php move_uploaded_file forcely gives new name - php

Question

I am trying to upload file using php, code snippt
$upload_path = "/var/upload/" . $_FILES['mfile']['name'];
if(move_uploaded_file($_FILES['mfile']['tmp_name'], $upload_path))
echo "file uploaded";
else
echo "upload failed";
Note: that /var/upload directory exists and has 777 permission.
The code prints "upload failed"
When I check /var/upload directory, there is file f_505bf77bd8a0f_mypdf.pdf. What went wrong?
Added log ( as per requested by loler):
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined variable: showdebug in /Volumes/data/htdocs/ebeu/upload.php on line 558, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined variable: showdebug in /Volumes/data/htdocs/ebeu/upload.php on line 559, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: accessories in /var/www/my/web/folder/myupload.php on line 21, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: pmaterial in /var/www/my/web/folder/myupload.php on line 27, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: occupation_bwc in /var/www/my/web/folder/myupload.php on line 33, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: occupation_bwc in /var/www/my/web/folder/myupload.php on line 75, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: occupation_spec in /var/www/my/web/folder/myupload.php on line 75, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined index: babycarrier in /var/www/my/web/folder/myupload.php on line 78, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined variable: accessories_all in /var/www/my/web/folder/myupload.php on line 79, referer: http://localhost/upload/test/upload.php
[Fri Sep 21 10:58:31 2012] [error] [client ::1] PHP Notice: Undefined variable: pmaterials_all in /var/www/my/web/folder/myupload.php on line 80, referer: http://localhost/upload/test/upload.php
Added var_dump($_FILES)
array(1) {
["mfile"]=>
array(5) {
["name"]=>
string(23) "mypdf.pdf"
["type"]=>
string(15) "application/pdf"
["tmp_name"]=>
string(26) "/var/tmp/phpUl6k50"
["error"]=>
int(0)
["size"]=>
int(478704)
}
}

Answer 1

Try this code for upload your files..
if (file_exists("/var/upload/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
"/var/upload/" . $_FILES["file"]["name"]);
echo "Stored in: " . "/var/upload/" . $_FILES["file"]["name"];
}

Answer 2

In your var_dump() there $_FILES["file"]["name"] length is 23, but it should be 9. so try to trim this string. instead of
$upload_path = "/var/upload/" . $_FILES['mfile']['name'];
try to write
$upload_path = "/var/upload/" . trim($_FILES['mfile']['name']);