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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 |
|---|---|
| 3163 | } |
| 3164 | |
| 3165 | if ( ! isset( $_wp_theme_features[ $feature ] ) ) { |
| 3166 | return false; |
| 3167 | } |
| 3168 | |
| 3169 | // If no args passed then no extra checks need to be performed. |
| 3170 | if ( ! $args ) { |
| 3171 | /** This filter is documented in wp-includes/theme.php */ |
| 3172 | return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 3173 | } |
| 3174 | |
| 3175 | switch ( $feature ) { |
| 3176 | case 'post-thumbnails': |
| 3177 | /* |
| 3178 | * post-thumbnails can be registered for only certain content/post types |
| 3179 | * by passing an array of types to add_theme_support(). |
| 3180 | * If no array was passed, then any type is accepted. |
| 3181 | */ |
| Line | Code |
| 3209 | * The dynamic portion of the hook name, `$feature`, refers to the specific |
| 3210 | * theme feature. See add_theme_support() for the list of possible values. |
| 3211 | * |
| 3212 | * @since 3.4.0 |
| 3213 | * |
| 3214 | * @param bool $supports Whether the active theme supports the given feature. Default true. |
| 3215 | * @param array $args Array of arguments for the feature. |
| 3216 | * @param string $feature The theme feature. |
| 3217 | */ |
| 3218 | return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 3219 | } |
| 3220 | |
| 3221 | /** |
| 3222 | * Checks a theme's support for a given feature before loading the functions which implement it. |
| 3223 | * |
| 3224 | * @since 2.9.0 |
| 3225 | * |
| 3226 | * @param string $feature The feature being checked. See add_theme_support() for the list |
| 3227 | * of possible values. |