php数组

<?php

$arr = array(1,"2","3",4,5);
print_r($arr);

foreach($arr as $a => $value)
{
	echo $arr[$a]." ";
}

echo "\n";

$arr[] = "6";
$arr[] = 7;
print_r($arr);
printf("\r\n%d %s\r\n",$arr[0],$arr[1]);

unset($arr[0]);
print_r($arr);

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)
1 2 3 4 5
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
)

1 2
Array
(
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
)