WordPress开发手册:get_avatar()

函数原型

get_avatar( mixed $id_or_email, int $size = 96, string $default = ”, string $alt = ”, array $args = null ): string|false

函数描述

是否弃用

未弃用

函数参数

$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.

$size
int
Optional

Height and width of the avatar image file in pixels.

Default: 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: ''

$alt
string
Optional

Alternative text to use in img tag.

Default: ''

$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.
• loading string
  Value for the loading attribute.
• extra_attr string
  HTML attributes to insert in the IMG element. Is not sanitized. Default empty.

Default: null

函数返回值

函数位置

函数源码

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,
		'loading'       => null,
		'extra_attr'    => '',
		'decoding'      => 'async',
	);

	if ( wp_lazy_loading_enabled( 'img', 'get_avatar' ) ) {
		$defaults['loading'] = wp_get_loading_attr_default( 'get_avatar' );
	}

	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 );
	}

	/**
	 * Allows the HTML for a user's avatar to be returned early.
	 *
	 * Returning 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|null $avatar      HTML for the user's avatar. Default null.
	 * @param mixed       $id_or_email The avatar 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'];
		}
	}

	// Add `loading` attribute.
	$extra_attr = $args['extra_attr'];
	$loading    = $args['loading'];

	if ( in_array( $loading, array( 'lazy', 'eager' ), true ) && ! preg_match( '/\bloading\s*=/', $extra_attr ) ) {
		if ( ! empty( $extra_attr ) ) {
			$extra_attr .= ' ';
		}

		$extra_attr .= "loading='{$loading}'";
	}

	if ( in_array( $args['decoding'], array( 'async', 'sync', 'auto' ) ) && ! preg_match( '/\bdecoding\s*=/', $extra_attr ) ) {
		if ( ! empty( $extra_attr ) ) {
			$extra_attr .= ' ';
		}
		$extra_attr .= "decoding='{$args['decoding']}'";
	}

	$avatar = sprintf(
		"<img alt='%s' src='%s' srcset='%s' class='%s' height='%d' width='%d' %s/>",
		esc_attr( $args['alt'] ),
		esc_url( $url ),
		esc_url( $url2x ) . ' 2x',
		esc_attr( implode( ' ', $class ) ),
		(int) $args['height'],
		(int) $args['width'],
		$extra_attr
	);

	/**
	 * Filters the HTML for a user's avatar.
	 *
	 * @since 2.5.0
	 * @since 4.2.0 The `$args` parameter was added.
	 *
	 * @param string $avatar      HTML for the user's avatar.
	 * @param mixed  $id_or_email The avatar 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', 'mm', 'mysteryman', 'blank', or 'gravatar_default'.
	 * @param string $alt         Alternative text to use in the avatar image tag.
	 * @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 );
}

源码链接

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