php csv操作

csv的写入数据:

$data = array(
array('qq号','登录时间','名称'),
array('123456','2012-08-21 15:21:10'.chr(1),'我是来测试的'),
array('56788','2012-08-21 18:21:20 '.chr(1),'test测试数据'),
array('321789','2012-08-21 11:21:25 '.chr(1),'HELLO')
);
$filename = "./file/test.csv";
if( !file_exists( $filename ) ){
file_put_contents($filename, '');
}
$file = fopen($filename, 'w');
foreach ( $data as $val ){
if( false === fputcsv($file, $val) ){
die('写入数据失败');
}
}
fclose($file);

$data = array(
	array('qq号','登录时间','名称'),
	array('123456','2012-08-21 15:21:10'.chr(1),'我是来测试的'),
	array('56788','2012-08-21 18:21:20 '.chr(1),'test测试数据'),
	array('321789','2012-08-21 11:21:25 '.chr(1),'HELLO')
);
$filename = "./file/test.csv";
if( !file_exists( $filename ) ){
	file_put_contents($filename, '');
}
$file = fopen($filename, 'w');
foreach ( $data as $val ){
	if( false === fputcsv($file, $val) ){
		die('写入数据失败');
	}
}
fclose($file);

在写入到csv的时候我的日期格式出现了问题,只显示格式为:2011/06/05 12:02。导致我的秒数不存在了,所以在时间的后面都要加上chr(1)来得到正确的格式

csv读数据:

$file = fopen($filename, 'w') or die('打开文件失败');
//读数据
$file = fopen($filename, 'r');
while ( $val = fgetcsv($file) ){
print_r($val);
}
fclose($file);

$file = fopen($filename, 'w') or die('打开文件失败');
//读数据
$file =  fopen($filename, 'r');
while ( $val = fgetcsv($file) ){
	print_r($val);
}
fclose($file);

csv的下载:

$data = array(
array('qq号','登录时间','名称'),
array('123456','2012-08-21 15:21:10'.chr(1),'我是来测试的'),
array('56788','2012-08-21 18:21:20 '.chr(1),'test测试数据'),
array('321789','2012-08-21 11:21:25 '.chr(1),'HELLO')
);


//下载功能
$date = time();
header("Content-Type: text/csv");
header("Content-Disposition: attachment; filename=".$date.".csv");
header('Cache-Control:must-revalidate,post-check=0,pre-check=0');
header('Expires:0');
header('Pragma:public');
foreach ( $data as $val ){
echo implode(",", $val)."
";
}
----------------------------------------------------------------------------
<?php$filename = "./creattest.csv";  //读数据   $file =  fopen($filename, 'r'); $prex = "linpre";while ( $val = fgetcsv($file) ){      print_r($val);	echo "<hr/>";		$val_list[] = $val;}$val_list[0][0] = $prex.$val_list[0][0];$val_list[1][0] = $prex.$val_list[1][0];echo $val_list[0][0]."------------";$file = fopen($filename, 'w'); foreach ( $val_list as $list ){ if( false === fputcsv($file, $list) ){   die('写入数据失败'); }}fclose($file);