$a = array( 1, 2, 3, 10 );


foreach( $a as $b ) {
	echo "$b<br>";
}

配列のかわりに変数を使用したい場合

list($a,$b,$c,$d) = array( 1, 2, 3, 10 );


echo $a,$b,$c,$d;

$a = array( "001" => 1, "002" => 2, "003" => 3, "010" => 10 );


foreach( $a as $b => $c ) {
	echo "$a[$b]<br>";
	echo "$b<br>";
	echo "$c<br>";
}

$a[0] = 1;
$a[1] = 2;
$a[2] = 3;
$a[3] = 10;


foreach( $a as $b ) {
	echo "$b<br>";
}