PHP入门教程第十四节：数组

'nacl','2'=>'o');

echo $a[1]."
";

echo $a[2];

$a = array('张三','李四');
$a[] = '王五';
print_r($a);

for($i=0;$i{
echo $a[$i]."
";
}

$b = array('s'=>'张三','a'=>'王五');
foreach($b as $key=>$value)
{

$c[$value] = $key;
}
print_r($c);