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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 |
---|---|
3165 | } |
3166 |
|
3167 | if ( ! isset( $_wp_theme_features[ $feature ] ) ) { |
3168 | return false; |
3169 | } |
3170 |
|
3171 | // If no args passed then no extra checks need to be performed. |
3172 | if ( ! $args ) { |
3173 | /** This filter is documented in wp-includes/theme.php */ |
3174 | return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
3175 | } |
3176 |
|
3177 | switch ( $feature ) { |
3178 | case 'post-thumbnails': |
3179 | /* |
3180 | * post-thumbnails can be registered for only certain content/post types |
3181 | * by passing an array of types to add_theme_support(). |
3182 | * If no array was passed, then any type is accepted. |
3183 | */ |
Line | Code |
3211 | * The dynamic portion of the hook name, `$feature`, refers to the specific |
3212 | * theme feature. See add_theme_support() for the list of possible values. |
3213 | * |
3214 | * @since 3.4.0 |
3215 | * |
3216 | * @param bool $supports Whether the active theme supports the given feature. Default true. |
3217 | * @param array $args Array of arguments for the feature. |
3218 | * @param string $feature The theme feature. |
3219 | */ |
3220 | return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[ $feature ] ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
3221 | } |
3222 |
|
3223 | /** |
3224 | * Checks a theme's support for a given feature before loading the functions which implement it. |
3225 | * |
3226 | * @since 2.9.0 |
3227 | * |
3228 | * @param string $feature The feature being checked. See add_theme_support() for the list |
3229 | * of possible values. |