What are some common pitfalls to avoid when using nested loops and conditional statements in PHP for data manipulation?

One common pitfall to avoid when using nested loops and conditional statements in PHP for data manipulation is inefficient code execution due to unnecessary iterations. To solve this, it's important to carefully plan and optimize your loops to minimize redundant operations and improve performance.

// Example of inefficient nested loops
foreach ($array1 as $item1) {
    foreach ($array2 as $item2) {
        // Perform some operation
    }
}

// Optimized version using conditional statement to break out of inner loop
foreach ($array1 as $item1) {
    foreach ($array2 as $item2) {
        if (/* condition */) {
            // Perform operation
            break;
        }
    }
}