php实现连接access数据库并转txt写入的方法

<?php
//php连接access测试
define('TABLE', 'shoujiguishudi');
define('OUTPUTFILE', 'output.txt');
define('ROOT',str_replace($_SERVER['PHP_SELF'],'',str_replace('\\','/',__FILE__)));
$conn = new com('adodb.connection');
$conn->Provider= 'microsoft.jet.oledb.4.0';
$conn->Open(ROOT.'\\callerloc.mdb');//文件地址
$rs = new com('adodb.recordset');
$rs->Open('SELECT * FROM '.TABLE, $conn, 1, 1);//查表
$i = 0;
$page=1;
if(!empty($_GET['page'])){
  $page=$_GET['page'];
  if($page<1)$page=1;
  if($page>$rs->PageCount)$page=$rs->PageCount;
}
$rs->AbsolutePage=$page;
//打开文件
$fp = fopen(OUTPUTFILE, "w");
echo '<table width="100%"><tr>';
foreach( $rs->Fields as $name){
  echo '<td>'.$name->Name.'</td>';
  fwrite($fp,$name->Name."\t");
}
fwrite($fp,"\r\n");
echo '</tr>';
for(;!$rs->EOF;$rs->MoveNext()){
  echo '<tr>';
  foreach( $rs->Fields as $name){
    //echo '<td>'.$name.'</td>';
    fwrite($fp,$name."\t");
  }
  $i++;
  fwrite($fp,"\r\n");
  if($i%1000==0)
    echo $i."<br>";
  echo '</tr>';
  if($rs->AbsolutePosition>=$rs->AbsolutePage*$rs->PageSize)
    break;
}
echo '</tale>';
fclose($fp);
?>