PHP Single File upload and multiple file uploads

PHP Upload file steps
1. Determine if the file is a form submission
2. Determine if there is a selection file
3. Determine if the file storage path exists
4. Determine if the file type matches
5. Determine the type of error
6. Determine if a temporary file exists
7. Determine if the upload was successful

Required files to be uploaded are word and ppt type

Single File Upload code:

<?
Print_r ($_files);
Extract ($_files["F1"]);
Determine if the form is being uploaded
if (!isset ($_post["sub"])) {
Exit ("Please upload via form");
}
Determine if there is a file upload
if (empty ($name)) {
Exit ("Please select File");
}
Determine if a folder exists
$dir = "f:/file/upload/";
if (!is_dir ($dir)) {
mkdir ($dir, 0777,true);
}
Determine if the document meets the requirements
$arr =array ("Doc", "docx", "xls", "xlsx", "ppt", "pptx");
$type =substr (STRRCHR ($name, "."), 1);
if (!in_array ($type, $arr)) {
Exit ("File type does not match");
}
Judging error messages
Switch ($error) {
Case 1:
echo "exceeds the size of server settings";
Break
Case 2:
echo "exceeds the size of hidden field settings";
Break
Case 3:
echo "partial file Upload";
Break
Case 4:
echo "no file Upload";
Break
Case 6:
echo "Temp folder does not exist";
Break
Case 7:
echo "Error writing to Folder";
Break
}
Determine if a temporary file exists
if (!is_uploaded_file ($tmp _name)) {
Exit ("Temporary file does not exist");
}
Determine if the file was uploaded successfully
$path = $dir. Rand (1000,9000). ".". $type;
if (!move_uploaded_file ($tmp _name, $path)) {
Exit ("File upload failed");
}else{
echo "File upload succeeded";
}

?>

Multiple file uploads:

<?
Print_r ($_files);
Extract ($_files["fi"]);

Determine if a file is a form submission
if (!isset ($_post["sub"])) {
Exit ("Please submit with form");
}
Determine if there is a file upload
if (empty ($name)) {
Exit ("Please select File");
}
Determine if the upload path exists
$dir = "f:/file/upload/";
if (!is_dir ($dir)) {
mkdir ($dir, 0777,true);
}
for ($i =0; $i <count ($name); $i + +) {
Determine if the file type matches
$arr =array ("Doc", "docx", "xls", "xlsx", "ppt", "pptx");
$type =substr (STRRCHR ($name [$i], "."), 1);
if (!in_array ($type, $arr)) {
echo "{$i} file types do not match";
Continue
}
Switch ($error [$i]) {
Case 1:
echo "{$i} files exceeding the size of server settings";
Continue
Case 2:
echo "{$i} files exceeding the size of hidden domain settings";
Continue
Case 3:
echo "{$i} files part of file upload";
Continue
Case 4:
echo "{$i} files without file upload";
Continue
Case 6:
echo "{$i} files temporary file does not exist";
Continue
Case 7:
echo "{$i} files write to folder error";

  continue;

}
Determine if a temporary file exists
if (!is_uploaded_file ($tmp _name[$i])) {
echo "Temporary file does not exist";
Continue
}
Determine if the upload was successful
$path = $dir. Rand (1000,9000). ".". $type;
if (!move_uploaded_file ($tmp _name[$i], $path)) {
echo "{$i} file upload failed";
Continue
}else{
echo "Upload success";
}

}
?>

PHP Single File upload and multiple file uploads