Classic example of php code optimization_PHP tutorial

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。

ID	FIELD1	FIELD2	FIELD3	FIELD4	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

ID	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)

	ID	FIELD1	FIELD2	FIELD3	FIELD4	Key
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

Implement the above array separation code

After this, it is very convenient to access the block data of tempArray

foreach($tempArray as $row){

array1[$row['ID']] = $row['Key'];

array2[$row['Key']][] = $row;

}

Access and Processing Codes

foreach($array1 as $ID => $Key){

$this->doSomeThing($ID);

　//Access the block array of tempArray $array2[$Key]

　$this->doSomeThing2($array2[$Key]);

}

http://www.bkjia.com/PHPjc/323010.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/323010.htmlTechArticleThe method I use is to distinguish blocks by key, and then assign the blocks to other variables, and then do some more Operation, this uses a lot of for and foreach, and the amount of code is also large, so it was rejected...