How can I check if mysql table column even exists?

Question

How can I check if mysql table field even exists ?

The column name is \'price\' and I need to see if it exists.

Haven\'t understood really how the \'EXISTS\'

Answer 1

I just done something like this using this function for Wordpress, this for update tables that having new chnages on it

public function alterTable() {

    $table_name = $this->prefix . $this->tables['name'];

    $select = "select * from `{$table_name}` where 0=0 limit 1;";
    $query = $this->db->get_results($select, ARRAY_A);


    if (isset($query[0]) && !key_exists('adv', $query[0])) {
        $sql = "ALTER TABLE `{$table_name}` ADD `me` INT NULL DEFAULT NULL ;";
        $this->db->query($sql);
    }

}