While Loops

A while loop repeats while its condition remains true.

while_loop.php

<?php
$start = ;
$current = $start;
$total = 0;

while ($current > 0) {
    $total += $current;
    $current--;
}

echo "start=" . $start . "\n";
echo "total=" . $total . "\n";
echo "current=" . $current . "\n";

<?php
$start = ;
$current = $start;
$total = 0;

while ($current > 0) {
    $total += $current;
    $current--;
}

echo "start=" . $start . "\n";
echo "total=" . $total . "\n";
echo "current=" . $current . "\n";

<?php
$start = ;
$current = $start;
$total = 0;

while ($current > 0) {
    $total += $current;
    $current--;
}

echo "start=" . $start . "\n";
echo "total=" . $total . "\n";
echo "current=" . $current . "\n";

while condition The condition is checked before each loop pass.