通过网址在php上传图片

Question

i have this form to upload images:

<form method="post" action="upld.php" name="insertForm"  enctype="multipart/form-data">
Image name:<br />
<input type="text" name="iname" /><br />
<input type="file" name="file" />
<input type="submit" name="upload" value="Upload" />

</form>

and here is the upld.php

<?php
$db_name = "DB_name";
$table_name = "tble";
$connection = mysql_connect("localhost", "root", "") or die(mysql_error());
$db = mysql_select_db($db_name, $connection) or die(mysql_error());

if(isset($_POST['upload'])){

 if  (($_FILES["file"]["error"] > 0))
    {
echo "<h3> Error in File! </h3>";
    }
  else
    {
    if ((file_exists("images/" . $_FILES["file"]["name"])) )
      {
      echo "<h3> file not exsists!</h3>";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "images/" . $_FILES["file"]["name"]);

//$id=mysql_insert_id();
$time=strftime("%Y-%m-%d %H:%M:%S", time());
$img_name=$_POST['iname'];
$img=$_FILES["file"]["name"];
$sql="INSERT INTO $table_name VALUES('{$img}','{$time}','{$img_name}')";
$result=mysql_query($sql,$connection);
mysql_close($connection);
echo "<h3>uploaded successfully</h3>";
}
}
}
echo "<br><br><a href='GalleryAdmin.php'>GO back to Admin Gallery</a>
";
?> 

the problem is:

when i run it always say me file not exsist, acording to this if

 if ((file_exists("images/" . $_FILES["file"]["name"])) )
      {
      echo "<h3> file not exsists!</h3>";

i have the images folder with upld.php in the same folder

what would you guess is the problem?

Answer 1

I think you have a slight logical error

file_exists("images/" . $_FILES["file"]["name"])

Will return true if the file exists in the images folder (my guess would me if somebody already uploaded it). But, based on your log statement, what you want is

!file_exists("images/" . $_FILES["file"]["name"])