explode an array and add array keys

I have a string that looks like this,

IT, MEDIA, ADVERTISING

I am then doing the following code.

$criteria = explode(",", $string);

This obviously creates the following when print_r is run over the $criteria.

array([0] => IT, [1] => MEDIA, [2] => 'ADVERTISING')

I using $criteria to match for keywords in a database in codeigniter application, I am wanting to using something 开发者_StackOverflow社区like,

$this->db->like($criteria);

for this to work though I need the $criteria array to look like this,

array([sector] => IT, [sector] => MEDIA, [sector] => 'ADVERTISING')

How can I do this?

---

PHP can't have multiple values with the same key.

---

You cannot build an array like this. The keys of the array are identical, so the values will overwrite each other.

Also I think that the method you are looking for is where_in():

$names = array('Frank', 'Todd', 'James');

$this->db->where_in('username', $names);

// Produces: WHERE username IN ('Frank', 'Todd', 'James')

---

If you're trying to make OR WHERE clauses with an array like this:

$criteria = array(
    0 => 'IT',
    1 => 'MEDIA',
    2 => 'ADVERTISING',
)

You can loop through it and use like() and or_like() methods:

foreach ($criteria as $index => $value) {
    if ($index == 0)
        $this->db->like('sector', $value);
    else
        $this->db->or_like('sector', $value);
}

// Produces WHERE sector LIKE '%IT%' OR sector LIKE '%MEDIA%' OR sector LIKE '%ADVERTISING%';

---

How about creating your array criteria like this:

$criteria = array('sector'=>explode(",", $string));

OUTPUT

var_dump($criteria);

array(1) {
  ["sector"]=>
  array(3) {
    [0]=>
    string(2) "IT"
    [1]=>
    string(6) " MEDIA"
    [2]=>
    string(12) " ADVERTISING"
  }
}