我有一个名为$data的大阵。作为参考，我只把它的14个元素放在下面。实际上它可能包含数百个这样的元素：
Array
(
[0] => 16
[1] => Array
(
[0] => Array
(
[user_id] => 199
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-199
[full_name] => Benjamin Jordon
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[1] => Array
(
[user_id] => 901
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-901
[full_name] => Campusknot .
[gender] => 0
[user_image] => 2014/11/b23e023750785c8b5e61ace4d6a202fa%s.png
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[2] => Array
(
[user_id] => 244
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-244
[full_name] => Campusknot .
[gender] => 0
[user_image] => 2015/02/0f34dbb95ce18b17611220b78c87f9a6%s.png
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
)
[3] => Array
(
[user_id] => 200
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-200
[full_name] => Derius Galvez
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[4] => Array
(
[user_id] => 109
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-109
[full_name] => Hiten patel
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[5] => Array
(
[user_id] => 204
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-204
[full_name] => Huong Nguyen
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[6] => Array
(
[user_id] => 196
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-196
[full_name] => Ira Hampton
[gender] => 1
[user_image] => 2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[7] => Array
(
[user_id] => 211
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-211
[full_name] => Kevin Rolando Vilcapaza Diaz
[gender] => 1
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[8] => Array
(
[user_id] => 202
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-202
[full_name] => Mai Le
[gender] => 0
[user_image] => 2014/08/ebaf98a8b7875b4814b06baceaccad22%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[9] => Array
(
[user_id] => 185
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-185
[full_name] => Perceus Mody
[gender] => 1
[user_image] => 2014/09/5f86df8752fd7079296c0101d235a592%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[10] => Array
(
[user_id] => 205
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-205
[full_name] => Phong Phan
[gender] => 0
[user_image] => 2014/08/d32361f1f72a4e24b9c8329501bc8aa1%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[11] => Array
(
[user_id] => 201
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-201
[full_name] => Rahul Gopal
[gender] => 1
[user_image] => 2014/09/d936e72dbad21732812c33e80752aad6%s.png
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[12] => Array
(
[user_id] => 208
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-208
[full_name] => SHUVAM SAHA
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[13] => Array
(
[user_id] => 212
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-212
[full_name] => Turner Corbin
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
)
)
从上面的数组中，请忽略第一个键值对，即[0] => 16。考虑[1]中包含14个元素的数组。
现在我想要的是一个函数，我将传递数组$data和参数page_no。
假设，如果我已经通过了page_no=1那么我应该获得前10条记录，即以下数组：
Array
(
[0] => Array
(
[user_id] => 199
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-199
[full_name] => Benjamin Jordon
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[1] => Array
(
[user_id] => 901
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-901
[full_name] => Campusknot .
[gender] => 0
[user_image] => 2014/11/b23e023750785c8b5e61ace4d6a202fa%s.png
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[2] => Array
(
[user_id] => 244
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-244
[full_name] => Campusknot .
[gender] => 0
[user_image] => 2015/02/0f34dbb95ce18b17611220b78c87f9a6%s.png
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
)
[3] => Array
(
[user_id] => 200
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-200
[full_name] => Derius Galvez
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[4] => Array
(
[user_id] => 109
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-109
[full_name] => Hiten patel
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[5] => Array
(
[user_id] => 204
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-204
[full_name] => Huong Nguyen
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[6] => Array
(
[user_id] => 196
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-196
[full_name] => Ira Hampton
[gender] => 1
[user_image] => 2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[7] => Array
(
[user_id] => 211
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-211
[full_name] => Kevin Rolando Vilcapaza Diaz
[gender] => 1
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[8] => Array
(
[user_id] => 202
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-202
[full_name] => Mai Le
[gender] => 0
[user_image] => 2014/08/ebaf98a8b7875b4814b06baceaccad22%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
[9] => Array
(
[user_id] => 185
[profile_page_id] => 0
[user_server_id] => 1
[user_name] => profile-185
[full_name] => Perceus Mody
[gender] => 1
[user_image] => 2014/09/5f86df8752fd7079296c0101d235a592%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
)
)
然后，如果我传递page_no = 2，那么随后的一组或多个记录，即[10],[11],[12],[13]键应该得到回报。数组键不应再从[0]开始。换句话说，我希望基于参数page_no的值，包含10个或更少元素的数组元素，原始数组键完好无损。
如果特定页码没有元素，那么它应该返回false。
我应该如何以有效的方式做到这一点，因为实际的数组可能是非常庞大的，有数百个这样的元素？请帮我。谢谢。
答案 0 :(得分：0)
使用： -
$input = array('', ................);
$pageno = 1
$numberofrecords = 10;
$array_end = $pageno * 10;
$array_e= $array_end - 1;
$numbers = $numberofrecords - 1;
$array_start = $array_e - $numbers;
print_r(array_slice($input,$array_start,$array_e));
答案 1 :(得分：0)
你可以试试这个：
function slice($data = array(), $pageNo = null)
{
if (is_null($data)) {
return array();
} else {
if ($pageNo == null || $pageNo == 1) {
$ctr = 0;
for ($i = 0; $i < 10; $i++) {
if (isset($data[$ctr])) {
$dataSliced[] = $data[$ctr];
$ctr++;
}
}
} else {
$ctr = ($pageNo * 10) - 10;
for ($i = 0; $i < 10; $i++) {
if (isset($data[$ctr])) {
$dataSliced[] = $data[$ctr];
$ctr++;
}
}
}
return $dataSliced;
}
}
此函数已检查$data为空并将返回一个空数组，否则它将检查控制将返回的数组的$pageNo，如果$pageNo为空或1 $ctr是控制变量，它知道它将获得的数据的索引，因此它将获得数据的索引0，否则如果索引是2，它将获得下一个10条记录的索引，依此类推。希望它有所帮助。
或者如果你想要php的array_slice方法，你可以试试这个：
function slice($data = array(), $pageNo = null)
{
if (is_null($data)) {
return array();
} else {
if ($pageNo) {
$ctr = ($pageNo * 10) - 10;
$dataSliced = array_slice($data, $ctr, 10);
}
return $dataSliced;
}
}