What are common pitfalls when using nested loops in PHP, and how can they be avoided?

One common pitfall when using nested loops in PHP is accidentally creating an infinite loop by not properly incrementing the loop counters. To avoid this, make sure to increment the loop counters within the inner loop, not just the outer loop. Another issue is inefficient code due to unnecessary iterations. To address this, consider if the nested loops can be refactored or if a more optimized algorithm can be used. 

// Example of properly incrementing loop counters in nested loops
for ($i = 0; $i < 5; $i++) {
    for ($j = 0; $j < 3; $j++) {
        // Do something
    }
}

Keywords

nested loops PHP performance optimization debugging

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