php 数组常用函数

next();
prev();
reset();
end();
each() ---next()

key();
current();

foreach ($_ENV as $key => $value)
{

echo "{$key}  =>{$value}";
echo "</br>";

}

$varr =array("aa","bb","cc");

function demo(){
global $varr;
echo $varr[1];

}

demo();