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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 |
|---|---|
| 197 | $r = parent::all_deps( $handles, $recursion ); |
| 198 | if ( ! $recursion ) { |
| 199 | /** |
| 200 | * Filter the list of script dependencies left to print. |
| 201 | * |
| 202 | * @since 2.3.0 |
| 203 | * |
| 204 | * @param array $to_do An array of script dependencies. |
| 205 | */ |
| 206 | $this->to_do = apply_filters( 'print_scripts_array', $this->to_do ); |
| 207 | } |
| 208 | return $r; |
| 209 | } |
| 210 | |
| 211 | function do_head_items() { |
| 212 | $this->do_items(false, 0); |
| 213 | return $this->done; |
| 214 | } |
| 215 | |