WP_Theme_JSON::is_safe_css_declaration() WordPress Method

The WP_Theme_JSON::is_safe_css_declaration() method is a safety check to ensure that a given CSS declaration is not going to cause any problems when included in a WordPress theme. This is important because some CSS declarations can conflict with other parts of the WordPress code, or cause unexpected results. By checking to see if a declaration is safe before including it in a theme, we can avoid these problems.

WP_Theme_JSON::is_safe_css_declaration( string $property_name, string $property_value ) #

	protected static function is_safe_css_declaration( $property_name, $property_value ) {
		$style_to_validate = $property_name . ': ' . $property_value;
		$filtered          = esc_html( safecss_filter_attr( $style_to_validate ) );
		return ! empty( trim( $filtered ) );
	}