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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 |
---|---|
215 | * |
216 | * @since Twenty Seventeen 2.2 |
217 | */ |
218 | function wp_body_open() { |
219 | /** |
220 | * Triggered after the opening <body> tag. |
221 | * |
222 | * @since Twenty Seventeen 2.2 |
223 | */ |
224 | do_action( 'wp_body_open' ); |
225 | } |
226 | endif; |
227 |
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