<?php 
// Define file upload path 
$upload_dir = array( 
    'img'=> 'uploads/', 
); 
 
// Allowed image properties  
$imgset = array( 
    'maxsize' => 5000, 
    'maxwidth' => 4096, 
    'maxheight' => 3000, 
    'minwidth' => 10, 
    'minheight' => 10, 
    'type' => array('bmp', 'gif', 'jpg', 'jpeg', 'png'), 
); 
 
// If 0, will OVERWRITE the existing file 
define('RENAME_F', 1); 
 
$site = ''; 
 
/** 
 * Set filename 
 * If the file exists, and RENAME_F is 1, set "img_name_1" 
 * 
 * $p = dir-path, $fn=filename to check, $ex=extension $i=index to rename 
 */ 
function setFName($p, $fn, $ex, $i){ 
    if(RENAME_F ==1 && file_exists($p .$fn .$ex)){ 
        return setFName($p, F_NAME .'_'. ($i +1), $ex, ($i +1)); 
    }else{ 
        return $fn .$ex; 
    } 
} 
 
$re = ''; 
if(isset($_FILES['upload']) && strlen($_FILES['upload']['name']) > 1) { 
 
    define('F_NAME', preg_replace('/\.(.+?)$/i', '', basename($_FILES['upload']['name'])));   
 
    // Get filename without extension 
    $sepext = explode('.', strtolower($_FILES['upload']['name'])); 
    $type = end($sepext);    /** gets extension **/ 
     
    // Upload directory 
    $upload_dir = in_array($type, $imgset['type']) ? $upload_dir['img'] : $upload_dir['audio']; 
    $upload_dir = trim($upload_dir, '/') .'/'; 
 
    // Validate file type 
    if(in_array($type, $imgset['type'])){ 
        // Image width and height 
        list($width, $height) = getimagesize($_FILES['upload']['tmp_name']); 
 
        if(isset($width) && isset($height)) { 
            if($width > $imgset['maxwidth'] || $height > $imgset['maxheight']){ 
                $re .= ' Width x Height = '. $width .' x '. $height .' >>> The maximum Width x Height must be: '. $imgset['maxwidth']. ' x '. $imgset['maxheight']; 
            } 
 
            if($width < $imgset['minwidth'] || $height < $imgset['minheight']){ 
                $re .= ' Width x Height = '. $width .' x '. $height .' >>> The minimum Width x Height must be: '. $imgset['minwidth']. ' x '. $imgset['minheight']; 
            } 
 
            if($_FILES['upload']['size'] > $imgset['maxsize']*1000){ 
                $re .= ' >>> Maximum file size must be: '. $imgset['maxsize']. ' KB.'; 
            } 
        } 
    }else{ 
        $re .= 'The file: '. $_FILES['upload']['name']. ' has not the allowed extension type.'; 
    } 
     
    // File upload path 
    $f_name = setFName($_SERVER['DOCUMENT_ROOT'] .'/'. $upload_dir, F_NAME, ".$type", 0); 
    $uploadpath = $upload_dir . $f_name; 
 
    // If no errors, upload the image, else, output the errors 
    if($re == ''){ 
        if(move_uploaded_file($_FILES['upload']['tmp_name'], $uploadpath)) { 
            $url = $site.'ckeditor/'. $upload_dir . $f_name; 
            $msg = F_NAME .'.'. $type .' successfully uploaded! >>> Size: '. number_format($_FILES['upload']['size']/1024, 2, '.', '') .' KB'; 
            $response = [ 
                'url' => $url 
            ]; 
        }else{ 
            $response = [ 
                'error' => [ 
                    'message' => 'Unable to upload the file!' 
                ] 
            ]; 
        } 
    }else{ 
        $response = [ 
            'error' => [ 
                'message' => 'Error: '.$re 
            ] 
        ]; 
    } 
} 
 
// Return response in JSON format 
echo json_encode($response); 
?>
