move_uploaded_file权限被拒绝

I'm getting error in uploading image to directory folder named images. Though I created a folder images.

Error Occur

1. Warning: move_uploaded_file(images/Rachel Leigh Cook.jpg): failed to open stream: 
2. Permission denied in /usr/home/mer/public_html/salico/ZNote/php/image_upload_do.php 
3. Unable to move '/var/tmp/phpGV5fVF' to 'imagesRachel Leigh Cook.jpg' in 
   /usr/home/mer/public_html/salico/ZNote/php/image_upload_do.php 

My code

$upfile = ( isset( $_FILES['userfile'] ) ) ? $_FILES['userfile'] : '' ;

if ( is_array( $upfile ) ) {

    $file_name = $upfile['name'];
    $file_temp = $upfile['tmp_name'];

    $dir_file = 'images/'.$file_name;

    if ( is_uploaded_file( $file_temp ) ) {

        if ( move_uploaded_file( $file_temp, $dir_file ) ) {
            echo 'Successfully Uploaded';
        } else {
            echo 'Failed to upload';
        }
    }
}

I think there is nothing wrong in my code. Do I need to edit the php.ini file?

Try to run chmod for images folder like this :

chmod -R 777 images 

And also on php folder chmod -R 777 php

run chmod command to path folder.

Go to respective folder .. in this case images and run.

chmod -R 777