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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 |
|---|---|
| 2101 | $wp_scripts->do_head_items(); |
| 2102 | |
| 2103 | /** |
| 2104 | * Filters whether to print the head scripts. |
| 2105 | * |
| 2106 | * @since 2.8.0 |
| 2107 | * |
| 2108 | * @param bool $print Whether to print the head scripts. Default true. |
| 2109 | */ |
| 2110 | if ( apply_filters( 'print_head_scripts', true ) ) { |
| 2111 | _print_scripts(); |
| 2112 | } |
| 2113 | |
| 2114 | $wp_scripts->reset(); |
| 2115 | return $wp_scripts->done; |
| 2116 | } |
| 2117 | |
| 2118 | /** |
| 2119 | * Prints the scripts that were queued for the footer or too late for the HTML head. |