PHP Redis::rPush() Method: Usage and Examples

Appends one or more values to the end of a Redis list.

The objective is to understand the behavior and operational limits, not only the method name.

What It Does

Appends one or more values to the end of a Redis list.

Syntax and Return Value

Redis::rPush(...)

The return value and exceptional cases depend on the call described here: For a FIFO queue, append with rPush and remove with lPop.

Requirements: install and enable the corresponding PHP driver or extension and configure the service before running the examples.

Example 1: Basic Use

Requires the phpredis extension and a running Redis server. Keys use a guide-specific prefix; clean up example keys after experimenting.

<?php
$redis = new Redis();
$redis->connect(getenv('REDIS_HOST') ?: '127.0.0.1', (int) (getenv('REDIS_PORT') ?: 6379), 2.0);
$redis->rPush('guide:rpush:1',"alpha",'draft');
echo json_encode($redis->lRange('guide:rpush:1',0,-1));

Example 2: A Second Scenario

Requires the phpredis extension and a running Redis server. Keys use a guide-specific prefix; clean up example keys after experimenting.

<?php
$redis = new Redis();
$redis->connect(getenv('REDIS_HOST') ?: '127.0.0.1', (int) (getenv('REDIS_PORT') ?: 6379), 2.0);
$redis->rPush('guide:rpush:2',"alpha",'review');
echo json_encode($redis->lRange('guide:rpush:2',0,-1));

Example 3: Practical Checks

Requires the phpredis extension and a running Redis server. Keys use a guide-specific prefix; clean up example keys after experimenting.

<?php
$redis = new Redis();
$redis->connect(getenv('REDIS_HOST') ?: '127.0.0.1', (int) (getenv('REDIS_PORT') ?: 6379), 2.0);
$redis->rPush('guide:rpush:3',"alpha",'published');
echo json_encode($redis->lRange('guide:rpush:3',0,-1));

Important Behavior and Edge Cases

For a FIFO queue, append with rPush and remove with lPop.

For production use, also account for error handling, data validation, resource limits and environment-specific driver behavior.

Comparison with Related Approaches

Common Beginner Mistakes

Key Takeaways

• Appends one or more values to the end of a Redis list.
• For a FIFO queue, append with rPush and remove with lPop.
• lPush inserts at the start instead.

Choose this API or pattern when its exact semantics match your task, and verify the result against the database driver and runtime used by your application.