PHP file Upload progress bar two implementation methods code _ PHP Tutorial

Php file Upload progress bar code. Currently, I know two methods. one is to use the APC extension module written by RasmusLerdorf, the founder of PHP, to implement (pecl. php. netpackageapc), the other method is to use PECL expansion currently I know there are two ways, one is to use PHP founder Rasmus Lerdorf write APC extension module to implement (http://pecl.php.net/package/apc ), another way is to use the PECL extension module uploadprogress implementation (http://pecl.php.net/package/uploadprogress) I here are two examples of implementation respectively for reference, more flexible application according to their own needs to modify.

APC implementation method:

Install APC by referring to the official documentation. you can use the PECL module to install APC quickly and easily.
Configure php. ini and set the parameter apc. rfc1867 = 1 to enable APC to support the upload progress bar function, which is described in the APC source code instructions.
Sample code:

The code is as follows:

If ($ _ SERVER ['request _ method'] = 'post') {// upload REQUEST
$ Status = apc_fetch ('upload _ '. $ _ POST ['apc _ UPLOAD_PROGRESS']);
$ Status ['Done'] = 1;
Echo json_encode ($ status); // ajax call output to the user's page. please find the relevant documentation
Exit;
} Elseif (isset ($ _ GET ['SS SS _ key']) {// read the upload progress
$ Status = apc_fetch ('upload _ '. $ _ GET ['SS SS _ key']);
Echo json_encode ($ status );
Exit;
} Else {
// Other code, such as uploading a form
}

Implementation of the uploadprogress module:

Use the PECL module installation method to install this module
Set uploadprogress. file. filename_template = "/tmp/upd_%s.txt" in php. ini"
Sample code:

The code is as follows:

If ($ _ SERVER ['request _ method'] = 'post '){
If (is_uploaded_file ($ _ FILES ['upfile'] ['tmp _ name']) {
$ Upload_dir = 'Your _ path /';
$ Ext = strrchr ($ _ FILES ['video'] ['name'], '.');
$ Sessid = $ _ POST ['upload _ IDENTIFIER '];
$ Tmpfile = $ upload_dir. $ sessid;
$ Sessfile = $ upload_dir. $ sessid. $ ext;
If (move_uploaded_file ($ _ FILES ['upfile'] ['tmp _ name'], $ tmpfile )){
// Upload successful
} Else {
// Upload failed
} Else {
// Upload error

} Elseif (! Empty ($ _ GET ['sessid ']) {
Header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT ");
Header ("Last-Modified:". gmdate ("D, d m y h: I: s"). "GMT ");
Header ("Cache-Control: no-store, no-cache, must-revalidate ");
Header ("Cache-Control: post-check = 0, pre-check = 0", false );
Header ("Pragma: no-cache ");
Header ("Content-Type: text/html; charset = UTF-8 ");

$ Unique_id = $ _ GET ['sessid'];
$ Uploadvalues = uploadprogress_get_info ($ unique_id );

If (is_array ($ uploadvalues )){
Echo json_encode ($ uploadvalues );
} Else {
// Read progress failed. additional processing logic
}

} Else {
// Display the upload form
}

Lift (http://pecl.php.net/package/apc), another way is to use PECL extension...