php - "fopen(): Filename cannot be empty" and "fgetcsv() expects parameter 1 to be resource, boolean given" errors when uploading large csv files -


i'm getting these 2 errors when try upload large csv file. i'm not sure if errors being caused large file i'm using same script below page uploads different set of csvs , works fine. difference can see file size , number of entries on csv.

my script:

if(isset($_post["submit"])){ $file = $_files['file']['tmp_name']; $handle = fopen($file, "r"); $c = 1; $x = 0;  $result = mysqli_query($conn, 'truncate table testreftb');  if ($result) {     echo "reference table has been truncated. <br/>";   } else echo "something went wrong: " . mysql_error();   while(($filesop = fgetcsv($handle, 10000, ",")) !== false){     $lifex = $filesop[0];     $healthx = $filesop[1];     $autoom = $filesop[2];     $solar = $filesop[3];     $himp = $filesop[4];     $phone = $filesop[5];      $sql = "insert reftb (lifex, healthx, autoomit, solarzips, himpzips, homephone)     values ('$lifex','$healthx','$autoom','solar','himp','phone');";         if (mysqli_multi_query($conn, $sql))  {         $x ++;         $msg = $x . " new entries added.";     } else {         $msg = "encountered , error while adding entires.";     }  }echo $msg . mysqli_error($conn);}

also reason, last 3 columns not imputed numbers entries on csvs. caused formulas in csv? thanks


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