+ // Reduce the value to be within the min - max range
+ if ( $max != 0 )
+ $value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );
+
+ return abs(intval($value));
+}
+endif;
+
+if ( !function_exists('wp_set_password') ) :
+/**
+ * Updates the user's password with a new encrypted one.
+ *
+ * For integration with other applications, this function can be overwritten to
+ * instead use the other package password checking algorithm.
+ *
+ * Please note: This function should be used sparingly and is really only meant for single-time
+ * application. Leveraging this improperly in a plugin or theme could result in an endless loop
+ * of password resets if precautions are not taken to ensure it does not execute on every page load.
+ *
+ * @since 2.5.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string $password The plaintext new user password
+ * @param int $user_id User ID
+ */
+function wp_set_password( $password, $user_id ) {
+ global $wpdb;
+
+ $hash = wp_hash_password( $password );
+ $wpdb->update($wpdb->users, array('user_pass' => $hash, 'user_activation_key' => ''), array('ID' => $user_id) );
+
+ wp_cache_delete($user_id, 'users');
+}
+endif;
+
+if ( !function_exists( 'get_avatar' ) ) :
+/**
+ * Retrieve the avatar `<img>` tag for a user, email address, MD5 hash, comment, or post.
+ *
+ * @since 2.5.0
+ * @since 4.2.0 Optional `$args` parameter added.
+ *
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param int $size Optional. Height and width of the avatar image file in pixels. Default 96.
+ * @param string $default Optional. URL for the default image or a default type. Accepts '404'
+ * (return a 404 instead of a default image), 'retro' (8bit), 'monsterid'
+ * (monster), 'wavatar' (cartoon face), 'indenticon' (the "quilt"),
+ * 'mystery', 'mm', or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF),
+ * or 'gravatar_default' (the Gravatar logo). Default is the value of the
+ * 'avatar_default' option, with a fallback of 'mystery'.
+ * @param string $alt Optional. Alternative text to use in <img> tag. Default empty.
+ * @param array $args {
+ * Optional. Extra arguments to retrieve the avatar.
+ *
+ * @type int $height Display height of the avatar in pixels. Defaults to $size.
+ * @type int $width Display width of the avatar in pixels. Defaults to $size.
+ * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false.
+ * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
+ * judged in that order. Default is the value of the 'avatar_rating' option.
+ * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values.
+ * Default null.
+ * @type array|string $class Array or string of additional classes to add to the <img> element.
+ * Default null.
+ * @type bool $force_display Whether to always show the avatar - ignores the show_avatars option.
+ * Default false.
+ * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
+ * }
+ * @return false|string `<img>` tag for the user's avatar. False on failure.
+ */
+function get_avatar( $id_or_email, $size = 96, $default = '', $alt = '', $args = null ) {
+ $defaults = array(
+ // get_avatar_data() args.
+ 'size' => 96,
+ 'height' => null,
+ 'width' => null,
+ 'default' => get_option( 'avatar_default', 'mystery' ),
+ 'force_default' => false,
+ 'rating' => get_option( 'avatar_rating' ),
+ 'scheme' => null,
+ 'alt' => '',
+ 'class' => null,
+ 'force_display' => false,
+ 'extra_attr' => '',
+ );
+
+ if ( empty( $args ) ) {
+ $args = array();
+ }
+
+ $args['size'] = (int) $size;
+ $args['default'] = $default;
+ $args['alt'] = $alt;
+
+ $args = wp_parse_args( $args, $defaults );
+
+ if ( empty( $args['height'] ) ) {
+ $args['height'] = $args['size'];
+ }
+ if ( empty( $args['width'] ) ) {
+ $args['width'] = $args['size'];
+ }
+
+ if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) {
+ $id_or_email = get_comment( $id_or_email );
+ }
+
+ /**
+ * Filter whether to retrieve the avatar URL early.
+ *
+ * Passing a non-null value will effectively short-circuit get_avatar(), passing
+ * the value through the {@see 'pre_get_avatar'} filter and returning early.
+ *
+ * @since 4.2.0
+ *
+ * @param string $avatar HTML for the user's avatar. Default null.
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param array $args Arguments passed to get_avatar_url(), after processing.
+ */
+ $avatar = apply_filters( 'pre_get_avatar', null, $id_or_email, $args );
+
+ if ( ! is_null( $avatar ) ) {
+ /** This filter is documented in wp-includes/pluggable.php */
+ return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args );
+ }
+
+ if ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) {
+ return false;
+ }
+
+ $url2x = get_avatar_url( $id_or_email, array_merge( $args, array( 'size' => $args['size'] * 2 ) ) );
+
+ $args = get_avatar_data( $id_or_email, $args );
+
+ $url = $args['url'];
+
+ if ( ! $url || is_wp_error( $url ) ) {
+ return false;
+ }
+
+ $class = array( 'avatar', 'avatar-' . (int) $args['size'], 'photo' );
+
+ if ( ! $args['found_avatar'] || $args['force_default'] ) {
+ $class[] = 'avatar-default';
+ }
+
+ if ( $args['class'] ) {
+ if ( is_array( $args['class'] ) ) {
+ $class = array_merge( $class, $args['class'] );
+ } else {
+ $class[] = $args['class'];
+ }
+ }
+
+ $avatar = sprintf(
+ "<img alt='%s' src='%s' srcset='%s' class='%s' height='%d' width='%d' %s/>",
+ esc_attr( $args['alt'] ),
+ esc_url( $url ),
+ esc_attr( "$url2x 2x" ),
+ esc_attr( join( ' ', $class ) ),
+ (int) $args['height'],
+ (int) $args['width'],
+ $args['extra_attr']
+ );
+
+ /**
+ * Filter the avatar to retrieve.
+ *
+ * @since 2.5.0
+ * @since 4.2.0 The `$args` parameter was added.
+ *
+ * @param string $avatar <img> tag for the user's avatar.
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param int $size Square avatar width and height in pixels to retrieve.
+ * @param string $alt Alternative text to use in the avatar image tag.
+ * Default empty.
+ * @param array $args Arguments passed to get_avatar_data(), after processing.
+ */
+ return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args );
+}
+endif;
+
+if ( !function_exists( 'wp_text_diff' ) ) :
+/**
+ * Displays a human readable HTML representation of the difference between two strings.
+ *
+ * The Diff is available for getting the changes between versions. The output is
+ * HTML, so the primary use is for displaying the changes. If the two strings
+ * are equivalent, then an empty string will be returned.
+ *
+ * The arguments supported and can be changed are listed below.
+ *
+ * 'title' : Default is an empty string. Titles the diff in a manner compatible
+ * with the output.
+ * 'title_left' : Default is an empty string. Change the HTML to the left of the
+ * title.
+ * 'title_right' : Default is an empty string. Change the HTML to the right of
+ * the title.
+ *
+ * @since 2.6.0
+ *
+ * @see wp_parse_args() Used to change defaults to user defined settings.
+ * @uses Text_Diff
+ * @uses WP_Text_Diff_Renderer_Table
+ *
+ * @param string $left_string "old" (left) version of string
+ * @param string $right_string "new" (right) version of string
+ * @param string|array $args Optional. Change 'title', 'title_left', and 'title_right' defaults.
+ * @return string Empty string if strings are equivalent or HTML with differences.
+ */
+function wp_text_diff( $left_string, $right_string, $args = null ) {
+ $defaults = array( 'title' => '', 'title_left' => '', 'title_right' => '' );
+ $args = wp_parse_args( $args, $defaults );
+
+ if ( ! class_exists( 'WP_Text_Diff_Renderer_Table', false ) )
+ require( ABSPATH . WPINC . '/wp-diff.php' );
+
+ $left_string = normalize_whitespace($left_string);
+ $right_string = normalize_whitespace($right_string);
+
+ $left_lines = explode("\n", $left_string);
+ $right_lines = explode("\n", $right_string);
+ $text_diff = new Text_Diff($left_lines, $right_lines);
+ $renderer = new WP_Text_Diff_Renderer_Table( $args );
+ $diff = $renderer->render($text_diff);
+
+ if ( !$diff )
+ return '';
+
+ $r = "<table class='diff'>\n";
+
+ if ( ! empty( $args[ 'show_split_view' ] ) ) {
+ $r .= "<col class='content diffsplit left' /><col class='content diffsplit middle' /><col class='content diffsplit right' />";