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gistfile1.php

function paging($query_arr){
  global $total_page_num;
	global $paged;
	$range = 5;
	$half = 0;
	$range_offset = 0;
	$page_offset = 0;
	$cnt = '<nav class="paging"><ul>';
		// prev
		if($paged != 1){
			$cnt .= '<li class="prev"><a href="'.get_pagenum_link($paged-1).'">&#171; 前へ</a></li>';
		}
		// $range の調整
		if($range > $total_page_num) $range = $total_page_num;
		// $half 半分の位置
		$half = round($range / 2);

		if($paged < $half){
			$page_offset = 0;
			if($paged != 1) $page_offset = $paged-1;
		}else{
			$page_offset = $half-1;
		}

		if($total_page_num+$half < $range+$paged){
			$range_offset = ($total_page_num+$half) - ($range+$paged);
		}

		for($i=$paged+$range_offset; $i<$range+$paged+$range_offset; $i++){
			if($paged == ($i-$page_offset)){
				$cnt .= '<li class="active"><span>'.($i-$page_offset).'</span></li>';
			}else{
				$cnt .= '<li class="num"><a href="'.get_pagenum_link($i-$page_offset).'">'.($i-$page_offset).'</a></li>';
			}
		}
		// next
		if($total_page_num != $paged){
			$cnt .= '<li class="next"><a href="'.get_pagenum_link($paged+1).'">次へ &#187;</a></li>';
		}
	$cnt .= '</ul></nav>';
	echo $cnt;
};