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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 |
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237 |
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238 | /** |
239 | * Filter the wp_mail() arguments. |
240 | * |
241 | * @since 2.2.0 |
242 | * |
243 | * @param array $args A compacted array of wp_mail() arguments, including the "to" email, |
244 | * subject, message, headers, and attachments values. |
245 | */ |
246 | $atts = apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ); |
247 |
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248 | if ( isset( $atts['to'] ) ) { |
249 | $to = $atts['to']; |
250 | } |
251 |
|
252 | if ( isset( $atts['subject'] ) ) { |
253 | $subject = $atts['subject']; |
254 | } |
255 |
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