读取两文件，不同的内容存入另一个文件中

<?php/**  * 从两个.csv 文件中读出数据  * 比较这两个文件不同的数据，并存入.csv 文件中  */header("Content-type:text/html;charset=utf-8");class Readfiledata {/** * 链接数据库 */private static  function connect(){require_once 'index2.php';mysql_connect('localhost','root','');mysql_select_db('sinapay');}/** * 读文件并获取数据 */private static function getdata($file) {$handle = fopen ( $file, 'r' );$orderform = array ();$i=0;while ( false != ($data = fgetcsv ($handle,0,',')) ) {$i++;if($i==1) continue;$orderform [] =trim($data [0],"\t\n\r\0\x0B`\'");}fclose ( $handle );return $orderform;}/** * 获取两个文件不同的数据 * * @param String $file1         * @param String $file2         */private static function getdiffdata($file1, $file2) {$orderform = self::getdata ( $file1 );$orderform2 = self::getdata ( $file2 );$diff1 = array_diff ($orderform,$orderform2 );$diff2 = array_diff ($orderform2,$orderform );$todiff = array_merge ( $diff1, $diff2 );$todif=array_values(array_unique($todiff));return $todif;}/** * 数据写入.csv 文件中 * @param String $filename         * @param String $file1         * @param String $file2         */private static function writefile($filename, $file1, $file2) {$todiffdata = self::getdiffdata ( $file1, $file2 );$newarray=array();self::connect();if(empty($todiffdata)){echo "两个文件的数据一致";die;}$toparray=array("charge_id","bussined_id");$condition='';$counarray=count($todiffdata)-1;foreach($todiffdata as $key=>$val){  if($key==$counarray){  $condition.="charge_id=$val";  }else{        $condition.="charge_id=$val or ";  }}$sql="select charge_id,business_id from sinapay_charge_final where $condition";$result=mysql_query($sql);while($res=mysql_fetch_array($result)){$data=array('charge_id'=>$res['charge_id'],'business_id'=>$res['business_id']);$newarray[]=$data;}if (! is_file ( $filename)) {     touch ( $filename);}$handle = fopen ($filename, 'a' );fputcsv($handle, $toparray);foreach($newarray as $value){  fputcsv ( $handle, $value );}fclose ( $handle );}/** * 入口文件 */public static function main($filename,$file1,$file2) {self::writefile ( $filename, $file1, $file2 );}}$filename = 'total.csv';$file1 = 'ac.csv';$file2 = 'ad.csv';Readfiledata::main ($filename, $file1, $file2 );