2次元配列、アルゴリズム

二次元配列、アルゴリズムを見つけます
この配列は次のようになります。このような配列で同じ従業員 ID を持つイェジを加算する方法
Array
(
[0] => Array
(
[従業員 ID] => 26
[yeji] => 60
)

[1] => 配列
(
[従業員 ID] => 25
[イェジ] => 105
)

[2] => 配列
(
[従業員 ID] => 26
yeji] = > 100
)

[3] => 配列
(
[従業員 ID] => 25
[yeji] => 0
)

)

マージされた配列は次のようになります
Array
(
[0] => Array
(
[employee_id] => 26 [イェジ] => 105
)
)

-----解決策のアイデア----------- ----------




-----ソリューションアイデア-------------- --------

$ar = array (<br />  0 => array (<br />    'employee_id' => '26',<br />    'yeji' => '60',<br />  ),<br />  1 => array (<br />    'employee_id' => '25',<br />    'yeji' => '105',<br />  ),<br />  2 => array (<br />    'employee_id' => '26',<br />    'yeji' => '100',<br />  ),<br />  3 => array (<br />    'employee_id' => '25',<br />    'yeji' => '0',<br />  ),<br />);<br /><br />$res = array();<br />foreach($ar as $item) {<br />  $res[$item['employee_id']]['employee_id'] = $item['employee_id'];<br />  @$res[$item['employee_id']]['yeji'] += $item['yeji'];<br />}<br />print_r(array_values($res));

Array<br />(<br />    [0] => Array<br />        (<br />            [employee_id] => 26<br />            [yeji] => 160<br />        )<br /><br />    [1] => Array<br />        (<br />            [employee_id] => 25<br />            [yeji] => 105<br />        )<br /><br />)<br /><br />

------解決策のアイデア---------- ------------

<br />$arr = array (<br />  0 => array (<br />    'employee_id' => '26',<br />    'yeji' => '60',<br />  ),<br />  1 => array (<br />    'employee_id' => '25',<br />    'yeji' => '105',<br />  ),<br />  2 => array (<br />    'employee_id' => '26',<br />    'yeji' => '100',<br />  ),<br />  3 => array (<br />    'employee_id' => '25',<br />    'yeji' => '0',<br />  ),<br />);<br />$item=array();<br />foreach($arr as $k=>$v){<br />    if(!isset($item[$v['employee_id']])){<br />        $item[$v['employee_id']]['employee_id']=$v['employee_id'];<br />        $item[$v['employee_id']]['yeji']=$v['yeji'];<br />    }else{<br />        $item[$v['employee_id']]['yeji']+=$v['yeji'];<br />    }<br />}<br />print_r($item);<br />

<br />Array<br />(<br />    [26] => Array<br />        (<br />            [employee_id] => 26<br />            [yeji] => 160<br />        )<br /><br />    [25] => Array<br />        (<br />            [employee_id] => 25<br />            [yeji] => 105<br />        )<br /><br />)<br /><br />