php – 使用PDO更新数组

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我正在为我的用户创建一个多步骤表单.他们将被允许更新任何或所有字段.所以,我需要发送值,检查它们是否已设置,如果是,则运行UPDATE.这是我到目前为止:
public function updateUser($firstName,$lastName,$streetAddress,$city,$state,$zip,$emailAddress,$industry,$password,$public = 1,$phone1,$phone2,$website,){

    $updates = array(
        'firstName'             => $firstName,'lastName'              => $lastName,'streetAddress'         => $streetAddress,'city'                  => $city,'state'                 => $state,'zip'                   => $zip,'emailAddress'          => $emailAddress,'industry'              => $industry,'password'              => $password,'public'                => $public,'phone1'                => $phone1,'phone2'                => $phone2,'website'               => $website,);

这是我的PDO(嗯,开始尝试)

$sth = $this->dbh->prepare("UPDATE user SET firstName = "); //<---Stuck here
    $sth->execute();
    $result = $sth->fetchAll(PDO::FETCH_ASSOC);
    return $result;

基本上,我如何创建UPDATE语句,以便它只更新数组中非NULL的项?

我想过运行这样的foreach循环:

foreach($updates as $key => $value) {
        if($value == NULL) {
            unset($updates[$key]);
        }
    }

但如果我不确定这些值,我该如何编写准备语句?

如果我完全错了,请指出我正确的方向.谢谢.

首先,使用 array_filter删除所有NULL值:
$updates = array_filter($updates,function ($value) {
    return null !== $value;
});

其次,绑定参数,使您的生活更轻松:

$query = 'UPDATE table SET';
$values = array();

foreach ($updates as $name => $value) {
    $query .= ' '.$name.' = :'.$name.','; // the :$name part is the placeholder,e.g. :zip
    $values[':'.$name] = $value; // save the placeholder
}

$query = substr($query,-1).';'; // remove last,and add a ;

$sth = $this->dbh->prepare($query);

$sth->execute($values); // bind placeholder array to the query and execute everything

// ... do something nice :)

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