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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 |
|---|---|
| 3033 | * |
| 3034 | * @since 1.2.0 |
| 3035 | */ |
| 3036 | function wp_head() { |
| 3037 | /** |
| 3038 | * Prints scripts or data in the head tag on the front end. |
| 3039 | * |
| 3040 | * @since 1.5.0 |
| 3041 | */ |
| 3042 | do_action( 'wp_head' ); |
| 3043 | } |
| 3044 | |
| 3045 | /** |
| 3046 | * Fire the wp_footer action. |
| 3047 | * |
| 3048 | * See {@see 'wp_footer'}. |
| 3049 | * |
| 3050 | * @since 1.5.1 |
| 3051 | */ |