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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.
| Line | Code |
|---|---|
| 3137 | * the value through the {@see 'get_avatar'} filter and returning early. |
| 3138 | * |
| 3139 | * @since 4.2.0 |
| 3140 | * |
| 3141 | * @param string|null $avatar HTML for the user's avatar. Default null. |
| 3142 | * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash, |
| 3143 | * user email, WP_User object, WP_Post object, or WP_Comment object. |
| 3144 | * @param array $args Arguments passed to get_avatar_url(), after processing. |
| 3145 | */ |
| 3146 | $avatar = apply_filters( 'pre_get_avatar', null, $id_or_email, $args ); |
| 3147 | |
| 3148 | if ( ! is_null( $avatar ) ) { |
| 3149 | /** This filter is documented in wp-includes/pluggable.php */ |
| 3150 | return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args ); |
| 3151 | } |
| 3152 | |
| 3153 | if ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) { |
| 3154 | return false; |
| 3155 | } |