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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2244 | * |
| 2245 | * @param string $avatar HTML for the user's avatar. Default null. |
| 2246 | * @param int|object|string $id_or_email A user ID, email address, or comment object. |
| 2247 | * @param array $args Arguments passed to get_avatar_url(), after processing. |
| 2248 | */ |
| 2249 | $avatar = apply_filters( 'pre_get_avatar', null, $id_or_email, $args ); |
| 2250 | |
| 2251 | if ( ! is_null( $avatar ) ) { |
| 2252 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2253 | return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args ); |
| 2254 | } |
| 2255 | |
| 2256 | if ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) { |
| 2257 | return false; |
| 2258 | } |
| 2259 | |
| 2260 | $url2x = get_avatar_url( $id_or_email, array_merge( $args, array( 'size' => $args['size'] * 2 ) ) ); |
| 2261 | |
| 2262 | $args = get_avatar_data( $id_or_email, $args ); |
| Line | Code |
| 2299 | * @since 4.2.0 The `$args` parameter was added. |
| 2300 | * |
| 2301 | * @param string $avatar <img> tag for the user's avatar. |
| 2302 | * @param int|object|string $id_or_email A user ID, email address, or comment object. |
| 2303 | * @param int $size Square avatar width and height in pixels to retrieve. |
| 2304 | * @param string $alt Alternative text to use in the avatar image tag. |
| 2305 | * Default empty. |
| 2306 | * @param array $args Arguments passed to get_avatar_data(), after processing. |
| 2307 | */ |
| 2308 | return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args ); |
| 2309 | } |
| 2310 | endif; |
| 2311 | |
| 2312 | if ( !function_exists( 'wp_text_diff' ) ) : |
| 2313 | /** |
| 2314 | * Displays a human readable HTML representation of the difference between two strings. |
| 2315 | * |
| 2316 | * The Diff is available for getting the changes between versions. The output is |
| 2317 | * HTML, so the primary use is for displaying the changes. If the two strings |