因此,我试图在foreach中进行数量不确定的bindParam调用,但是由于某种原因,它失败了。我知道$ sql变量工作正常,但是我很确定在bindParam上它失败了。有什么理由吗?
$sql = "INSERT INTO " . $row1["rand"] . " (" . $areas . ") VALUES (" . $vals . ")";
echo $sql;
$entry2 = $conn->prepare("'".$sql."'");
//echo "swag";
foreach($splitHeader as $element){
if(strlen($element)>0) {
$thisVal = "':" . $element . "'";
$entry2->bindParam($thisVal,$_POST[$element]);
}
}
$entry2->execute();
答案 0 :(得分:0)
您在查询中定义的参数数量必须与您绑定的参数数量匹配。
您需要循环两次以遍历数据:一次是动态构造sql语句(然后您可以prepare
),然后是第二次绑定参数,最后才调用execute
这里是您的代码的改编版,它演示了原理:
$cols = "";
$vals = "";
foreach( $splitHeader as $element ) {
if( strlen($element) > 0 ) {
if ( strlen($cols) > 0 ) {
$cols .= ", ";
$vals .= ", ";
}
$cols .= $element;
$vals .= "?";
}
}
$sql = "INSERT INTO " . $row1["rand"] . " (". $cols . ") VALUES(". $vals . ")";
echo $sql;
$sth = $conn->prepare($sql);
$i = 1;
foreach($splitHeader as $element){
if( strlen($element) > 0 ) {
$sth->bindParam( $i, $_POST[$element] );
$i++;
}
}
$sth->execute();