php练习02

";
$sanguo=array('shhuguo'=>'liubei','weiguo'=>'caocao','wuguo'=>'sunquan');
$p = array_shift($sanguo);
echo $p.'
';
var_dump($sanguo);
//array-pop()  删除的是最后一个元素
$sanguo=array('shhuguo'=>'liubei','weiguo'=>'caocao','wuguo'=>'sunquan');
$p = array_pop($sanguo);
echo $p.'
';
var_dump($sanguo);
//删除指定的元素  unset()
$sanguo=array('shhuguo'=>'liubei','weiguo'=>'caocao','wuguo'=>'sunquan');
unset($sanguo['shhuguo']);
var_dump($sanguo);
unset($sanguo[0]);
var_dump($sanguo);
unset($sanguo[1],$sanguo['weiguo']);
var_dump($sanguo);
echo"
";
echo"
";
echo"
";