修正聚焦功能数组调用不规范，兼容一些其他的环境。

Akina/index.php

@@ -147,22 +147,28 @@ if($this->options->sticky){
 		<h1 class="fes-title">聚焦</h1>
 			<div class="feature-content">
 			<?php
-				$featureCid = explode(',', strtr($this->options->featureCids, ' ', ','));
-				for($i=0;$i<3;$i++){
+			    // 默认数据
+				$defaultUrl = ['https://zhebk.cn/Web/Akina.html','https://zhebk.cn/Web/userAkina.html','https://zhebk.cn/archives.html'];
+				$defaultTitle = ['Akina','使用说明','文章归档'];
+			    // 整理
+				$featureCid = array_filter(explode(',', strtr($this->options->featureCids, ' ', ',')));
+				// 循环输出
+				for($i=0;$i<count($featureCid);$i++){
+				    $featureNum = $i + 1;
 					$this->widget('Widget_Archive@lunbo'.$i, 'pageSize=1&type=single', 'cid='.$featureCid[$i])->to($ji);
-					$featureNum = $i + 1;
-					if($ji->permalink != ""){
-						if ($ji->fields->thumbnail){
-							$featureImg = $ji->fields->thumbnail;
-						} else {
-							$featureImg = theurl.'images/postbg/'.$featureNum.'.jpg';
-						}
-						echo '<li class="feature-'.$featureNum.'"><a href="'.$ji->permalink.'"><div class="feature-title"><span class="foverlay">'.$ji->title.'</span></div><img src="'.$featureImg.'"></a></li>';
+                    if ($ji->fields->thumbnail){
+						$featureImg = $ji->fields->thumbnail;
 					} else {
-						$defaultUrl = ['https://zhebk.cn/Web/Akina.html','https://zhebk.cn/Web/userAkina.html','https://zhebk.cn/archives.html'];
-						$defaultTitle = ['Akina','使用说明','文章归档'];
-						echo '<li class="feature-'.$featureNum.'"><a href="'.$defaultUrl[$i].'"><div class="feature-title"><span class="foverlay">'.$defaultTitle[$i].'</span></div><img src="'.theurl.'/images/feature/feature'.$featureNum.'.jpg"></a></li>';
+						$featureImg = theurl.'images/postbg/'.$featureNum.'.jpg';
 					}
+					echo '<li class="feature-'.$featureNum.'"><a href="'.$ji->permalink.'"><div class="feature-title"><span class="foverlay">'.$ji->title.'</span></div><img src="'.$featureImg.'"></a></li>';
+					if( $featureNum == 3 ) {
+					    break;
+					}
+				}
+				for($i = count($featureCid); $i < 3; $i++) {
+				    $addNum = $i + 1;
+					echo '<li class="feature-'.$addNum.'"><a href="'.$defaultUrl[$i].'"><div class="feature-title"><span class="foverlay">'.$defaultTitle[$i].'</span></div><img src="'.theurl.'/images/feature/feature'.$addNum.'.jpg"></a></li>';
 				}
 			?>
 			</div>