读取两文件，不同的内容存入还有一个文件里

<?php
/**
  * 从两个.csv 文件里读出数据
  * 比較这两个文件不同的数据。并存入.csv 文件里
  */
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 文件里
	 * @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 );