Are these steps correct and standard way to upload images into a table?

I check the posts about uploading images from browser. No one give me a
whole procedure how to do it. My friend told me I can upload binary/image
file using following steps:

I want to know are these steps standard steps that insert images into a
table?

Step 1 upload it
<FORM METHOD=POST ACTION="" enctype="multipart/form-data">
<tr><td>upload </TD><TD><input type="file" name="pic"
size=40></td></tr></form>

<?
if($pic_name != '')
{
$len = strlen($pic_name)-4;
$ext = substr($pic_name,$len);
$ext = strtolower($ext);

$File="/www/pics/test".$ext;
exec("cp $pic $File");
}

?>

Step 2 Read it
$fd = fopen($img_name, "r");
while ($post_file = fread($fd, 4096))
{
$filestuff .= $post_file;
}
fclose($fd);

Step 3 insert or update into the table using insert or update

Are these steps correct or the standard way to upload images into a table?

Thanks.

Zhidian Du

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