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wordpress函数get_avatar()用法示例

get_avatar( mixed $id_or_email,  int $size = 96,  string $default = '',  string $alt = '',  array $args = null )

Retrieve the avatar <img> tag for a user, email address, MD5 hash, comment, or post.


描述


参数

$id_or_email

(mixed)
(Required)
The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, user email, WP_User object, WP_Post object, or WP_Comment object.

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$size

(int)
(Optional)
Height and width of the avatar image file in pixels.

Default value: 96

$default

(string)
(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’.

Default value: ”

$alt

(string)
(Optional)
Alternative text to use in <img> tag.

Default value: ”

$args

(array)
(Optional)
Extra arguments to retrieve the avatar.

  • ‘height’
    (int) Display height of the avatar in pixels. Defaults to $size.
  • ‘width’
    (int) Display width of the avatar in pixels. Defaults to $size.
  • ‘force_default’
    (bool) Whether to always show the default image, never the Gravatar. Default false.
  • ‘rating’
    (string) 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.
  • ‘scheme’
    (string) URL scheme to use. See set_url_scheme() for accepted values.
  • ‘class’
    (array|string) Array or string of additional classes to add to the <img> element.
  • ‘force_display’
    (bool) Whether to always show the avatar – ignores the show_avatars option. Default false.
  • ‘extra_attr’
    (string) HTML attributes to insert in the IMG element. Is not sanitized. Default empty.

Default value: null


返回值

(false|string) <img> tag for the user’s avatar. False on failure.


源代码

File: wp-includes/pluggable.php

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 );
	}

	/**
	 * Filters whether to retrieve the avatar URL early.
	 *
	 * Passing a non-null value will effectively short-circuit get_avatar(), passing
	 * the value through the {@see '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']
	);

	/**
	 * Filters the avatar to retrieve.
	 *
	 * @since 2.5.0
	 * @since 4.2.0 The `$args` parameter was added.
	 *
	 * @param string $avatar      &lt;img&gt; 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 $default     URL for the default image or a default type. Accepts '404', 'retro', 'monsterid',
	 *                            'wavatar', 'indenticon','mystery' (or 'mm', or 'mysteryman'), 'blank', or 'gravatar_default'.
	 *                            Default is the value of the 'avatar_default' option, with a fallback of 'mystery'.
	 * @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 );
}

更新日志

Version 描述
4.2.0 Optional $args parameter added.
2.5.0 Introduced.

相关函数

Uses

  • wp-includes/link-template.php:
    get_avatar_url()
  • wp-includes/link-template.php:
    get_avatar_data()
  • wp-includes/pluggable.php:
    pre_get_avatar
  • wp-includes/formatting.php:
    esc_attr()
  • wp-includes/formatting.php:
    esc_url()
  • wp-includes/pluggable.php:
    get_avatar
  • wp-includes/functions.php:
    wp_parse_args()
  • wp-includes/plugin.php:
    apply_filters()
  • wp-includes/option.php:
    get_option()
  • wp-includes/comment.php:
    get_comment()
  • wp-includes/load.php:
    is_wp_error()
  • Show 6 more uses


Used By

  • wp-admin/includes/class-wp-comments-list-table.php:
    WP_Comments_List_Table::floated_admin_avatar()
  • wp-admin/includes/class-wp-posts-list-table.php:
    WP_Posts_List_Table::column_title()
  • wp-admin/includes/class-wp-ms-users-list-table.php:
    WP_MS_Users_List_Table::column_username()
  • wp-admin/includes/misc.php:
    wp_check_locked_posts()
  • wp-admin/includes/misc.php:
    wp_refresh_post_lock()
  • wp-admin/includes/dashboard.php:
    _wp_dashboard_recent_comments_row()
  • wp-admin/includes/class-wp-users-list-table.php:
    WP_Users_List_Table::single_row()
  • wp-admin/includes/post.php:
    _admin_notice_post_locked()
  • wp-admin/includes/revision.php:
    wp_prepare_revisions_for_js()
  • wp-admin/includes/comment.php:
    floated_admin_avatar()
  • wp-includes/admin-bar.php:
    wp_admin_bar_my_account_item()
  • wp-includes/admin-bar.php:
    wp_admin_bar_my_account_menu()
  • wp-includes/post-template.php:
    wp_post_revision_title_expanded()
  • wp-includes/class-walker-comment.php:
    Walker_Comment::comment()
  • wp-includes/class-walker-comment.php:
    Walker_Comment::html5_comment()
  • Show 10 more used by
    Hide more used by


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    Contributed by Codex

    Example for a post’s author, in The Loop.

    
    <?php echo get_avatar( get_the_author_meta( 'ID' ), 32 ); ?>
    
  2. Example for comments.

    
    <?php echo get_avatar( $comment, 32 ); ?>
    

    Example for a random email address.

    
    <?php echo get_avatar( 'email@example.com', 32 ); ?>
    

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