警報重複記錄

Question

我上傳CSV代碼是這樣想提醒重複記錄它們已存在於數據庫我得到與$狀態變量的結果我應該怎麼做，提醒每一個重複的記錄是什麼方式提醒每重複記錄

if(isset($_POST["Import"])) 
{ 
    $filename=$_FILES["file"]["tmp_name"]; 
    if($_FILES["file"]["size"] > 0) 
    { 

    $row = 1; 
    if (($handle = fopen("$filename", "r")) !== FALSE) 
    { 
     while (($data = fgetcsv($handle)) !== FALSE) 
     { 
      $num = count($data); 

      $row++; 
      for ($c=0; $c < $num; $c++) { 

        if($c!="" && $c+1!="" && $c+2!=""){    
        $a[] = $data[$c]; 

        }   
      } 
     } 
     $total = count($a); 
     $m=0; 
     $k = 1; 
     for ($c=0; $c < $total; $c++) 
     { 

      $address[$m][] = $a[$c] ; 
      $z = $address[$m][0]; 
      $q = $address[$m][1]; 
      $q .= $address[$m][2]; 
      $q .= $address[$m][3]; 
      $q .= $address[$m][4]; 
      $q .= $address[$m][5]; 
      $q .= $address[$m][6]; 
      $q .= $address[$m][7]; 
      $q .= $address[$m][8]; 
      $q .= $address[$m][9]; 
      if($a[$c]=="") 
      { 
       if($k!=1) 
       { 

       $selectcon = "SELECT user_id FROM contact 
           WHERE user_id = '".$z."'"; 

       $selectRes = mysql_query($selectcon); 
       if($rows = mysql_fetch_array($selectRes)) 
       { 
        $user_id = $rows['user_id']; 

        if($user_id == $z) 
        { 
        $staus = 1; 
        } 
        else 
        { 
        $staus = 1; 
        } 
       } 

        $insertParty = "INSERT INTO contact(user_id)values('$z')"; 
        $res = mysql_query($insertParty); 
        $contact_id = mysql_insert_id(); 


        $insertAddress = "INSERT INTO address(contact_id,address)VALUES($contact_id,'$q')"; 
        $insertAddressRes = mysql_query($insertAddress); 
        if(!$insertAddressRes) 
        { 
        echo "<sctipt>"; 
        echo "sweetAlert('oops','Import Data Fail','error')"; 
        echo "</sctipt>"; 
        } 
        else 
        { 
        echo "<script>"; 
        echo "swal('Sucess!', 'File Imported Sucessfully!','success')"; 
        echo "</script>"; 
        } 
        $m++; 
       } 
       $k++; 

      } 

     } 
     fclose($handle); 
    } 
    } 
} 
?> 

Answer 1

您需要在數據庫中創建一個唯一的行。你不能用PHP來完成。

添加所有列到一個唯一索引，則不能插入該表中重複的行。