Php 组中的成员总数
我有一个这样的数组,我希望它的总和如下所述:Php 组中的成员总数,php,Php,我有一个这样的数组,我希望它的总和如下所述: Array ( [0] => stdClass Object ( [id] => 1 [group] => 1 ) [1] => stdClass Object ( [id] => 2 [group] => 2 ) [2] =&g
Array
(
[0] => stdClass Object
(
[id] => 1
[group] => 1
)
[1] => stdClass Object
(
[id] => 2
[group] => 2
)
[2] => stdClass Object
(
[id] => 3
[group] => 2
)
[3] => stdClass Object
(
[id] => 4
[group] => 3
)
[4] => stdClass Object
(
[id] => 5
[group] => 3
)
[5] => stdClass Object
(
[id] => 6
[group] => 3
)
)
我希望结果显示如下:
第一组有1名成员。第2组有2名成员。第3组有3名成员
执行下面的代码将帮助您
$arr_ids = array(array('id'=>10,'group'=> '1'),
array('id'=>20,'group'=> '1'),
array('id'=>30,'group'=> '2'),
array('id'=>40,'group'=> '3'),
array('id'=>50,'group'=> '3'),
array('id'=>60,'group'=> '3'),
array('id'=>70,'group'=> '4'),
);
foreach($arr_ids as $ids)
{
$arr_groups[] = $ids['group'];
}
$count_arr = array_count_values($arr_groups);
print"<pre>";
print_r($arr_groups);
print_r($count_arr);
foreach($count_arr as $group=>$count)
{
echo "Group ".$group." = ".$count."<br>";
}
print"</pre>";
我尝试这样做:首先获取所有组的列表,然后foreach组查找该组中的所有成员。但这似乎更复杂的方式。。。也许有一个简单的方法可以做到…太棒了!!!这就是我要找的!非常感谢!!!!