如何在php中将双数组数据存储到字符串中？

I have data in double array in php. Now I need to store that array data into string. How can I do that in php? I am new to php. Please help me in this regard.

Array is as follows:

   Array ( [0] => Array ( [id] => 100 [type] => test1 [count] => 8 [count2] => 8) 
   [1] => Array ( [id] => 103 [type2] => test2[count2] => 3 [count3] => 3 ))

You can use implode() to convert an array into a string: http://php.net/manual/en/function.implode.php