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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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385 | $this->meta_query->parse_query_vars( $this->query_vars ); |
386 |
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387 | /** |
388 | * Fires before comments are retrieved. |
389 | * |
390 | * @since 3.1.0 |
391 | * |
392 | * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). |
393 | */ |
394 | do_action_ref_array( 'pre_get_comments', array( &$this ) ); |
395 |
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396 | // Reparse query vars, in case they were modified in a 'pre_get_comments' callback. |
397 | $this->meta_query->parse_query_vars( $this->query_vars ); |
398 | if ( ! empty( $this->meta_query->queries ) ) { |
399 | $this->meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this ); |
400 | } |
401 |
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402 | $comment_data = null; |
403 |
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