Question

我想将for循环的结果作为数组存储在变量中 $res。我该怎么办？

<?php
    $servername = "localhost";
    $username = "root";
    $password = "";
    $name =  "abc";

    $con = new mysqli ($servername, $username, $password, $name);

    $sql1 = $con->query("SELECT (status) FROM `seita`"); 

    $i = $sql1->num_rows;
    echo $i;

    for($x=1; $x<=$i; $x++)
    {
        echo $x;
        $sql = $con->query("SELECT status FROM `seita` WHERE RollNo = '$x'");
        $res = mysqli_fetch_row($sql);
    }
?>

Rohit Mittal给出的答案使我无法进行字符串转换。接下来我该怎么办？

Answer 1

您可以使用fetch_all()的mysqli在一个查询中获取所有内容

$servername = "localhost";
$username = "root";
$password = "";
$name =  "abc";
$con = new mysqli ($servername, $username, $password, $name);
$result = $con->query("SELECT status FROM `seita`")->fetch_all();

Answer 2

您可以尝试全部一行完成所有操作。也许与此类似：

$res = $con->query("SELECT status 
    FROM `seita` 
    WHERE RollNo between 1 and (
        SELECT count(status) 
        FROM `seita`
    ) 
")->fetch_all();

Answer 3

您需要制作一个数组，并且只需要获取以下状态值：

def evaluate_compliance():
  sns_client = boto3.client('sns')
  response = sns_client.list_topics()
  topics = [topic['TopicArn'] for topic in response['Topics']]
  for topic_dict in topics:
      response = sns_client.list_topics()
      response_topic_attributes_dict = sns_client.get_topic_attributes(TopicArn=topic_dict['TopicArn'])

Answer 4

您要附加到数组搜索Google func configureCellFromSwiftUIView(cell: UITableViewCell, rootView: AnyView){ let swiftUICellViewController = UIHostingController(rootView: rootView) cell.layoutIfNeeded() cell.selectionStyle = UITableViewCell.SelectionStyle.none self.addChild(swiftUICellViewController) cell.contentView.addSubview(swiftUICellViewController.view) swiftUICellViewController.view.translatesAutoresizingMaskIntoConstraints = false cell.contentView.addConstraint(NSLayoutConstraint(item: swiftUICellViewController.view!, attribute: NSLayoutConstraint.Attribute.leading, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cell.contentView, attribute: NSLayoutConstraint.Attribute.leading, multiplier: 1.0, constant: 0.0)) cell.contentView.addConstraint(NSLayoutConstraint(item: swiftUICellViewController.view!, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cell.contentView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: 0.0)) cell.contentView.addConstraint(NSLayoutConstraint(item: swiftUICellViewController.view!, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cell.contentView, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 0.0)) cell.contentView.addConstraint(NSLayoutConstraint(item: swiftUICellViewController.view!, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cell.contentView, attribute: NSLayoutConstraint.Attribute.bottom, multiplier: 1.0, constant: 0.0)) swiftUICellViewController.didMove(toParent: self) swiftUICellViewController.view.layoutIfNeeded()中，该搜索给出php array append

array_push($stack, "apple", "raspberry");

如何将for循环的结果作为数组存储在res变量中？

4 个答案: