Handle images uploaded using multi file select using PHP in serverside

Multi file upload via ajax can be implemented using jQuery. You can find the detailed documentation here.

OR copy & paste the following link to address bar of your browser

http://customphpfunctions.blogspot.in/2014/12/multi-file-select-preview-without.html

<?php
/**
 * Function to save images uploaded from content tab using bulk upload
 *
 * @return multitype:array
 */
public function save_uploaded_files()
{
    $response = array('status' => 0, 'message' => '');
    $posted_data = $_POST;
    $user_name = $posted_data['username'];
    $config['allowed_types'] = array('gif','jpg', 'jpeg', 'jpe', 'png');
    $config['upload_path'] = getcwd().'/uploadpath/';

    $values = array();
    $originalFileName = '';
    try {
        $fileDetails = $this->process_uploaded_file($originalFileName, $values, $user_id);
    } catch (Exception $e) {
        $response['message'] = 'Something went wrong. Please try again later';

        return $response;
    }
    $response['status'] = 1;
    $response['message'] = 'Files saved';
    foreach ($fileDetails as $details) {
        $response['file_info'][] = array(
            'original' => $details['uploaded_file_name'],
            'target' => $details['target_name'],
        );
    }

    return $response;
}

/**
 * Function to move uploaded file to target location
 *
 * @param string $fileName
 * @param array $values pass by reference
 *
 * @return string file name
 */
public function process_uploaded_file()
{ 
    $bulk_upload = $_POST['bulk_upload'];
    $config['upload_path'] = getcwd().'/uploaded/';
    $config['allowed_types'] = array('gif','jpg', 'jpeg', 'jpe', 'png');
    $uploaded_file_info = false;
    $number_of_images = get_number_of_images_uploaded($_FILES['image_uploader_multiple']);
    if ($number_of_images > 0) {
        foreach ($_FILES['image_uploader_multiple']['name'] as $key => $uploaded_file_name) {
            $uploaded_path_parts = pathinfo($uploaded_file_name);
            $temp_name = $_FILES['image_uploader_multiple']['tmp_name'][$key];
            $fileName = uniqid('', true).".".date("YmdHis").".".sprintf("%06d",rand());
            $fileFullName = $fileName.".".$uploaded_path_parts['extension'];
            $target_path_parts = pathinfo($fileName);
            $target_file_name = $target_path_parts['filename'].'.'.$uploaded_path_parts['extension'];

            $i = 1;
            while (file_exists($config['upload_path'].$target_file_name)) {
                $target_file_name = $target_path_parts['filename'].'-'.($i++).'.'.$uploaded_path_parts['extension'];
            }
          
            $config['file_name'] = $target_file_name;
            move_uploaded_file($temp_name, $config['upload_path'].$target_file_name);
            chmod_apply($config['upload_path'].$target_file_name);

            $uploaded_file_info[] = array(
                'target_name' => $target_file_name,
                'uploaded_file_name' => $uploaded_file_name
            );
         }
    }

    return $uploaded_file_info;
}

/**
 * Function to get number of images uploaded
 *
 * @param array $image_uploader_multiple
 *
 * @return number
 */
function get_number_of_images_uploaded($image_uploader_multiple)
{
    $count = 0;
    if (isset($image_uploader_multiple['error']) && is_array($image_uploader_multiple['error'])) {
        foreach($image_uploader_multiple['error'] as $error) {
            if ($error != 4) {
                $count++;
            }
        }
    }

    return $count;
}

/**
 * Function to apply proper permission to the upload file
 *
 * @param $filename
 * @return bool
 */
function chmod_apply($filename = '') {
    $stat = @ stat(dirname($filename));
    $perms = $stat['mode'] & 0007777;
    $perms = $perms & 0000666;
    if ( @chmod($filename, $perms) )
        return true;
    return false;
}