File not uploading in PHP - php

Question

I'm trying to upload 3 files using html and PHP, in local server it is working but when I host it, this code is not working. What may be the problem?
Here is my HTML and PHP Code:
HTML CODE:
<form name="test" id="test" action="pet_up.php" enctype="multipart/form-data" method="POST">
<input type="hidden" name="MAX_FILE_SIZE" value="5097152" />
Upload File 1:<input type='file' id='f1' name='f1'/>
Upload File 2:<input type='file' id='f2' name='f2'/>
Upload File 3:<input type='file' id='f3' name='f3'/>
<input type="submit" value="Update"/>
</form>
PHP CODE:
if(isset($_FILES['f1']['name']))
{
$image1 = $_FILES['f1']['name'];
$tmp1 = $_FILES['f1']['tmp_name'];
$pathAndName1 = "uploads/".$image1;
if(!empty($_FILES) && file_exists($tmp1) && is_uploaded_file($tmp1))
{
move_uploaded_file($tmp1,$pathAndName1);
}
else
{
$pathAndName1="";
}
echo"<script>alert(".$pathAndName1.");</script>";
$qry="update petition set f1='".$pathAndName1."'";
$result=mysql_query($qry);
}
if(isset($_FILES['f2']['name']))
{
$image2 = $_FILES['f2']['name'];
$tmp2 = $_FILES['f2']['tmp_name'];
$pathAndName2 = "uploads/".$image2;
if(!empty($_FILES) && file_exists($tmp2) && is_uploaded_file($tmp2))
{
move_uploaded_file($tmp2,$pathAndName2);
}
else
{
$pathAndName2="";
}
echo"<script>alert(".$pathAndName2.");</script>";
$qry="update petition set f2='".$pathAndName2."'";
$result=mysql_query($qry);
}
if(isset($_FILES['f3']['name']))
{
$image3 = $_FILES['f3']['name'];
$tmp3 = $_FILES['f3']['tmp_name'];
$pathAndName3 = "uploads/".$image3;
if(!empty($_FILES) && file_exists($tmp3) && is_uploaded_file($tmp3))
{
move_uploaded_file($tmp3,$pathAndName3);
}
else
{
$pathAndName3="";
}
echo"<script>alert(".$pathAndName3.");</script>";
$qry="update petition set f3='".$pathAndName3."'";
$result=mysql_query($qry);
}

Answer 1

by default, you can upload a file with 2Mb size, if you want bigger file to upload then change your php.ini file and set your value that you want to upload.

Answer 2

Please use this simplified version of your query.. This will help you debug more easily...
$count = count($_FILES);
for ($i = 1; $i <= $count; $i++)
{
if (isset($_FILES['f' . $i]['name']))
{
$image . $i= $_FILES['f' . $i]['name'];
$tmp . $i= $_FILES['f' . $i]['tmp_name'];
$pathAndName . $i= "uploads/" . $image . $i;
if (!empty($_FILES) && file_exists($tmp . $count) && is_uploaded_file($tmp . $count))
{
move_uploaded_file($tmp . $i, $pathAndName . $i);
echo 'error uploading file'.$i;
}
else
{
$pathAndName . $i= "";
}
}
if ($pathAndName . $i!= '')
{
echo"<script>alert(" . $pathAndName . $i. ");</script>";
}
$qry = mysql_query("update petition set f" . $i. "='" . $pathAndName . $i. "'");
if(!$qry)
{
echo 'error in query'.$i;
}
}