Question

我需要使用PHP按键值对数组进行排序。

我正在解释下面的数组。

$clients=array(array("clinet_id"=>9,"company"=>3,"id"=>4),array("clinet_id"=>9,"company"=>3,"id"=>6),array("clinet_id"=>9,"company"=>3,"id"=>7),array("clinet_id"=>10,"company"=>2,"id"=>4),array("clinet_id"=>10,"company"=>2,"id"=>8));
echo json_encode($clients);

这里我需要按照client_id排序数组，这意味着同一client_id将合并为一个数组，其中id为逗号分隔字符串。我正在解释下面的预期输出。

$templatearr[9]=array('3' =>4,6,7)
$templatearr[10]=array('2' =>4,8)

这意味着它应该是$templatearr[clinet_id]=array(company =>id1,id2,...,)格式。

Answer 1

只需使用foreach和Build新数组，如下所示

<?php

$clients=array(array("clinet_id"=>9,"company"=>3,"id"=>4),array("clinet_id"=>9,"company"=>3,"id"=>6),array("clinet_id"=>9,"company"=>3,"id"=>7),array("clinet_id"=>10,"company"=>2,"id"=>4),array("clinet_id"=>10,"company"=>2,"id"=>8));

$temp =array();
foreach($clients as $key=>$val)
{
    if(isset($temp[$val['clinet_id']])){

         $temp[$val['clinet_id']][$val['company']].=','.$val['id'];

    }else{


         $temp[$val['clinet_id']][$val['company']]=$val['id'];
    }


}

print_r($temp);
?>

输出

Array
(
    [9] => Array
        (
            [3] => 4,6,7
        )

    [10] => Array
        (
            [2] => 4,8
        )

)

Answer 2

像这样的代码：

$tmp = array();
foreach ($clients as $k => $v) {
    if(!isset($tmp[$v['clinet_id']])){
        $tmp[$v['clinet_id']] = '';
    }
    if(!is_array($tmp[$v['clinet_id']])){
        $tmp[$v['clinet_id']][$v['company']] =  strval($v['id']);
    }else{
        if($tmp[$v['clinet_id']][$v['company']]){
            $tmp[$v['clinet_id']][$v['company']] .=','.$v['id'];
        }else{
            $tmp[$v['clinet_id']][$v['company']] =  strval($v['id']);
        }
    }
}

结果是：

Array
(
    [9] => Array
        (
            [3] => 4,6,7
        )

    [10] => Array
        (
            [2] => 4,8
        )

)

如何使用PHP将数组排序为相同的键值？

2 个答案: