Explode array to multi array - php

Question

This is my default array and this concat_group will explode in my code
MySQL CODE
this is my query to get data
SELECT
results.StuID,
subjects_d.SubjectID,
subjects.ID,
users.*,
exams.ID,
classes.Name AS ClName,
GROUP_CONCAT(subjects.Super_Degree, ',',subjects_d.SubjectID, ',', results.ExamID, ',',results.Exam1,',',results.Exam2,',',results.Exam3 ORDER BY subjects_d.SubjectID, results.ExamID ASC) AS data
FROM
results
LEFT JOIN
users
ON
users.UID = results.StuID
LEFT JOIN
subjects_d
ON
subjects_d.SubID = results.Sub_ID
LEFT JOIN
subjects
ON
subjects_d.SubjectID = subjects.ID
LEFT JOIN
exams
ON
exams.ID = results.ExamID
INNER JOIN
classes
ON
classes.CID = subjects_d.C_ID
WHERE
subjects_d.C_ID = ?
GROUP BY results.StuID
ORDER BY StuID
PHP CODE
here I want to explode my array from MySQL
<?php foreach ($arr as $student) {
<?php $data_array = explode(',',$student['data']); ?>
<?php echo '<pre>'; print_r($data_array) ?>
<?php } ?>
OUTPUT
the output from print_r.
Array
(
[0] => 1
[1] => 90
[2] => 0
[3] => 0
[4] => 0
[5] => 2
[6] => 90
[7] => 0
[8] => 0
[9] => 0
[10] => 3
[11] => 90
[12] => 0
[13] => 0
[14] => 0
}
I need to Explode this to multi-array like it
Need to get this output
Array[0]
(
[0] => 1
[1] => 90
[2] => 0
[3] => 0
[4] => 0
)
Array[1]
(
[5] => 2
[6] => 90
[7] => 0
[8] => 0
[9] => 0
)
Array[2]
(
[10] => 3
[11] => 90
[12] => 0
[13] => 0
[14] => 0
)
need your help to get this output arrays
Thank you.

Answer 1

You can use array_chunk for this.
$final = array_chunk( $arr, 5, true );
This will result to:
Array
(
[0] => Array
(
[0] => 1
[1] => 90
[2] => 0
[3] => 0
[4] => 0
)
[1] => Array
(
[5] => 2
[6] => 90
[7] => 0
[8] => 0
[9] => 0
)
[2] => Array
(
[10] => 3
[11] => 90
[12] => 0
[13] => 0
[14] => 0
)
)
Documentation: http://php.net/manual/en/function.array-chunk.php