How to convert php string to two-dimensional array

How to convert php string to a two-dimensional array: first create a PHP sample file; then use the explode function to break up the string into an array; then check whether "$data" is empty; finally run the file. Can.

php splits the string into a two-dimensional array

Specific question:

I want to talk about a string, the format is roughly: "Number" Space "Quantity" Enter "Number" "Space" "Quantity" Enter... Such data is stored in a two-dimensional array. Finally write to the database. Use php. Please tell me how to operate?

The number of data rows is not certain. It may be 1 line, or it may be more than 10 lines.

$str="123 5
456 5
159 6";
数组格式
$order = array
(
"1"=>array
(
"123",
"5"
),
"2"=>array
(
"456".
"5"
),
"3=>array
(
"159",
"6"
)
);

Solution:

If the data comes from a file, it is easy to operate. Below is an example of data that does not come from a file

 <?php
if($_POST){
 $arr=explode("\n",$_POST["test"]);
 $result=array();
 foreach($arr as $data){
  trim($data) && $result[]=explode(" ",$data); //首先要检查$data是否为空
 }
 print_r($result);
}
?> 
<form action="a.php" method="post">
<textarea name="test" style="width:500px;height:200px;"></textarea>
<input type="submit" value="提交" />
</form>

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