer safe help while waiting. In case of serious symptoms, they learn to seek adult assistance immediately. After the situation is handled, students reflect on their actions and continue improving their response skills for future incidents. This comprehensive approach fosters empathy and responsibility in our classroom community.
Join us in Grade 2 as we explore the important topic of keeping friends' secrets! In this engaging session, students will learn what a secret is, how to distinguish between safe and unsafe secrets, and identify trusted adults they can turn to for help. We’ll discuss the difference between surprises, which are short-lived and joyful, and secrets that can sometimes cause worry. Through interactive activities like sorting games and role-playing, children will practice recognizing unsafe situations and the importance of sharing concerns with adults. Remember, safety is always more important than secrecy!
PHP Database Operations Diagram
Database APIs in PHP
MySQLi
Overview
MySQL-specific extension
Procedural and OOP styles
When to use
Projects targeting MySQL/MariaDB only
Need MySQL-specific features
PDO (PHP Data Objects)
Overview
Unified interface for multiple DB drivers
Encourages prepared statements
When to use
Applications that may switch databases
Prefer consistent, portable data access
Choose MySQLi for MySQL-focused features; choose PDO for portability and a unified API.
Connection Methods
MySQLi Connection
Constructor / connect
new mysqli(host, user, pass, db, port, socket)
Error handling
connect_error, connect_errno
Charset
set_charset('utf8mb4')
PDO Connection
DSN-based connect
new PDO(dsn, user, pass, options)
Common DSNs
mysql:host=...;dbname=...;charset=utf8mb4
pgsql:host=...;dbname=...
sqlite:/path/to/db.sqlite
Error handling
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
Core Database Operations (CRUD)
Create (INSERT)
MySQLi
prepare() + bind_param() + execute()
PDO
prepare() + execute([$params])
Read (SELECT)
Query patterns
Simple query (no user input)
Prepared statement (with user input)
Fetching results
MySQLi: get_result() / bind_result() + fetch()
PDO: fetch(), fetchAll(), fetch modes (ASSOC/OBJ)
Update (UPDATE)
Prepared statements
Bind parameters and execute
Affected rows
MySQLi: affected_rows
PDO: rowCount()
Delete (DELETE)
Prepared statements
Confirm deletion
Check affected rows / rowCount
Prepared Statements & Parameter Binding
Why use prepared statements
Mitigate SQL injection
Better performance for repeated queries
MySQLi binding
Type specifiers
i (int), d (double), s (string), b (blob)
Example flow
prepare() → bind_param() → execute()
PDO binding
Positional vs named placeholders
? vs :name
Binding styles
execute($array)
bindValue() / bindParam()
Error Handling Strategies
MySQLi
Check return values + error / errno
Optional: throw exceptions (via driver/reporting settings)
PDO
Exceptions with ERRMODE_EXCEPTION
Try/catch around DB operations
Transactions
Use cases
Multi-step operations requiring consistency
Financial/order workflows
MySQLi
begin_transaction() → commit() / rollback()
PDO
beginTransaction() → commit() / rollBack()
Result Handling & Data Mapping
Fetch styles
Arrays (assoc/numeric)
Objects
Pagination patterns
LIMIT/OFFSET (MySQL/Postgres)
Keyset pagination (where applicable)
Security & Best Practices
Input handling
Validate and normalize inputs
Never interpolate untrusted data into SQL
Least privilege
Dedicated DB user with minimal permissions
Charset & collation
Use utf8mb4
Sensitive data
Hash passwords (e.g., password_hash)
Avoid storing secrets in code
Configuration & Deployment
Credential management
Environment variables / config files outside web root
Connection options
Timeouts, persistent connections (use cautiously)
Logging/monitoring
Log errors safely (no sensitive data)
Choosing Between MySQLi and PDO
Prefer MySQLi when
MySQL-only and need MySQL-specific capabilities
Prefer PDO when
Want portability across databases
Prefer consistent API and exception-driven errors