What is the purpose of nesting a while loop within a for loop in PHP?

Nesting a while loop within a for loop in PHP can be useful when you want to iterate over a set of elements using the for loop and then perform additional iterations or checks on each element using the while loop. This can be particularly helpful when you need to perform more complex operations on each element within the for loop. 

for ($i = 0; $i < 5; $i++) {
    echo "Outer loop iteration: $i <br>";
    
    $j = 0;
    while ($j < 3) {
        echo "Inner loop iteration: $j <br>";
        $j++;
    }
}

Keywords

PHP while loop for loop nesting iteration

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