$count=$dbh->prepare("select * from ? where score<?");
$count->execute(array($table,$score));
$countNum=$count->rowCount();
è¿å$count=0
$count=$dbh->prepare("select * from {$table} where score<?");
$count->execute(array($score));
$countNum=$count->rowCount();
æ£å¸¸è¿å$count=45
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