PHP下载生成的csv文件及问题总结
《PHP实例:PHP下载生成的csv文件及问题总结》要点: 最近做了一个项目需要把订单的信息显示出来,并且能够把相关信息放到一个.csv 文件中,下载到浏览器.虽然说csv是一种比拟简单的excel表格形式,生成只要按指定格式然后生成.csv文件就可以,但是在使用中也会遇到很多问题,下面给大家分享下PHP下载csv文件及问题总结 首先大家先看个例子,生成csv文件并下载 //要生成csv文件的数组 $csvArr=array(); $csvArr[]=array('用户编号1','上班日期1','签到时间1','签退时间1'); $csvArr[]=array('用户编号2','上班日期2','签到时间2','签退时间2') download_send_headers("data_export_" . date("Y-m-d") . ".csv"); $head=array('用户编号','上班日期','签到时间','签退时间'); echo array2csv($csvArr,$head); unset($csvArr); die(); function array2csv(array &$array,$head) { if (count($array) == 0) { return null; } ob_start(); $df = fopen("php://output",'w'); if(!$head){ $head=array_keys(reset($array)); } fputcsv($df,$head); foreach ($array as $row) { fputcsv($df,$row); } fclose($df); return ob_get_clean(); } function download_send_headers($filename) { // disable caching $now = gmdate("D,d M Y H:i:s"); header("Expires: Tue,03 Jul 2001 06:00:00 GMT"); header("Cache-Control: max-age=0,no-cache,must-revalidate,proxy-revalidate"); header("Last-Modified: {$now} GMT"); // force download header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); // disposition / encoding on response body header("Content-Disposition: attachment;filename={$filename}"); header("Content-Transfer-Encoding: binary"); } php array生成csv文件 <?php $data = array( array( 'row_1_col_1','row_1_col_2','row_1_col_3' ),array( 'row_2_col_1','row_2_col_2','row_2_col_3' ),array( 'row_3_col_1','row_3_col_2','row_3_col_3' ),); $filename = "example"; header("Content-type: text/csv"); header("Content-Disposition: attachment; filename={$filename}.csv"); header("Pragma: no-cache"); header("Expires: 0"); outputCSV($data); function outputCSV($data) { $outputBuffer = fopen("php://output",'w'); foreach($data as $val) { foreach ($val as $key => $val2) { $val[$key] = iconv('utf-8','gbk',$val2); // CSV的Excel支持GBK编码,一定要转换,否则乱码 } fputcsv($outputBuffer,$val); } fclose($outputBuffer); } ?> 办理 fgetcsv函数在php5.2.8 中的bug 环境linux 问题解析出来的数据不完整,有为空的字段 网上查了下说是在php5.2.8 中存在bug 解决方法是使用自定义函数 function __fgetcsv(& $handle,$length = null,$d = ',',$e = '"') { $d = preg_quote($d); $e = preg_quote($e); $_line = ""; $eof=false; while ($eof != true) { $_line .= (empty ($length) ? fgets($handle) : fgets($handle,$length)); $itemcnt = preg_match_all('/' . $e . '/',$_line,$dummy); if ($itemcnt % 2 == 0) $eof = true; } $_csv_line = preg_replace('/(?: |[ ])?$/',$d,trim($_line)); $_csv_pattern = '/(' . $e . '[^' . $e . ']*(?:' . $e . $e . '[^' . $e . ']*)*' . $e . '|[^' . $d . ']*)' . $d . '/'; preg_match_all($_csv_pattern,$_csv_line,$_csv_matches); $_csv_data = $_csv_matches[1]; for ($_csv_i = 0; $_csv_i < count($_csv_data); $_csv_i++) { $_csv_data[$_csv_i] = preg_replace('/^' . $e . '(.*)' . $e . '$/s','$1',$_csv_data[$_csv_i]); $_csv_data[$_csv_i] = str_replace($e . $e,$e,$_csv_data[$_csv_i]); } return empty ($_line) ? false : $_csv_data; } excel无法正确读取长度超过32K的CSV域问题 <?php $now = gmdate("D,d M Y H:i:s"); header("Expires: Tue,03 Jul 2001 06:00:00 GMT"); header("Cache-Control: max-age=0,proxy-revalidate"); header("Last-Modified: {$now} GMT"); // force download header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); // disposition / encoding on response body header("Content-Disposition: attachment;filename={$filename}"); header("Content-Transfer-Encoding: binary"); $items_data=array( '0'=>array('title'=>'test test test1'),'1'=>array('title'=>'test test test2'),'2'=>array('title'=>'test test test3') ) print(chr(0xEF).chr(0xBB).chr(0xBF)); //设置utf-8 + bom,处理汉字显示的乱码 echo array2csv($items_data); function array2csv(array &$array) { if (count($array) == 0) { return null; } ob_start(); $df = fopen("php://output",'w'); fputcsv($df,array_keys(reset($array))); foreach ($array as $row) { fputcsv($df,$row); } fclose($df); return ob_get_clean(); } ?> 导出csv文件数字会自动变科学计数法的解决办法
代码如下:
is_numeric($val)?$val."t":$val; 以上代码内容便是本文实现PHP下载生成的csv文件及问题总结,希望大家喜欢. 编程之家培训学院每天发布《PHP实例:PHP下载生成的csv文件及问题总结》等实战技能,PHP、MYSQL、LINUX、APP、JS,CSS全面培养人才。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |