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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 |
|---|---|
| 242 | array_pop( $wp_current_filter ); |
| 243 | } |
| 244 | return $args[0]; |
| 245 | } |
| 246 | |
| 247 | if ( ! isset( $wp_filter['all'] ) ) { |
| 248 | $wp_current_filter[] = $tag; |
| 249 | } |
| 250 | |
| 251 | $filtered = $wp_filter[ $tag ]->apply_filters( $args[0], $args ); |
| 252 | |
| 253 | array_pop( $wp_current_filter ); |
| 254 | |
| 255 | return $filtered; |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * Removes a function from a specified filter hook. |
| 260 | * |