php一个解析字符串排列数组的方法

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<?php

$str="1|苹果|30

1|桃子|50

1|普通|10

2|小麦|100

2|玉米|35

2|大米|30

3|电脑|5

3|MP3|121

3|打印机|8";

$strArray=explode("n",$str);

/*关键的是下面的代码*/

$result=array();

foreach($strArray as $item)

{

$itemArray=explode('|',$item);

$result[$itemArray[0]][]=$item;

}

echo "<pre>";

print_r($result);

echo "<pre>";

?>

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<pre>Array

(

[1] => Array

(

[0] => 1|苹果|30

[1] => 1|桃子|50

[2] => 1|普通|10

)

[2] => Array

(

[0] => 2|小麦|100

[1] => 2|玉米|35

[2] => 2|大米|30

)

[3] => Array

(

[0] => 3|电脑|5

[1] => 3|MP3|121

[2] => 3|打印机|8

)

)

<pre>