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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 |
|---|---|
| 3066 | * - `pre_post_pinged` |
| 3067 | * - `pre_post_guid` |
| 3068 | * - `pre_post_menu_order` |
| 3069 | * - `pre_post_comment_count` |
| 3070 | * |
| 3071 | * @since 2.3.0 |
| 3072 | * |
| 3073 | * @param mixed $value Value of the post field. |
| 3074 | */ |
| 3075 | $value = apply_filters( "pre_post_{$field}", $value ); |
| 3076 | |
| 3077 | /** |
| 3078 | * Filters the value of a specific post field before saving. |
| 3079 | * |
| 3080 | * Only applied to post fields with a name which is *not* prefixed with `post_`. |
| 3081 | * |
| 3082 | * The dynamic portion of the hook name, `$field`, refers to the post |
| 3083 | * field name. Possible filter names include: |
| 3084 | * |