2个数组相加，将一个数组写入另一个数组

//数组a：array (  0 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '2X15',    'part_count' => '0',  ),  1 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '2Z25',    'part_count' => '5',  ),)//数组b：array (  0 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '2Z15',    'part_count' => '100',  ),  1 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '3115',    'part_count' => '28',  ),)

array (  0 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '2X15',    'part_count' => '0',  ),  1 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '2Z15',    'part_count' => '105',  ),  2 =>   array (    'cust_no' => '310F6 1VA5A',    'lotno' => '3115',    'part_count' => '28',  ),)

回复讨论(解决方案)

$t=array();foreach(array_merge($a,$b) as $v){     if(!isset($t[$v['cust_no'].'_'.$v['lotno']])){	     $t[$v['cust_no'].'_'.$v['lotno']]=$v;	 }else{	      $t[$v['cust_no'].'_'.$v['lotno']]['part_count']+=$v['part_count'];	 }	 } print_r(array_values($t));

$v['cust_no'].'_'.$v['lotno']这句是什么意思？

将 cust_no 和 lotno的值组成键判断重复用的

将 cust_no 和 lotno的值组成键判断重复用的
哦，原来可以这样用啊。谢谢了！