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wp_sizes_attribute_includes_valid_auto › WordPress Function

Since6.7.0
Deprecatedn/a
› wp_sizes_attribute_includes_valid_auto ( $sizes_attr )
Parameters:
  • (string) $sizes_attr The 'sizes' attribute value.
    Required: Yes
Returns:
  • (bool) True if the 'auto' keyword is present, false otherwise.
Defined at:
Codex:

Checks whether the given 'sizes' attribute includes the 'auto' keyword as the first item in the list.

Per the HTML spec, if present it must be the first entry.


Related Functions: wp_get_active_and_valid_themes, wp_get_active_and_valid_plugins, wp_kses_uri_attributes, wp_sanitize_script_attributes, wp_is_site_initialized

Source 

function wp_sizes_attribute_includes_valid_auto( string $sizes_attr ): bool {
	list( $first_size ) = explode( ',', $sizes_attr, 2 );
	return 'auto' === strtolower( trim( $first_size, " \t\f\r\n" ) );
}