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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 |
|---|---|
| 558 | /** |
| 559 | * Filter content to be run through kses. |
| 560 | * |
| 561 | * @since 2.3.0 |
| 562 | * |
| 563 | * @param string $string Content to run through kses. |
| 564 | * @param array $allowed_html Allowed HTML elements. |
| 565 | * @param array $allowed_protocols Allowed protocol in links. |
| 566 | */ |
| 567 | $string = apply_filters( 'pre_kses', $string, $allowed_html, $allowed_protocols ); |
| 568 | return $string; |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * This function returns kses' version number. |
| 573 | * |
| 574 | * @since 1.0.0 |
| 575 | * |
| 576 | * @return string KSES Version Number |