return group_concat data as array

问题:

I want to return values I retrieve from the db using group_concat as an array of data. Is it possible to do this in the mysql query? Or do I need to explode the data into an array?

GROUP_CONCAT(sh.hold_id) as holds 

returns this

[holds] => 3,4 

I want it to return:

[holds] => array(3,4) 

回答1:

As I said in my comment: you need to explode the data into an array, using php code like this:

$holds = explode(',', $holds); 

because mysql has no concept of array-type for data.

回答2:

MySQL has no concept of arrays. Therefore it is not able to return an array. It is up to your processing code (here the php scripts) to convert the concatenated notation into a php array.

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