Merge arrays from one string? - php

Question

I am having trouble with trying to merge mulitple arrays into one array I also cant seem to find a decent solution to this problem since using merge_array doesnt work. I made an array in my foreach loop but it keeps coming out as multiple arrays for one string. How can I convert this.
Array
(
[images] => /wp-content/uploads/2015/03/223-HfpWJ4h.jpg
[userid] => 15
)
Array
(
[images] => /wp-content/uploads/2015/03/074-XlqzqVn.jpg
[userid] => 1
)
Array
(
[images] => /wp-content/uploads/2014/09/cj-spiller.jpg
[userid] => 1
)
Array
(
[images] => /wp-content/uploads/2015/02/183-cZRn9rz.jpg
[userid] => 1
)
Array
(
[images] => /wp-content/uploads/2015/02/001-gSxGEWD5.jpg
[userid] => 1
)
To this?
Array
(
[0] => array(
[images] => /wp-content/uploads/2015/03/223-HfpWJ4h.jpg
[userid] => 15
)
[1] => array(
[images] => /wp-content/uploads/2015/03/074-XlqzqVn.jpg
[userid] => 1
)
[2]=> array(
[images] => /wp-content/uploads/2014/09/cj-spiller.jpg
[userid] => 1
)
)
This is my code
global $wpdb, $bp;
$activity_table = bp_core_get_table_prefix() . 'bp_activity';
$activity_meta_table = bp_core_get_table_prefix() . 'bp_activity_meta';
// that have pictures associated with them
$sql = "SELECT a.*, am.meta_value, am2.meta_value as privacy FROM $activity_table a
INNER JOIN $activity_meta_table am ON a.id = am.activity_id
LEFT JOIN (SELECT activity_id, meta_key, meta_value FROM $activity_meta_table
WHERE meta_key = 'activityprivacy') am2 ON a.id = am2.activity_id
AND (am.meta_key = 'buddyboss_pics_aid' OR am.meta_key = 'bboss_pics_aid')
ORDER BY a.date_recorded DESC";
$pics = $wpdb->get_results($sql,ARRAY_A);
$i = 0;
foreach($pics as $pic){
$attachment_id = isset($pic['meta_value']) ? (int)$pic['meta_value'] : 0;
$tn = wp_get_attachment_image_src( $attachment_id, 'buddyboss_pic_tn' );
$userid = $pic['user_id'];
if($tn[0] != ''){
$profile_image = array('images' => $tn[0], 'userid' => $pic['user_id']);
print_r($profile_image);
}
}

Answer 1

It seems like:
$result = array();
//...
foreach($pics as $pic){
//...
$userid = $pic['user_id'];
if($tn[0] != ''){
$profile_image = array('images' => $tn[0], 'userid' => $pic['user_id']);
$result[] = $profile_image;
}
}
Isn't it? Or I've mistaken your purpose.