mysql问题,检查项目是否存在

Question

$gt = 'andrew';

mysql_connect('localhost', '', '');
mysql_select_db('database');
$result = mysql_query("SELECT gamertag FROM register WHERE gamertag = '".$gt."'");

while ($row = mysql_fetch_assoc($result)) {
    $gt = $row['gamertag'];
}

if($gt = 'andrew') {
    echo 'This gamertag has previously been registered!';
}

Answer 1

大问题:

if($gt = 'andrew'){
echo 'This gamertag has previously been registered!';
}

将始终评估为真......替换$gt = 'andrew' 为$gt == 'andrew'