foreach (array as $value){
//code to be executed;
print("value : $value");
}
foreach (array as $key => $value){
//code to be executed;
print("key[$key] => $value");
}
<?php
$arr = array(1, 2, 3, 4);
foreach ($arr as &$value) {
$value = $value * 2;
}
// $arr is now array(2, 4, 6, 8)
unset($value); // break the reference with the last element
?>