PHP how to separate serial number (range of number) - php

Question

I want to separate numbers, like a serial number, ex:
I've got 1-1000,
if I want to remove 1-100, then I will get 101-1000
if I want to remove 901-1000, then I will get 1-900
if I want to remove 101-200 then I will get 1-100 and 201-1000
and so on.
I just insert first number and last number, like 1 and 100.
The problem is, I am using MySQL to store data, this is my tables:
[items(id,name), serials(id,name), details(id,item_id,serial_id,first,last)][1]
I've a solution, but I think my solution is too long and isn't efficient for my code if I work with large data, this is my solution
public function checkSerialNum(array $data){
$item_id = $data['item_id'];
$serial_id = $data['serial_id'];
$first = $data['first'];
$last = $data['last'];
if($first > $last) return false;
$sql = "SELECT * FROM details WHERE item_id = '$item_id' AND serial_id = '$serial_id'";
$details = $this->db->run($sql)->fetchAll();
$new_detail = [];
foreach($details as $key => $detail){
if($first == $detail->first && $last == $detail->last){ // 1 - 1000 -> 0 - 0
$new_detail['item_id'][] = $item_id;
$new_detail['serial_id'][] = $serial_id;
$new_detail['first'][] = 0;
$new_detail['last'][] = 0;
$new_detail['old_id'][] = $detail->id;
}elseif($first > $detail->first && $last == $detail->last){ // 901-1000 -> 1 - 900
$new_detail['item_id'][] = $item_id;
$new_detail['serial_id'][] = $serial_id;
$new_detail['first'][] = $detail->first;
$new_detail['last'][] = $first - 1;
$new_detail['old_id'][] = $detail->id;
}elseif($first == $detail->first && $last < $detail->last){ // 1 - 100 -> 101 - 1000
$new_detail['item_id'][] = $item_id;
$new_detail['serial_id'][] = $serial_id;
$new_detail['first'][] = $last + 1;
$new_detail['last'][] = $detail->last;
$new_detail['old_id'][] = $detail->id;
}elseif($first > $detail->first && $last < $detail->last){ //101-200 -> 1-100 & 201-1000
$new_detail['item_id'][] = $item_id;
$new_detail['serial_id'][] = $serial_id;
$new_detail['first'][] = $detail->first;
$new_detail['last'][] = $first - 1;
$new_detail['old_id'][] = $detail->id;
$new_detail['item_id'][] = $item_id;
$new_detail['serial_id'][] = $serial_id;
$new_detail['first'][] = $last + 1;
$new_detail['last'][] = $detail->last;
}
}
return $this->tidyArray($new_detail);
}
public function tidyArray($arr){
$new_arr = [];
foreach($arr as $k => $array){
for($i=0;$i < count($array); $i++){
$new_arr[$i][$k] = $array[$i];
}
}
return $new_arr;
}
public function removeSerialNum(array $data){ //
$new_details = $this->checkSerialNum($data);
if(!$new_details) return false;
$item_id = $data['item_id'];
$serial_id = $data['serial_id'];
foreach($new_details as $nd){
if(isset($nd['old_id'])){
$old_id = $nd['old_id'];
$sql = "DELETE FROM details WHERE item_id = '$item_id' AND serial_id = '$serial_id' AND id = '$old_id'";
$this->db->run($sql);
unset($nd['old_id']);
}
$this->insertData('details',$nd);
}
return true;
}
}
The $data is returning something like this
$data = [
'first' => 1,
'last' => 100,
'item_id' => 1,
'serial_id' => 1
];
The function tidyArray() is changing the format array from something like this:
////// it will return like this if I'm not breaking any range, like I've 821-900 and I just input 821-850
Array
(
[item_id] => Array
(
[0] => 1
)
[serial_id] => Array
(
[0] => 1
)
[first] => Array
(
[0] => 821
)
[last] => Array
(
[0] => 850
)
[old_id] => Array
(
[0] => 8
)
)
/////but if I've 821-900 and input like 851-860, it will return like this
Array
(
[item_id] => Array
(
[0] => 1
[1] => 1
)
[serial_id] => Array
(
[0] => 1
[1] => 1
)
[first] => Array
(
[0] => 821
[1] => 861
)
[last] => Array
(
[0] => 850
[1] => 900
)
[old_id] => Array
(
[0] => 10
)
)
to something like this:
//////it will return like this if I'm not breaking any range, like I've 821-900 and I just input 821-850
Array
(
[0] => Array
(
[item_id] => 1
[serial_id] => 1
[first] => 811
[last] => 900
[old_id] => 8
)
)
/////but if I've 821-900 and input like 851-860, it will return like this, its like new range of data, I will explain old_id below..
Array
(
[0] => Array
(
[item_id] => 1
[serial_id] => 1
[first] => 821
[last] => 850
[old_id] => 10
)
[1] => Array
(
[item_id] => 1
[serial_id] => 1
[first] => 861
[last] => 900
)
)
and the last is function removeSerialNum() this will delete the affected range of number, example I've 101-200, 301-900 in my database, then I want to remove 151-160, so it will select using the affected row and that's 101-200 row then delete it and change with a new one, this is my data from the array above, this will explain what old_id use for:
"id" "item_id" "serial_id" "first" "last"
"3" "1" "1" "101" "150"
"4" "1" "1" "161" "200"
"5" "1" "1" "301" "350"
"7" "1" "1" "701" "800"
"9" "1" "1" "802" "810"
"10" "1" "1" "821" "900" ->the affected row
in case you wonder what is function insertData() looks like:
public function insertData($table,array $data){
$sql = "INSERT INTO $table SET ";
$vals = [];
foreach($data as $key => $val){
$vals[] = "$key = '$val'";
}
$sql .= implode(',',$vals);
return $this->db->run($sql);
}
This solution is working for me and I just want to ask how can I get a same result but with less lines of code or in a smarter way.