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pf_arr_group_by.php
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<?php
require __DIR__ .'/../vendor/autoload.php';
use pf\arr\PFarr;
$records = [
[
'state' => 0,
'city' => '上海',
'object' => '公交',
],
[
'state' => 1,
'city' => '广州',
'object' => '私家车',
],
[
'state' => 0,
'city' => '山东',
'object' => '公交',
],
[
'state' => 1,
'city' => '上海',
'object' => '私家车',
],
[
'state' => 0,
'city' => '山东',
'object' => '毛驴',
],
];
echo '<pre>';
print_r(PFarr::pf_array_group_by($records, 'city'));
/*
* //返回结果
Array
(
[上海] => Array
(
[0] => Array
(
[state] => 0
[city] => 上海
[object] => 公交
)
[1] => Array
(
[state] => 1
[city] => 上海
[object] => 私家车
)
)
[广州] => Array
(
[0] => Array
(
[state] => 1
[city] => 广州
[object] => 私家车
)
)
[山东] => Array
(
[0] => Array
(
[state] => 0
[city] => 山东
[object] => 公交
)
[1] => Array
(
[state] => 0
[city] => 山东
[object] => 毛驴
)
)
)
*/
print_r(PFarr::pf_array_group_by($records, 'city', 'state'));
/* 返回
Array
(
[上海] => Array
(
[0] => Array
(
[0] => Array
(
[state] => 0
[city] => 上海
[object] => 公交
)
)
[1] => Array
(
[0] => Array
(
[state] => 1
[city] => 上海
[object] => 私家车
)
)
)
[广州] => Array
(
[1] => Array
(
[0] => Array
(
[state] => 1
[city] => 广州
[object] => 私家车
)
)
)
[山东] => Array
(
[0] => Array
(
[0] => Array
(
[state] => 0
[city] => 山东
[object] => 公交
)
[1] => Array
(
[state] => 0
[city] => 山东
[object] => 毛驴
)
)
)
)
*/