I am trying to change the stylesheet file version using the filemtime() function with the wp_enqueue_style with the following snippet

function pro_styles()
{
wp_enqueue_style( 'child-style', get_stylesheet_directory_uri() .'/child-style.css', array(), filemtime(get_stylesheet_directory_uri() .'/child-style.css'), 'all' );
}

add_action( 'wp_enqueue_scripts', 'pro_styles' );

but it is throwing a warning

Warning: filemtime(): stat failed for.....

While i am sure that the file exists

I am trying to change the stylesheet file version using the filemtime() function with the wp_enqueue_style with the following snippet

function pro_styles()
{
wp_enqueue_style( 'child-style', get_stylesheet_directory_uri() .'/child-style.css', array(), filemtime(get_stylesheet_directory_uri() .'/child-style.css'), 'all' );
}

add_action( 'wp_enqueue_scripts', 'pro_styles' );

but it is throwing a warning

Warning: filemtime(): stat failed for.....

While i am sure that the file exists

• theme-development
• cache

Share Improve this question asked Aug 9, 2017 at 9:44 Mohamed OmarMohamed Omar 51911 gold badge55 silver badges1717 bronze badges

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2 Answers 2

Sorted by: Reset to default 29

It's because you're retrieving it via URL, but filemtime() requires a path. Use get_stylesheet_directory() instead. That returns a path:

function pro_styles()
{
wp_enqueue_style( 'child-style', get_stylesheet_directory_uri() .'/child-style.css', array(), filemtime(get_stylesheet_directory() .'/child-style.css'), 'all' );
}

add_action( 'wp_enqueue_scripts', 'pro_styles' );

Just to expand on Jacob Peattie Answer for people that have CSS file in a custom plugin, you can use

filemtime( plugin_dir_path(dirname(__FILE__)).'plugin-folder/css-file-path.css' )