我是php的初学者,整天都在寻找解决方案而没有成功。
我有以下数组:
$data = Array
(
[0] => Array
(
[my_id] => 1
[my_post_id] => 123
[my_status] => 1
[my_rating] => 5
)
[1] => Array
(
[my_id] => 2
[my_post_id] => 123
[my_status] => 1
[my_rating] => 4
)
[2] => Array
(
[my_id] => 3
[my_post_id] => 123
[my_status] => 1
[my_rating] => 5
)
[3] => Array
(
[my_id] => 4
[my_post_id] => 456
[my_status] => 1
[my_rating] => 5
)
[4] => Array
(
[my_id] => 5
[my_post_id] => 456
[my_status] => 1
[my_rating] => 3
)
)
并希望将数组与相同的'my_post_id'合并,并计算具有相同'my_post_id'的'my_status'和'my_rating'的值。
最后,我想拥有以下数组:
$data = Array
(
[0] => Array
(
[my_post_id] => 123
[my_status] => 3
[my_rating] => 14
)
[1] => Array
(
[my_post_id] => 456
[my_status] => 2
[my_rating] => 8
)
)
我可以使用以下代码获取具有唯一“my_post_id”的数组,但我无法找到如何计算其他值。
$out = array();
foreach( $data as $row ) {
$out[$row['my_post_id']] = $row;
}
$array = array_values( $out );
非常感谢任何帮助。
丹尼尔
答案 0 :(得分:1)
这将生成您正在寻找的阵列:
$out = array();
foreach( $data as $row ) {
if (!isset($out[$row['my_post_id']])) {
$out[$row['my_post_id']] = Array( "my_id"=>$row['my_id'],
"my_status" => $row["my_status"],
"my_rating" => $row["my_rating"]);
}
else {
$out[$row['my_post_id']]["my_status"] += $row["my_status"];
$out[$row['my_post_id']]["my_rating"] += $row["my_rating"];
}
}
结果:
Array
(
[123] => Array
(
[my_id] => 1
[my_status] => 3
[my_rating] => 14
)
[456] => Array
(
[my_id] => 4
[my_status] => 2
[my_rating] => 8
)
)
答案 1 :(得分:1)
尝试以下方法 - 未经测试的代码
foreach($data as $key => $val){
if(!array_search($val['my_post_id'],$newArray)){
$newArray[]=array('my_post_id' => $val['my_post_id'],
'my_status' => $val['my_status'],
'my_rating' => $val['my_rating']);
}else{
$myIndex=array_search($val['my_post_id'],$newArray);
$newArray[$myIndex]['my_status']+=$val['my_status'];
$newArray[$myIndex]['my_rating']+=$val['my_rating'];
}
}