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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 |
|---|---|
| 2138 | $wp_scripts->do_head_items(); |
| 2139 | |
| 2140 | /** |
| 2141 | * Filters whether to print the head scripts. |
| 2142 | * |
| 2143 | * @since 2.8.0 |
| 2144 | * |
| 2145 | * @param bool $print Whether to print the head scripts. Default true. |
| 2146 | */ |
| 2147 | if ( apply_filters( 'print_head_scripts', true ) ) { |
| 2148 | _print_scripts(); |
| 2149 | } |
| 2150 | |
| 2151 | $wp_scripts->reset(); |
| 2152 | return $wp_scripts->done; |
| 2153 | } |
| 2154 | |
| 2155 | /** |
| 2156 | * Prints the scripts that were queued for the footer or too late for the HTML head. |