PHP foreach fun

foreach.php

<?php

// How can foreach be implemented with while?
while (list($key, $value) = each($array)) {
   print "$key is $value".PHP_EOL;
}

// How to get rid of @ in foreach (@$arr .. ) ? 
// (this is always a bad practice, but anyway)

foreach (($array?:array()) as $k=>$v) {
   print "$key is $value".PHP_EOL;
}