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

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
– yakobom, Commented Aug 1, 2017 at 5:22
@yakobom i sholud not upload the file which is already been uploaded. — dodo
– dodo, Commented Aug 1, 2017 at 5:25
@ankitsuthar no am just want to check if the file's records has already been inserted into the database or not — dodo
– dodo, Commented Aug 1, 2017 at 7:16

dodo · Accepted Answer · 2017-08-01 07:51:18Z

 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.

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