How can For and While loops be used interchangeably in PHP?

For and While loops can be used interchangeably in PHP by adjusting the loop structure and conditions. For loops are typically used when the number of iterations is known beforehand, while While loops are used when the condition for looping is based on a specific condition. To interchange them, you can convert a For loop to a While loop by initializing a counter outside the loop and incrementing it inside the loop, or vice versa by setting the condition inside the loop.

// Using a For loop
for ($i = 0; $i < 5; $i++) {
    echo $i . "<br>";
}

// Interchanging to a While loop
$i = 0;
while ($i < 5) {
    echo $i . "<br>";
    $i++;
}