我正在尝试将mysql查询导出到csv。我让它工作，唯一的是它没有把空地放在那里。我用管子把它们隔开。我需要能够下载查询并将其上传到其他地方，所以我需要它来导出空字段。这是我当前的导出代码：
<?php
$from = $_REQUEST['from'];
$to = $_REQUEST['to'];
$filename = "APGE_ELEC_" . $to;
header('Content-Disposition: attachment; filename="'.$filename.'".csv"');
$hostname = ""; //SET SERVER/HOSTNAME
$dbusername = ""; //SET DATABASE USERNAME
$dbname = ""; //SET DATABASE NAME
$dbpassword = ""; //SET DATABASE USERNAME
$dbhandle = mysql_connect($hostname, $dbusername, $dbpassword)
or die("Unable to connect to MySQL");
$selected = mysql_select_db($dbname,$dbhandle)
or die("Could not select Data Base");
$query = "SELECT * FROM v88374 WHERE date >= DATE_FORMAT('" . $from . "', '%Y%m%d') AND date <= DATE_FORMAT('" . $to . "', '%Y%m%d')";
$export = mysql_query ($query ) or die ( "Sql error : " . mysql_error( ) );
$fields = mysql_num_fields ( $export );
for ( $i = 0; $i < $fields; $i++ )
{
$header .= mysql_field_name( $export , $i ) ."|" . "'t";
}
while( $row = mysql_fetch_row( $export ) )
{
$line = '';
foreach( $row as $value )
{
if ( ( !isset( $value ) ) || ( $value == "" ) )
{
$value = "'t";
}
else
{
$value = str_replace( '"' , '""' , $value );
$value = $value . '|' . "'t";
}
$line .= $value;
}
$data .= trim( $line ) . "'n";
}
$data = str_replace( "'r" , "" , $data );
if ( $data == "" )
{
$data = "'n(0) Records Found!'n";
}
print "$header'n$data";
exit();
?>
我希望这不是一个大问题。我感谢你的帮助。非常感谢。
为什么不简单地进行
SELECT whatever
FROM your_table
INTO OUTFILE '/directory/file.csv'
FIELDS TERMINATED BY '|'
ENCLOSED BY '"'
LINES TERMINATED BY ''n'
从手册来看：
如果MySQL客户端软件安装在远程计算机上，则可以使用客户端命令（如MySQL-e"SELECT…">file_name）在客户端主机上生成文件
要使用fputcsv，请尝试以下操作：
$fp = fopen('your_file_name.csv','w');
fputcsv($fp,$fields,'|'); // add in your header row
while( $row = mysql_fetch_row( $export ) )
{
if($row != NULL)
fputcsv($fp,$row,'|'); // Each row is already an array, so you just need to export it here
}
fclose($fp);
我认为错误在这里：
if ( ( !isset( $value ) ) || ( $value == "" ) )
{
$value = "'t";
}
else
{
$value = str_replace( '"' , '""' , $value );
$value = $value . '|' . "'t";
}
$line .= $value;
当$value为空时，您将其设为一个选项卡并添加它而不使用管道，else语句中的内容将不会执行。
此外，您的查询还有一个主要的安全问题，所以除非它仅用于个人用途和查询的一些卫生设施。
$from = mysql_real_escape_string($_REQUEST['from']);
$to = mysql_real_escape_string($_REQUEST['to']);