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Editorial Team
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Asked: 2026-05-23T07:44:14+00:00

I have the following php-codeigniter script which attempts to increment a field of a

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I have the following php-codeigniter script which attempts to increment a field of a record using active-record syntax:

$data = array('votes' => '(votes + 1)');
$this->db->where('id', $post['identifier']);
$this->db->update('users', $data);

This produces the following SQL:

"UPDATEusersSETvotes= '(votes + 1)' WHEREid= '44'“

Which doesn’t run, but this SQL does do what I’m looking for:
"UPDATEusersSETvotes= (votes + 1) WHEREid= '44'“` <–Note the lack of quotes around (votes + 1)

Does anyone know how to implement this type of query with codeigniter’s active record syntax?

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1 Answer

  1. Editorial Team

    You can do as given below:

    $this->db->where('id', $post['identifier']);
$this->db->set('votes', 'votes+1', FALSE);
$this->db->update('users');

    The reason this works is because the third (optional) FALSE parameter tells CodeIgniter not to protect the generated query with backticks ('). This means that the generated SQL will be:

    UPDATE users SET votes= votes + 1 WHERE id= '44'

    If you notice, the backticks are removed from '(votes+1)', which produces the desired effect of incrementing the votes attribute by 1.

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