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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 |
|---|---|
| 322 | * Filters the output created by a shortcode callback. |
| 323 | * |
| 324 | * @since 4.7.0 |
| 325 | * |
| 326 | * @param string $output Shortcode output. |
| 327 | * @param string $tag Shortcode name. |
| 328 | * @param array|string $attr Shortcode attributes array or empty string. |
| 329 | * @param array $m Regular expression match array. |
| 330 | */ |
| 331 | return apply_filters( 'do_shortcode_tag', $output, $tag, $attr, $m ); |
| 332 | } |
| 333 | |
| 334 | /** |
| 335 | * Search only inside HTML elements for shortcodes and process them. |
| 336 | * |
| 337 | * Any [ or ] characters remaining inside elements will be HTML encoded |
| 338 | * to prevent interference with shortcodes that are outside the elements. |
| 339 | * Assumes $content processed by KSES already. Users with unfiltered_html |
| 340 | * capability may get unexpected output if angle braces are nested in tags. |