PHP foreach()

<?
foreach (array_expression as $value)
{
    statement & Condition
}
foreach (array_expression as $key => $value)
{
    statement & Condition
}
?>

<?php
$arr = array("one", "two", "three");
foreach ($arr as $value) {
    echo "Value: $value<br>";
}
echo "<hr>";
reset($arr);
while(list($key, $value) = each($arr)) {
    echo "Key: $key; Value: $value<br>";
}
echo "<hr>";
foreach($arr as $key => $value) {
    echo "Key: $key; Value: $value<br>";
}
?>