PDO Fetch data returns array of string - php

Question

I am trying to get data from a MySQL database with PDO but unfortunately PDO returns the result as an array of strings. I want to keep the native MySQL data types in the result array.
I have tried setting PDO::ATTR_DEFAULT_FETCH_MODE to both PDO::FETCH_ASSOC AND PDO::FETCH_OBJ but it was still returning INT data as string.
Here is the result of dump:
array (size=1)
0 =>
object(stdClass)[27]
public 'id' => string '3' (length=1)
public 'avatar' => string '' (length=0)
public 'fullName' => string 'Mikheil Janiashvili' (length=19)
public 'email' => string 'xxxxx#yyyyy.com' (length=17)
public 'phone' => string '23 3537 20 03544' (length=12)
public 'educationGE' => string '' (length=0)
public 'educationEN' => string '' (length=0)
public 'educationRU' => string '' (length=0)
public 'experienceGE' => string '' (length=0)
public 'experienceEN' => string '' (length=0)
public 'experienceRU' => string '' (length=0)
public 'descriptionGE' => string '' (length=0)
public 'descriptionEN' => string '' (length=0)
public 'descriptionRU' => string '' (length=0)

Answer 1

When you instantiate your PDO object, you need to tell it to use MySQL's native prepared queries:
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
Assuming you're using PHP >= 5.3 you will be using the mysqlnd library, which can return proper data types from prepared queries.
Example:
$ php -a
Interactive shell
php > $db = PDO("mysql:host=localhost;dbname=test", "test", "");
php > $res = $db->query("SELECT 1, PI()");
php > var_dump($res->fetch());
array(4) {
[1]=>
string(1) "1"
[2]=>
string(1) "1"
["PI()"]=>
string(8) "3.141593"
[3]=>
string(8) "3.141593"
}
php > $db = PDO("mysql:host=localhost;dbname=test", "test", "", [PDO::ATTR_EMULATE_PREPARES=>false]);
php > $res = $db->query("SELECT 1, PI()");
php > var_dump($res->fetch());
array(4) {
[1]=>
int(1)
[2]=>
int(1)
["PI()"]=>
float(3.1415926535898)
[3]=>
float(3.1415926535898)
}
php >