Question

我正在进行高级搜索但遇到错误

致命错误：无法访问空属性*$this->$Personnummer*

这是我的控制器：

<?php
include 'c:/wamp/www/mvc/model/SearchProcessor.php';
// if the user clicks the submit button, it sends its name values here and if not empty, binds them to $data.
        if(isset($_POST['button'])) {

                if($_POST['name'] !='');
                {
                        $data['name'] = $_POST['name'];
                }

                if($_POST['lastname'] !='');
                {
                        $data['lastname'] = $_POST['lastname'];
                }


                if($_POST['Personnummer_search'] !='');
                {
                        $data['Personnummer'] = $_POST['Personnummer_search'];
                }

                if($_POST['Kon_search'] !='');
                {
                        $data['Kon_search'] = $_POST['Kon_search'];
                }

                if($_POST['Anvands_search'] !='');
                {
                        $data['Anvands_search'] = $_POST['Anvands_search'];
                }

                if($_POST['Lan_search'] !='');
                {
                        $data['Lan_search'] = $_POST['Lan_search'];
                }

                if($_POST['Processormodell_search'] !='');
                {
                        $data['Processormodell_search'] = $_POST['Processormodell_search'];
                }

                if($_POST['Sida_search'] !='');
                {
                        $data['Sida_search'] = $_POST['Sida_search'];
                }

                if($_POST['utlamnat_search'] !='');
                {
                        $data['utlamnat_search'] = $_POST['utlamnat_search'];
                }

                if($_POST['ProcessorSerie_search'] !='');
                {
                        $data['ProcessorSerie_search'] = $_POST['ProcessorSerie_search'];
                }

                if($_POST['Tillverkare_search'] !='');
                {
                        $data['Tillverkare_search'] = $_POST['Tillverkare_search'];
                }


                $displayResults = new SearchProcessor($db,$data);
                $Results = $displayResults->getSearchResult();

以下是模型：

<?php
require_once 'Database.php';
//This class is for searching for patient and their processors
class SearchProcessor extends Database {
    private $Personnummer;
    private $TheKon;
    private $TheLan;
    private $name;
    private $TheLastname;
    private $TheProcessor;
    private $TheAnvands;
    private $TheSida;
    private $TheUtlamnat;
    private $TheSerienummer;
    private $TheTillverkare;

    //The constructor of both the parent and child class
    function __construct(mysqli $db, $data)
    {
        parent::__construct($db);
        //set data
        $this->setData($data);
        // get search result
        $this->getSearchResult();
    }
    //Sets the data
    function setData($data)
    {
        $this->name = $data['name'];
        $this->TheLastname = $data['lastname'];
        $this->Personnummer = $data['Personnummer'];
        $this->TheKon = $data['Kon_search'];
        $this->TheAnvands = $data['Anvands_search'];
        $this->TheLan = $data['Lan_search'];
        $this->TheProcessor = $data['Processormodell_search'];
        $this->TheSida =$data['Sida_search'];
        $this->TheUtlamnat =$data['utlamnat_search'];
        $this->TheSerienummer = $data['ProcessorSerie_search'];
        $this->TheTillverkare = $data['Tillverkare_search'];

    }


//This function searches each column regarding patient and its processors.
    function getSearchResult() {

        $where = array();
            $where[] =  "Patient.Patient LIKE '%".$this->$Personnummer."%'"; //<--- ERROR  Cannot access empty property 
            $where[] =  "person.Namn LIKE '%".$this->name."%'";
            $where[] =  "person.Efternamn LIKE '%".$this->TheLastname."%'";
            $where[] =  "person.Kon LIKE '%".$this->TheKon."%'";
            $where[] =  "processorpatient.Sida LIKE '%".$this->TheSida."%'";
            $where[] =  "person.Lan LIKE '%".$this->TheLan."%'";
            $where[] =  "processorpatient.Tillverkare LIKE '%".$this->TheTillverkare."%'";
            $where[] =  "processorpatient.Processor LIKE '%".$this->TheProcessor."%'";
            $where[] =  "processorpatient.Utlamnat LIKE '%".$this->TheUtlamnat."%'";
            $where[] =  "processorpatient.Anvands LIKE '%".$this->TheAnvands."%'";
            $where[] =  "processorpatient.Serienummer LIKE '%".$this->TheSerienummer."%'";

        if(count($where)) // here it counts the amount of $where and a extends the query to search deeper into the database.
        {

            $Data = array();
            $sql = "Select * from patient left join person on person.Personnummer = patient.Patient left join processorpatient on processorpatient.patientv = patient.Patient
     WHERE ".implode(" AND ",$where);
            if(!$result = $this->mysqli->query($sql)) {
                throw new exception("Error: Can not execute the query.");
            } else {
                $Count = $result->num_rows;
                if($Count>0)
                {
                    for($i=0; $i<$Count; $i++)
                    {
                        $Data[$i] = $result->fetch_assoc();
                    }
                }
            }
            return $Data;
    }

    }

}

我想要做的是将用户输入$ _POST [＆＃39;＆＃39;]分配给控制器中的变量$ data [＆＃39;＆＃39;]。然后将它应该与它们自己的私有变量绑定的模型类传递给它，在私有变量中为查询赋值。但我收到错误无法访问模型中的空属性 $this->$Personnummer

Answer 1

不使用$访问变量，就像上面定义的一样

$this->Personnummer = $data['Personnummer'];

所以请访问

$where[] =  "Patient.Patient LIKE '%".$this->Personnummer."%'";

无法访问空属性错误

1 个答案: