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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 |
|---|---|
| 653 | * @since 1.0.0 |
| 654 | * |
| 655 | * @param string $title The string to be sanitized. |
| 656 | * @param string $fallback_title Optional. A title to use if $title is empty. |
| 657 | * @return string The sanitized string. |
| 658 | */ |
| 659 | function sanitize_title($title, $fallback_title = '') { |
| 660 | $raw_title = $title; |
| 661 | $title = strip_tags($title); |
| 662 | $title = apply_filters('sanitize_title', $title, $raw_title); |
| 663 | |
| 664 | if ( '' === $title || false === $title ) |
| 665 | $title = $fallback_title; |
| 666 | |
| 667 | return $title; |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * Sanitizes title, replacing whitespace with dashes. |