pdo fetch code example
Example 1: pdo fetch
<?php
$sth = $dbh->prepare("SELECT name, colour FROM fruit");
$sth->execute();
print("PDO::FETCH_ASSOC: ");
print("Return next row as an array indexed by column name\n");
$result = $sth->fetch(PDO::FETCH_ASSOC);
print_r($result);
print("\n");
print("PDO::FETCH_BOTH: ");
print("Return next row as an array indexed by both column name and number\n");
$result = $sth->fetch(PDO::FETCH_BOTH);
print_r($result);
print("\n");
print("PDO::FETCH_LAZY: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO::FETCH_LAZY);
print_r($result);
print("\n");
print("PDO::FETCH_OBJ: ");
print("Return next row as an anonymous object with column names as properties\n");
$result = $sth->fetch(PDO::FETCH_OBJ);
print $result->name;
print("\n");
?>
Example 2: PDO::FETCH_OBJ
It should be mentioned that this method can set even non-public properties. It may sound strange but it can actually be very useful when creating an object based on mysql result.
Consider a User class:
<?php
class User {
private $id, $name;
private function __construct () {}
public static function load_by_id ($id) {
$stmt = $pdo->prepare('SELECT id, name FROM users WHERE id=?');
$stmt->execute([$id]);
return $stmt->fetchObject(__CLASS__);
}
}
$user = User::load_by_id(1);
var_dump($user);
?>
fetchObject() doesn't care about properties being public or not. It just passes the result to the object. Output is like:
object(User)#3 (2) {
["id":"User":private]=>
string(1) "1"
["name":"User":private]=>
string(10) "John Smith"
}
Example 3: php fetch
while ($row = mysqli_fetch_assoc( $result)) {}
Example 4: php pdo fetch from db
$dbhost = @mysql_connect($host, $user, $pass) or die('Unable to connect to server');
@mysql_select_db('divebay') or die('Unable to select database');
$search = $_GET['searchdivebay'];
$query = trim($search);
$sql = "SELECT * FROM auction WHERE name LIKE '%" . $query . "%'";
if(!isset($query)){
echo 'Your search was invalid';
exit;
}
$result = mysql_query($trim);
$numrows = mysql_num_rows($result);
mysql_close($dbhost);
Example 5: php pdo fetch from db
$pdo = new PDO('mysql:host=$host; dbname=$database;', $user, $pass);
$stmt = $pdo->prepare('SELECT * FROM auction WHERE name = :name');
$stmt->bindParam(':name', $_GET['searchdivebay']);
$stmt->execute(array(':name' => $name);
Example 6: how to fetch data using pdo in php
$stmt = $pdo->prepare("SELECT * FROM users LIMIT :limit, :offset");$stmt->execute(['limit' => $limit, 'offset' => $offset]); $data = $stmt->fetchAll();