Problema con FOREACH

[the_web_saint]

foreach(expresion_array as $value)
foreach(expresion_array as $key => $value

UN EJEMPLO SENCILLO PODRIA SER:

<?php
$arr = array("one", "two", "three");
reset ($arr);
while (list(, $value) = each ($arr)) {
echo "Value: $value<br>\n";
}

foreach ($arr as $value) {
echo "Value: $value<br>\n";
}
?>