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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 |
|---|---|
| 271 | * Filters the default avatars. |
| 272 | * |
| 273 | * Avatars are stored in key/value pairs, where the key is option value, |
| 274 | * and the name is the displayed avatar name. |
| 275 | * |
| 276 | * @since 2.6.0 |
| 277 | * |
| 278 | * @param string[] $avatar_defaults Associative array of default avatars. |
| 279 | */ |
| 280 | $avatar_defaults = apply_filters( 'avatar_defaults', $avatar_defaults ); |
| 281 | $default = get_option( 'avatar_default', 'mystery' ); |
| 282 | $avatar_list = ''; |
| 283 | |
| 284 | // Force avatars on to display these choices |
| 285 | add_filter( 'pre_option_show_avatars', '__return_true', 100 ); |
| 286 | |
| 287 | foreach ( $avatar_defaults as $default_key => $default_name ) { |
| 288 | $selected = ( $default == $default_key ) ? 'checked="checked" ' : ''; |
| 289 | $avatar_list .= "\n\t<label><input type='radio' name='avatar_default' id='avatar_{$default_key}' value='" . esc_attr( $default_key ) . "' {$selected}/> "; |