Emlog博客调用分类文章图文显示的方法

<?php //调用分类文章，图文显示
function sheli_tw($sort, $num){$db = MySql::getInstance();
$sql = "SELECT gid,title,date,content,sortid,views,comnum FROM ".DB_PREFIX."blog WHERE sortid=".$sort." AND hide='n' ORDER BY `date` DESC LIMIT 0,$num";
$go = $db->query($sql);while($row = $db->fetch_array($go)){
$img_url = TEMPLATE_URL.'images/sheli.jpg';//无图片时显示
if(pic_thumb($row['content'])){$img_url = pic_thumb($row['content']);//查找正文第一张图片
}elseif(picthumb($row['gid'])){$img_url = picthumb($row['gid']);//查找附件第一张图片
}else{$img_url;}?>
<li><p><a href="<?php echo Url::log($row['gid']);?>"><img src="<?php echo $img_url;?>" /></p><span><?php echo $row['title'];?></a></span></li>
<?php }}function picthumb($blogid) {$db = MySql::getInstance();$sql = "SELECT * FROM ".DB_PREFIX."attachment WHERE blogid=".$blogid." AND (`filepath` LIKE '%jpg' OR `filepath` LIKE '%gif' OR `filepath` LIKE '%png') ORDER BY `aid` ASC LIMIT 0,1";$imgs = $db->query($sql);while($row = $db->fetch_array($imgs)){$pict.= ''.BLOG_URL.substr($row['filepath'],3,strlen($row['filepath'])).'';}return $pict;}function pic_thumb($content){preg_match_all("/\<img.*?src\=\"(.*?)\"[^>]*>/i", $content, $img);$imgsrc = !empty($img[1]) ? $img[1][0] : '';if($imgsrc):return $imgsrc;endif;}?>

<?php //全局匹配正文中的图片并存入imgsrc中
function img_zw($content){preg_match_all("|<img[^>]+src=\"([^>\"]+)\"?[^>]*>|is", $content, $img);$imgsrc = !empty($img[1]) ? $img[1][0] : '';if($imgsrc):return $imgsrc;endif;}
//Custom: 获取附件第一张图片
function img_fj($logid){$db = MySql::getInstance();$sql = "SELECT * FROM ".DB_PREFIX."attachment WHERE blogid=".$logid." AND (`filepath` LIKE '%jpg' OR `filepath` LIKE '%gif' OR `filepath` LIKE '%png') ORDER BY `aid` ASC LIMIT 0,1";$imgs = $db->query($sql);$img_path = "";while($row = $db->fetch_array($imgs)){$img_path .= BLOG_URL.substr($row['filepath'],3,strlen($row['filepath']));}
return $img_path;}?>

<?php 
$db = MySql::getInstance();
$sql = "SELECT gid,title,date,content,sortid,views,comnum FROM ".DB_PREFIX."blog WHERE type='blog' and sortid='1' and hide='n' ORDER BY `date` DESC LIMIT 0,15";
$go = $db->query($sql);while($value = $db->fetch_array($go)){
$img_url='';if(img_zw($value['content'])){$img_url = img_zw($value['content']);}elseif(img_fj($value['gid'])){$img_url = img_fj($value['gid']);}else{$img_url;}
$gid=$value['gid'];
global $CACHE;$log_cache_tags = $CACHE->readCache('logtags');
if (!empty($log_cache_tags[$gid])){$tag = '标签：';foreach ($log_cache_tags[$gid] as $sl){$tag .= "<a href=\"".Url::tag($sl['tagurl'])."\">".$sl['tagname'].'</a> ';}}
?>
图片：<img src="<?php echo $img_url;?>" />
日期：<?php echo gmdate('Y-m-d',$value['date']);?>
标签：<?php echo $tag;?>
标题：<a href="<?php echo Url::log($value['gid']);?>" title="<?php echo $value['title'];?>"><?php echo $value['title'];?></a>
描述：<?php echo subString(strip_tags(str_replace(array("\n","&nbsp;"," "),"",$value['content'])),0,80);?>
<?php }?>