Codeigniter DB query php - php

Question

I have the following codes:
$spaces=0;
$str="bike car ";
for($i = 0; $i < strlen($str); $i++)
{
if($str[$i]==" ")
{
$spaces+=1;
}
}
$names=explode(" ",$str);
The above code is used to split the words inside the string. How do i do a db query wherein i get the id of the names(words in the string i separated).
Assuming, i have a price table
The table has lets say 2 cols, item name and id
How do i parse DB query wherein i need to get the ids of the item names listed.

Answer 1

I guess you want to get the id of exploded $name simply you can use $this->db->where_in()
example :
$names = array('Frank', 'Todd', 'James');
$this->db->where_in('username', $names);
// Produces: WHERE username IN ('Frank', 'Todd', 'James')
See the documenation here : Where In Query
So the next line of your code maybe seems like this one :
$names = explode(" ",$str);
$this->db->select('id')
->where_in('your_table_name',$names);
$query = $this->db->get();
$result = $query->result_array();
then you can use the $result by
foreach($result as $r){
echo 'The id is :'.$r['id'];
}

Answer 2

You can simple use array_keys and array_values to traverse you array keys and values
//sample array
Array
(
[1334] => Face Towel
[4552] => White Socks
[3442] => Lotion
[6643] => Pants
[4432] => foobar
[5532] => bar
)
$items = implode(',',array_values($array)); //will get the array values
$itemid = implode(',',array_map('intval',array_keys($array))); //will get the array keys
$this->db->where_in('items', $items);
// where items IN ('Face Towel','White Socks','Lotion','pants','foobar','bar')
$this->db->where_in('itemid', $itemid);
// where itemid IN (1334,4552,3442,6643,4432,5532)
Note that i used array_map to loop through each keys and cast every key as integer.