Merge multiple array to single array - mysql

Question

I have this piece of code from which i wish to get a single array that contains all value.
$sql = "SELECT * FROM interest where interest='".$interest."' and userid!='".$myuserid."'";
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0)
{
while($row = mysqli_fetch_assoc($result))
{
$userid = $row["userid"];
if($searchtype == 'both')
{
$sql2 = "SELECT * FROM register where id='".$userid."' and discover = 'on' and id!='".$myuserid."'";
$result2 = mysqli_query($conn, $sql2);
if (mysqli_num_rows($result2) > 0)
{
while($row2 = mysqli_fetch_assoc($result2))
{
echo "<pre>";
print_r($row2);
echo "</pre>";
}
}
}
}
}
The o/p that i am getting is something like this
Array
(
[id] => 1
[email] => A1
[username] =>B1
[password] => C1
[gender] => C1
)
Array
(
[id] => 2
[email] => A2
[username] => B2
[password] => C2
[gender] => D2
)
Array
(
[id] => 3
[email] => A3
[username] => B3
[password] => C3
[gender] => D3
)
But i wish to get this all data in a single array like this
Array
(
[0] => Array
(
[id] => 1
[email] => A1
[username] =>B1
[password] => C1
[gender] => C1
)
[1] => Array
(
[id] => 2
[email] => A2
[username] => B2
[password] => C2
[gender] => D2
)
[2] => Array
(
[id] => 3
[email] => A3
[username] => B3
[password] => C3
[gender] => D3
)
}
can anyone tell how i can do so

Answer 1

Create an array variable like $a=array(); at the start of your code
Get row value in array $a[]=your row value(while loop), then print this outside loop you will get all value in single array print like
print_r($a);

Answer 2

Take one array variable before while loop started like $user_data = array(); and in inner loop you have to set $user_data[] = $row2;
if (mysqli_num_rows($result) > 0) {
$user_data = array();
while($row = mysqli_fetch_assoc($result)) {
$userid = $row["userid"];
if($searchtype == 'both') {
$sql2 = "SELECT * FROM register where id='".$userid."' and discover = 'on' and id!='".$myuserid."'";
$result2 = mysqli_query($conn, $sql2);
if (mysqli_num_rows($result2) > 0) {
while($row2 = mysqli_fetch_assoc($result2)) {
$user_data[] = $row2;
}
}
}
}
print_r($user_data); //Print here your user_data outside the loop.
}

Answer 3

You are almost near to your goal, you just need to define one array and save each row's data in it
// array which contains all rows data
$all_rows = array(); // <------ step 1
if(mysqli_num_rows($result2))
{
while($row2 = mysqli_fetch_assoc($result2))
{
// every record data is stored here
$all_rows[] = $row2; // <------ step 2
}
}
if(!empty($all_rows))
{
print_r($all_rows);
}else
{
echo "do some thing else since zero records fetched";
}