我用的方法是按key区分块，然后在将块赋给其他的变量，然后再进行一些操作，这样用到了很多的for和foreach，而且代码量也很大，所以被退回来了。 经过上面的指导，发现真的好简单，现在与大家一同分享。
decoration: underline">ID |
decoration: underline">FIELD1 |
decoration: underline">FIELD2 |
decoration: underline">FIELD3 |
decoration: underline">FIELD4 |
decoration: underline">Key |
| 1 |
*** | *** | *** | *** | meat1 |
| 2 |
*** | *** | *** | *** | meat1 |
| 3 |
*** | *** | *** | *** | meat1 |
| 4 | *** | *** | *** | *** | meat1 |
| 5 |
*** | *** | *** | *** | fruit2 |
| 6 | *** | *** | *** | *** | fruit2 |
| 7 |
*** | *** | *** | *** | fruit2 |
| 8 |
*** | *** | *** | *** | fruit2 |
| 9 |
*** | *** | *** | *** | fruit2 |
| 10 |
*** | *** | *** | *** | food3 |
| 11 |
*** | *** | *** | *** | food3 |
现在有如上所示的结果
要求：要对这个已经按key进行排序了的数组进行操作，相同key的项进行处理。
提示：这个是很典型的母子表的结构，也就是说其实它是两张表的合并，可以这样处理成两个数组，方便数组里面对块的操作
array1:ID|Key
decoration: underline">ID |
decoration: underline">Key |
| 1 |
meat1 |
| 2 |
meat1 |
| 3 |
meat1 |
| 4 | meat1 |
| 5 |
fruit2 |
| 6 | fruit2 |
| 7 |
fruit2 |
| 8 |
fruit2 |
| 9 |
fruit2 |
| 10 |
food3 |
| 11 |
food3 |
array2:key => array(ID,FIELD1,FIELD2,FIELD3,FIELD4,FIELD5,Key)
| decoration: underline"> |
decoration: underline"> |
decoration: underline"> |
decoration: underline"> |
decoration: underline"> |
decoration: underline"> | |
| meat1=> |
1 |
*** | *** | *** | *** | meat1 |
| 2 |
*** | *** | *** | *** | meat1 | |
| 3 |
*** | *** | *** | *** | meat1 | |
| 4 | *** | *** | *** | *** | meat1 | |
| fruit2=> | 5 |
*** | *** | *** | *** | fruit2 |
| 6 | *** | *** | *** | *** | fruit2 | |
| 7 |
*** | *** | *** | *** | fruit2 | |
| 8 |
*** | *** | *** | *** | fruit2 | |
| 9 |
*** | *** | *** | *** | fruit2 | |
| food3=> | 10 |
*** | *** | *** | *** | food3 |
| 11 |
*** | *** | *** | *** | food3 |
实现如上数组分离代码
这样后，访问tempArray的块数据就非常方便了
foreach($tempArray as $row){
array1[$row['ID']] = $row['Key'];
array2[$row['Key']][] = $row;
}
访问和处理代码
foreach($array1 as $ID => $Key){
$this->doSomeThing($ID);
$this->doSomeThing2();
}
原文地址：https://www.jb51.cc/php/28093.html
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