二维数组，求一个算法
这个数组是这样子的，怎么把这样的数组，相同employee_id的yeji加起来
Array
(
[0] => Array
(
[employee_id] => 26
[yeji] => 60
)
[1] => Array
(
[employee_id] => 25
[yeji] => 105
)
[2] => Array
(
[employee_id] => 26
[yeji] => 100
)
[3] => Array
(
[employee_id] => 25
[yeji] => 0
)
)
合并后的数组是这样
Array
(
[0] => Array
(
[employee_id] => 26
[yeji] => 160
)
[1] => Array
(
[employee_id] => 25
[yeji] => 105
)
)
------解决思路----------------------
$ar = array (<br /> 0 => array (<br /> 'employee_id' => '26',<br /> 'yeji' => '60',<br /> ),<br /> 1 => array (<br /> 'employee_id' => '25',<br /> 'yeji' => '105',<br /> ),<br /> 2 => array (<br /> 'employee_id' => '26',<br /> 'yeji' => '100',<br /> ),<br /> 3 => array (<br /> 'employee_id' => '25',<br /> 'yeji' => '0',<br /> ),<br />);<br /><br />$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 />
<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 />
function calcArrSameId($arr=array())<br />{<br /> foreach ($arr as $key => $value) {<br /> //print_r($value);die;<br /> if(!isset($tmp[$value['employee_id']]))<br /> {<br /> $tmp[$value['employee_id']]['employee_id'] = $value['employee_id'];<br /> $tmp[$value['employee_id']]['yeji'] = $value['yeji'];<br /> }else{<br /> $tmp[$value['employee_id']]['yeji'] += $value['yeji'];<br /> }<br /> <br /> }<br /> $list = array_values($tmp);<br /> print_r($list);exit;<br />}
