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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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836 |
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837 | $output = ''; |
838 | $current_page = 0; |
839 |
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840 | // sanitize, mostly to keep spaces out |
841 | $r['exclude'] = preg_replace('/[^0-9,]/', '', $r['exclude']); |
842 |
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843 | // Allow plugins to filter an array of excluded pages (but don't put a nullstring into the array) |
844 | $exclude_array = ( $r['exclude'] ) ? explode(',', $r['exclude']) : array(); |
845 | $r['exclude'] = implode( ',', apply_filters('wp_list_pages_excludes', $exclude_array) ); |
846 |
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847 | // Query pages. |
848 | $r['hierarchical'] = 0; |
849 | $pages = get_pages($r); |
850 |
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851 | if ( !empty($pages) ) { |
852 | if ( $r['title_li'] ) |
853 | $output .= '<li class="pagenav">' . $r['title_li'] . '<ul>'; |
854 |
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