Dive into the world of database transactions in PHP with this comprehensive guide. Learn how to implement transactions to maintain data integrity, handle errors, and ensure consistency in your PHP applications.

**Key findings:**
1. **Understanding database transactions:**
– A comprehensive overview of database transactions and their importance in PHP programming.

2. **ACID properties:**
– Explore the principles of atomicity, consistency, isolation, and durability in database transactions.

**Implementation in PHP:**
1. **Start a transaction:**
– How to initiate a transaction in PHP using built-in database connection functions.

2. **Commit and rollback:**
– Understand the process of committing changes or rolling back a transaction, depending on success or failure.

**Transaction error handling:**
1. **Handle exceptions:**
– Manage exceptions within transactions to ensure smooth error handling.

2. **Save points:**
– Use savepoints to provide more precise control over transaction rollback scenarios.

**Practical examples:**
1. **Transactional use cases:**
– Real-world examples showing the use of database transactions in PHP.

2. **Parallelism and isolation levels:**
– Strategies for managing concurrent transactions and selecting appropriate isolation levels.

**Recommended procedure:**
1. **Ensuring data consistency:**
– Policies to maintain data consistency and integrity through effective transaction management.

2. **Performance considerations:**
– Tips to optimize transaction processes for better performance.

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6. #Concurrency control
7. #Database consistency
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9. #Error handling
10. #Isolation levels

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