how to save variable as array into database

Question

How i can save an array into database as string

col1 |  col2
-------------------
1    | array(1,2)
-------------------
2    | array(6,9)

all value in the array related together

Answer 1

use serialize() and unserialize()

http://php.net/manual/en/function.serialize.php

http://php.net/manual/en/function.unserialize.php

Your data would look like this: a:2:{i:0;i:1;i:1;i:2;}

Answer 2

You can use either Serialize() and Unserialize() you can use the php defualt implode function

Implode()

You can also use json_encode()

And when you are getting it back out of database u can convert it back to an array with json_decode()

Answer 3

You can use serialize() before you insert the array. And unserialize() to get the data back as php array.