call to a member function execute() on a non-object

Question

My script containing that error is this:

$stmt = $this->db->prepare(\'SELECT libelle,activite,adresse,tel,lat,lng FROM etablissements where type IN (\'         


        

Answer 1

$stmt is supposed to be an object with the method execute().
Seems like $this->db->prepare() is not returning the good result.

If $this->db is a mysqli() object you should bind the parameters like that:

if ($stmt = $this->db->prepare('SELECT libelle,activite,adresse,tel,lat,lng FROM etablissements where type IN (?)')) {
  $stmt->bind_param("s", $in_list);
  $stmt->execute();
  // ...
}

Answer 2

Swap the statement bind and execute and replace result with param, It will work fine

$stmt = $this->db->prepare('SELECT libelle,activite,adresse,tel,lat,lng FROM etablissements 
where type IN ('.$in_list.')');
$stmt->bind_param($libelle,$activite,$adresse,$tel,$lat,$lng);
$stmt->execute();

Answer 3

Check the sql you executed,

$this->db->prepare('SELECT libelle,activite,adresse,tel,lat,lng FROM etablissements where type IN ('.$in_list.')');

does not return a valid statement object.

Answer 4

Your db object is null. Check if you close the connection too early or somehow you override it to null.