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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 |
|---|---|
| 754 | * @since 1.0.0 |
| 755 | * |
| 756 | * @param string $title The string to be sanitized. |
| 757 | * @param string $fallback_title Optional. A title to use if $title is empty. |
| 758 | * @return string The sanitized string. |
| 759 | */ |
| 760 | function sanitize_title($title, $fallback_title = '') { |
| 761 | $raw_title = $title; |
| 762 | $title = strip_tags($title); |
| 763 | $title = apply_filters('sanitize_title', $title, $raw_title); |
| 764 | |
| 765 | if ( '' === $title || false === $title ) |
| 766 | $title = $fallback_title; |
| 767 | |
| 768 | return $title; |
| 769 | } |
| 770 | |
| 771 | /** |
| 772 | * Sanitizes title, replacing whitespace with dashes. |