PDO Prepare-Anweisung löst einen Fehler

Question

Ich bin von MySQL auf PDO migrieren. Ich schaffe eine Funktion, aber wenn get Fehler Aufruf:

Catchable fatal error: Object of class stdClass could not be converted to string in file * on line ** 

nicht sicher, wie diese Art der Migration zu behandeln, wenn ich „e.match_id =‚$ row1-> match_id‘“ Sachen haben. Code mit alten mysql:

$query11 = "SELECT COUNT(e.event_id) as numgoals 
FROM event e 
WHERE (e.match_id = '$row1->match_id' AND e.team_id = '$row1->team_a_id' AND e.eventtype IN ('soc_G','soc_PG')) OR 
     (e.match_id = '$row1->match_id' AND e.team_id = '$row1->team_b_id' AND e.eventtype = 'soc_OG')"; 
$result11 = mysql_query($querye11); 
$row11 = mysql_fetch_object($result11); 

Funktion mit PDO:

public function getResult11($row) 
    { 
     $query = "SELECT COUNT(e.event_id) as numgoals 
        FROM event e 
        WHERE (e.match_id = '?->match_id' AND e.team_id = '?->team_a_id' AND e.eventtype IN ('soc_G','soc_PG')) OR 
          (e.match_id = '?->match_id' AND e.team_id = '?->team_b_id' AND e.eventtype = 'soc_OG')"; 
     $statement = $this->db->prepare($query); 
     $statement->execute(array($row)); 
     return $statement->fetchObject(); 
    } 

Wie "e.match_id = '$ row1-> match_id'" konvertieren "$ row1" mit Funktionsparameter zu ändern? Ich habe dieses "e.match_id = '? -> match_id'" verwendet, bin mir aber nicht sicher, ob es richtig ist.

Answer 1

Sie verwenden Variablen in String falsch:

SELECT $match->match_id nur $math und Blätter ->match_id unberührt wandeln.

Verwenden {} um Variable:

SELECT {$match->match_id} 

Proper Benutzer vorbereitete Anweisung

$query = "[...] WHERE (e.match_id = :mId AND e.team_id = :t1Id AND e.eventtype IN ('soc_G','soc_PG')) OR 
         (e.match_id = :mId AND e.team_id = :t2Id AND e.eventtype = 'soc_OG')"; 
$statement = $this->db->prepare($query); 
$statement->execute([ 
    ':mId' => $row1->team_a_id, 
    ':t1Id' => $row1->team_a_id, 
    ':t2Id' => $row1->team_b_id, 
]); 

Wenn in Schleife verwendet

$statement = $this->db->prepare("SELECT * FROM table WHERE id = :id"); 

foreach ($ids as $id) { 
    $statement->execute([ 
     ':id' => $id, 
    ]); 
}