（PDO）UPDATEはWHERE変数で更新されません

Question

ここで問題になるのは、GuildNameを持つWHEREがあるとすぐに機能しないことです。単に何も更新しません。
id = 1（100ギルドがあるので、id = 1を設定するのはオプションではありません）とすぐに動作します。

$form   = $_POST; 
$boss   = $form['bossname']; 
$gname   = $form['guildname']; 
$screen   = $form['screenshot']; 
$log   = $form['logs']; 
$defeat   = $form['defeat']; 

if(isset($_POST['edit-guild'])){ 

    $Statement = $conn->prepare("UPDATE $boss SET `Bossname` =:boss, `GuildName` =:gname, `Screenshot` =:screen, `Link` =:link, `KillTime` =:defeattime, `KillYN` =:kill WHERE `GuildName`=:gname"); 
    // EXECUTING ARRAY FOR ^GUILD INFORMATION 
    $Statement->execute(array(
     "boss"   => $boss, 
     "gname"   => $gname, 
     "screen"  => $screen, 
     "link"   => $log, 
     "defeattime" => $defeat, 
     "kill"   => 'Yes' 
     )); 
} 

私はWHERE id = 1を持つとすぐに動作します。

$Statement = $conn->prepare("UPDATE $boss SET `Bossname` =:boss, `GuildName` =:gname, `Screenshot` =:screen, `Link` =:link, `KillTime` =:defeattime, `KillYN` =:kill WHERE id=1"); 

Answer 1

前述のとおり、同じパラメータを再使用することはできません。

if(isset($_POST['edit-guild'])){ 

    $Statement = $conn->prepare("UPDATE $boss SET `Bossname` =:boss, `GuildName` =:gname, `Screenshot` =:screen, `Link` =:link, `KillTime` =:defeattime, `KillYN` =:kill WHERE `GuildName`=:gname2"); 
    // EXECUTING ARRAY FOR ^GUILD INFORMATION 
    $Statement->execute(array(
     "boss"   => $boss, 
     "gname"   => $gname, 
     "gname2"   => $gname, 
     "screen"  => $screen, 
     "link"   => $log, 
     "defeattime" => $defeat, 
     "kill"   => 'Yes' 
     )); 
} 

Answer 2

gnameフィールドをアップデートセットから削除してください。

$Statement = $conn->prepare("UPDATE $boss SET `Bossname` =:boss, `Screenshot` =:screen, `Link` =:link, `KillTime` =:defeattime, `KillYN` =:kill WHERE `GuildName`=:gname"); 

あなたはgnameはあなたが別の別の名前を試すかの条件が別のフィールドid