SplQueue
Last updated: April 6, 2026 Minimum PHP Version: PHP 5.3+ Status: Stable
Overview
Queue (FIFO - First In First Out) data structure implementation. Perfect for managing task queues, request buffers, or any scenario where order matters.
Queue Operation Diagram
graph LR
A["📥 enqueue<br/>Add to Back"] --> B["Item 1"]
B -->|FIFO| C["Item 2"]
C -->|FIFO| D["Item 3"]
D --> E["📤 dequeue<br/>Remove from Front"]
F["Front<br/>Remove Here"] -.-> B
G["Back<br/>Add Here"] -.-> D
style A fill:#c8e6c9,stroke:#388e3c,color:#000
style B fill:#fff3e0,stroke:#f57c00,color:#000
style C fill:#fff3e0,stroke:#f57c00,color:#000
style D fill:#fff3e0,stroke:#f57c00,color:#000
style E fill:#ffccbc,stroke:#d84315,color:#000
style F fill:#f3e5f5,stroke:#7b1fa2,color:#000
style G fill:#f3e5f5,stroke:#7b1fa2,color:#000
When to Use
- Appropriate use case 1
- Appropriate use case 2
- Not for use case 1
- ❌ Not for use case 2
Basic Example
<?php
// Basic usage example
?>
Advanced Example
<?php
// Advanced usage example
?>
Comparison
| Feature | SplQueue | Alternative |
|---|---|---|
| Use Case | Primary use | Secondary use |
| Performance | Fast | Varies |