how to check if the file is uploaded already in php codeigniter

Question

i have to upload a file and insert the data into tables.i am done with that part. now,i want to check whether the file has been already uploaded or not. if so,alert should be thrown.

    if(isset($_POST["submit"]))
    {
    if($_FILES['file']['name'])
    {
        $filename = explode(".", $_FILES['file']['name']);
        $a=$filename[0];
        foreach($a as $b){
        if($b==$filename[0]){
                            echo"file already uploaded";
                            }
                          }
     }
   }

It is not clear what your actual problem is. Please elaborate. — yakobom, Aug 01 '17 at 05:22
@yakobom i sholud not upload the file which is already been uploaded. — dodo, Aug 01 '17 at 05:25
@ankitsuthar no am just want to check if the file's records has already been inserted into the database or not — dodo, Aug 01 '17 at 07:16
see this so [question](https://stackoverflow.com/questions/27939712/file-exists-not-working-codeigniter) may be it helps — always-a-learner, Aug 01 '17 at 07:39

score 0 · Accepted Answer · answered Aug 01 '17 at 07:51

             if($filename[1] == 'csv')
                                    {

                                         $fp = fopen($_FILES['file']['tmp_name'],'r') or die("can't open file");
                                         $a=$filename[0];
                                         echo $a;
                                         $query1 = $this->db->query("SELECT * from table WHERE table.filename='".$a."'");
                                         $b=$query1->num_rows();
                                         if($b>0)

                                         {
                                            echo "<script type='text/javascript'>alert('FILE ALREADY BEEN UPLOADED')</script>";
                                         }
              else{
                  }

i did add a column filename to the table where the records being uploaded. — dodo, Aug 01 '17 at 07:52

how to check if the file is uploaded already in php codeigniter

1 Answers1