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is_preview › WordPress Function

Since2.0.0
Deprecatedn/a
› is_preview ( No parameters )
Returns:
  • (bool) Whether the query is for a post or page preview.
Defined at:
Codex:

Determines whether the query is for a post or page preview.

For more information on this and similar theme functions, check out the {@link https://developer.wordpress.org/themes/basics/conditional-tags/} article in the Theme Developer Handbook.


Related Functions: _set_preview, post_preview, is_customize_preview, is_redirect, _show_post_preview

Source 

function is_preview() {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
		return false;
	}

	return $wp_query->is_preview();
}