WordPress at a glance
function is not described

user_can_richedit() WP 2.0.0

Whether the user can access the visual editor.

Checks if the user can access the visual editor and that it's supported by the user's browser.

  • Global. true/false. $wp_rich_edit Whether the user can access the visual editor.
  • Global. true/false. $is_gecko Whether the browser is Gecko-based.
  • Global. true/false. $is_opera Whether the browser is Opera.
  • Global. true/false. $is_safari Whether the browser is Safari.
  • Global. true/false. $is_chrome Whether the browser is Chrome.
  • Global. true/false. $is_IE Whether the browser is Internet Explorer.
  • Global. true/false. $is_edge Whether the browser is Microsoft Edge.
Hooks in function
Return

true/false. True if the user can access the visual editor, false otherwise.

Usage

user_can_richedit();

Code of user can richedit: wp-includes/general-template.php VER 5.0.3

<?php
function user_can_richedit() {
	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE, $is_edge;

	if ( !isset($wp_rich_edit) ) {
		$wp_rich_edit = false;

		if ( get_user_option( 'rich_editing' ) == 'true' || ! is_user_logged_in() ) { // default to 'true' for logged out users
			if ( $is_safari ) {
				$wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval( $match[1] ) >= 534 );
			} elseif ( $is_IE ) {
				$wp_rich_edit = ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Trident/7.0;' ) !== false );
			} elseif ( $is_gecko || $is_chrome || $is_edge || ( $is_opera && !wp_is_mobile() ) ) {
				$wp_rich_edit = true;
			}
		}
	}

	/**
	 * Filters whether the user can access the visual editor.
	 *
	 * @since 2.1.0
	 *
	 * @param bool $wp_rich_edit Whether the user can access the visual editor.
	 */
	return apply_filters( 'user_can_richedit', $wp_rich_edit );
}