/** 
 * 新闻内容提取第一张图片 
 * @access public 
 * @param string $id 文档id 
 * @param string $addField 字段名 
 * @return string 
 */ 
if(!function_exists('getBodyonepic')) { 
    function getBodyonepic($id, $addField='body') { 
        global $dsql; 
        $row = $dsql->GetOne("SELECT a.litpic,c.addtable FROM dede_archives AS a LEFT JOIN dede_channeltype AS c ON a.channel=c.id where a.id='$id'"); 
        $addtable = trim($row['addtable']); 
        if($row['litpic'] == '-' || $row['litpic'] == '') { 
            $litpic = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif'; 
        } 
        $row = $dsql->GetOne("SELECT $addField FROM `$addtable` WHERE aid=$id"); 
        $body = $row["$addField"]; 
        preg_match_all("/]*)\\s*src=('|\"([^'\"]+)('|\"))/", $body, $matches); 
        $imgsrc_arr = array_unique($matches[3]); 
        $result = $imgsrc_arr[0] ? $imgsrc_arr[0] : $litpic; 
        return $result; 
    } 
}
    

/** 
 * 新闻内容提取图片(多张)自定义输出 
 * @access public 
 * @param string $string 文档内容 
 * @param string $num 输出几张 
 * @return string 
 */ 
if(!function_exists('getBodypics')) { 
    function getBodypics($string, $num) { 
        preg_match_all("/]*)\\s*src=('|\"([^'\"]+)('|\"))/", $string, $matches); 
        $imgsrc_arr = array_unique($matches[3]); 
        $count = count($imgsrc_arr); 
        $i = 0; 
        foreach($imgsrc_arr as $imgsrc) { 
            if($i == $num) break; 
            $result .= ""; 
            $i++; 
        } 
        return $result; 
    } 
}