配列数分ループして値を取り出す方法

多次元配列

        $test03=array(
                array('111', '222'),
                array('333', '444')
        );
        foreach ($test03 as $key1 =>$val1) {

            foreach ($val1 as $key2 => $val2) {
                debug($key2 . "=>" . $val2);
            }
        }

/*
debug: 0=>Array
debug: 0=>111
debug: 1=>222
debug: 1=>Array
debug: 0=>333
debug: 1=>444 
*/

配列

        $test01[]='aaa';
        $test01[]='bbb';

        foreach ($test01 as $key => $val) {
            debug($key . "=>" . $test01[$key]);
            debug($key . "=>" . $val);
        }

/*
debug: 0=>aaa content.js:73
debug: 0=>aaa content.js:73
debug: 1=>bbb content.js:73
debug: 1=>bbb 
*/

        $test02=array('ccc','ddd');

        foreach ($test02 as $key => $val) {
            debug($key . "=>" . $val);
        }

/*
debug: 0=>ccc
debug: 1=>ddd 
*/