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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 |
|---|---|
| 3971 | |
| 3972 | /* |
| 3973 | * Temporarily unhook wp_filter_content_tags() since any tags |
| 3974 | * within the excerpt are stripped out. Modifying the tags here |
| 3975 | * is wasteful and can lead to bugs in the image counting logic. |
| 3976 | */ |
| 3977 | $filter_removed = remove_filter( 'the_content', 'wp_filter_content_tags' ); |
| 3978 | |
| 3979 | /** This filter is documented in wp-includes/post-template.php */ |
| 3980 | $text = apply_filters( 'the_content', $text ); |
| 3981 | $text = str_replace( ']]>', ']]>', $text ); |
| 3982 | |
| 3983 | /** |
| 3984 | * Only restore the filter callback if it was removed above. The logic |
| 3985 | * to unhook and restore only applies on the default priority of 10, |
| 3986 | * which is generally used for the filter callback in WordPress core. |
| 3987 | */ |
| 3988 | if ( $filter_removed ) { |
| 3989 | add_filter( 'the_content', 'wp_filter_content_tags' ); |