PHP OOP 从 PHP5.6 迁移到 7.2 后，mysql INSERT 查询不再起作用

Question

我对 PHP OOP 很陌生。 但是在从 5.6 迁移到 PHP7.2 并将 MSQL 迁移到 MSQLi 之后，INSERT 查询不再起作用。

ClassDBCon.inc.php

class Dbh {
  private $dbhost;
  private $dbuser;
  private $dbpass;
  private $dbname;

  protected function connect() {
    $this->dbhost = "127.0.0.1:3307";
    $this->dbuser = "root";
    $this->dbpass = "mypassword";
    $this->dbname = "mydatabase";

    $conn = new mysqli($this->dbhost, $this->dbuser, $this->dbpass, $this->dbname);
    if(mysqli_connect_errno())
    {
        echo "failed to connect to mysql:" . mysqli_connect_error();
    }

    return $conn;
  }

}

ClassProjects.inc.php

    class Projects extends Dbh{

        public function CreateNewProject($projectnr,$projectname,$iprange,$language,$pm,$hwe,$swe,$amount_cpu,$amount_hmi) {

            //Add new project
            $sql = $this->connect()->query("INSERT INTO tbl_projects(no,name,status,ip,language,pm,hwe,swe,amount_cpu,amount_hmi)
            VALUES('$projectnr','$projectname','1','$iprange','$language','$pm','$hwe','$swe','$amount_cpu','$amount_hmi')");

            MsgBox("Project successfully created");

            return $sql;
        }
}

在同一个 ClassProjects 中，我使用 SELECT 和 UPDATE 查询，这很好用。

有什么建议？

Answer 1

您将 oop 和程序版本混合在一起，这就是它不起作用的原因。

让它工作你需要这样写：

$sql = "INSERT INTO tbl_projects(no,name,status,ip,language,pm,hwe,swe,amount_cpu,amount_hmi)
        VALUES('$projectnr','$projectname','1','$iprange','$language','$pm','$hwe','$swe','$amount_cpu','$amount_hmi')";

$this->connect()->query($sql);

编辑：

如果要存储通知，请将其添加到 if 语句中，如下所示：

if($this->connect()->query($sql) {
    MsgBox("Project successfully created");
}