+
+ if ( empty($default) ) {
+ $avatar_default = get_option('avatar_default');
+ if ( empty($avatar_default) )
+ $default = 'mystery';
+ else
+ $default = $avatar_default;
+ }
+
+ if ( is_ssl() )
+ $host = 'https://secure.gravatar.com';
+ else
+ $host = 'http://www.gravatar.com';
+
+ if ( 'mystery' == $default )
+ $default = "$host/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}"; // ad516503a11cd5ca435acc9bb6523536 == md5('unknown@gravatar.com')
+ elseif ( 'blank' == $default )
+ $default = includes_url('images/blank.gif');
+ elseif ( !empty($email) && 'gravatar_default' == $default )
+ $default = '';
+ elseif ( 'gravatar_default' == $default )
+ $default = "$host/avatar/s={$size}";
+ elseif ( empty($email) )
+ $default = "$host/avatar/?d=$default&s={$size}";
+ elseif ( strpos($default, 'http://') === 0 )
+ $default = add_query_arg( 's', $size, $default );
+
+ if ( !empty($email) ) {
+ $out = "$host/avatar/";
+ $out .= md5( strtolower( $email ) );
+ $out .= '?s='.$size;
+ $out .= '&d=' . urlencode( $default );
+
+ $rating = get_option('avatar_rating');
+ if ( !empty( $rating ) )
+ $out .= "&r={$rating}";
+
+ $avatar = "<img alt='{$safe_alt}' src='{$out}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
+ } else {
+ $avatar = "<img alt='{$safe_alt}' src='{$default}' class='avatar avatar-{$size} photo avatar-default' height='{$size}' width='{$size}' />";
+ }
+
+ return apply_filters('get_avatar', $avatar, $id_or_email, $size, $default, $alt);
+}
+endif;
+
+if ( !function_exists('wp_setcookie') ) :
+/**
+ * Sets a cookie for a user who just logged in.
+ *
+ * @since 1.5
+ * @deprecated Use wp_set_auth_cookie()
+ * @see wp_set_auth_cookie()
+ *
+ * @param string $username The user's username
+ * @param string $password Optional. The user's password
+ * @param bool $already_md5 Optional. Whether the password has already been through MD5
+ * @param string $home Optional. Will be used instead of COOKIEPATH if set
+ * @param string $siteurl Optional. Will be used instead of SITECOOKIEPATH if set
+ * @param bool $remember Optional. Remember that the user is logged in
+ */
+function wp_setcookie($username, $password = '', $already_md5 = false, $home = '', $siteurl = '', $remember = false) {
+ _deprecated_function( __FUNCTION__, '2.5', 'wp_set_auth_cookie()' );
+ $user = get_userdatabylogin($username);
+ wp_set_auth_cookie($user->ID, $remember);
+}
+endif;
+
+if ( !function_exists('wp_clearcookie') ) :
+/**
+ * Clears the authentication cookie, logging the user out.
+ *
+ * @since 1.5
+ * @deprecated Use wp_clear_auth_cookie()
+ * @see wp_clear_auth_cookie()
+ */
+function wp_clearcookie() {
+ _deprecated_function( __FUNCTION__, '2.5', 'wp_clear_auth_cookie()' );
+ wp_clear_auth_cookie();
+}
+endif;
+
+if ( !function_exists('wp_get_cookie_login') ):
+/**
+ * Gets the user cookie login.
+ *
+ * This function is deprecated and should no longer be extended as it won't be
+ * used anywhere in WordPress. Also, plugins shouldn't use it either.
+ *
+ * @since 2.0.3
+ * @deprecated No alternative
+ *
+ * @return bool Always returns false
+ */
+function wp_get_cookie_login() {
+ _deprecated_function( __FUNCTION__, '2.5', '' );
+ return false;
+}
+endif;
+
+if ( !function_exists('wp_login') ) :
+/**
+ * Checks a users login information and logs them in if it checks out.
+ *
+ * Use the global $error to get the reason why the login failed. If the username
+ * is blank, no error will be set, so assume blank username on that case.
+ *
+ * Plugins extending this function should also provide the global $error and set
+ * what the error is, so that those checking the global for why there was a
+ * failure can utilize it later.
+ *
+ * @since 1.2.2
+ * @deprecated Use wp_signon()
+ * @global string $error Error when false is returned
+ *
+ * @param string $username User's username
+ * @param string $password User's password
+ * @param bool $deprecated Not used
+ * @return bool False on login failure, true on successful check
+ */
+function wp_login($username, $password, $deprecated = '') {
+ global $error;
+
+ $user = wp_authenticate($username, $password);
+
+ if ( ! is_wp_error($user) )
+ return true;
+
+ $error = $user->get_error_message();
+ return false;
+}
+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
+ * @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' ) )
+ require( ABSPATH . WPINC . '/wp-diff.php' );
+
+ $left_string = normalize_whitespace($left_string);
+ $right_string = normalize_whitespace($right_string);
+
+ $left_lines = split("\n", $left_string);
+ $right_lines = split("\n", $right_string);
+
+ $text_diff = new Text_Diff($left_lines, $right_lines);
+ $renderer = new WP_Text_Diff_Renderer_Table();
+ $diff = $renderer->render($text_diff);
+
+ if ( !$diff )
+ return '';
+
+ $r = "<table class='diff'>\n";
+ $r .= "<col class='ltype' /><col class='content' /><col class='ltype' /><col class='content' />";
+
+ if ( $args['title'] || $args['title_left'] || $args['title_right'] )
+ $r .= "<thead>";
+ if ( $args['title'] )
+ $r .= "<tr class='diff-title'><th colspan='4'>$args[title]</th></tr>\n";
+ if ( $args['title_left'] || $args['title_right'] ) {
+ $r .= "<tr class='diff-sub-title'>\n";
+ $r .= "\t<td></td><th>$args[title_left]</th>\n";
+ $r .= "\t<td></td><th>$args[title_right]</th>\n";
+ $r .= "</tr>\n";
+ }
+ if ( $args['title'] || $args['title_left'] || $args['title_right'] )
+ $r .= "</thead>\n";
+
+ $r .= "<tbody>\n$diff\n</tbody>\n";
+ $r .= "</table>";
+
+ return $r;