dongtuji0992 2013-10-21 14:19
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使用PHP或PHPExcel删除CSV文件中的空白行?

I am trying programmatically delete blank lines in CSV files using PHP. Files are uploaded to a site and converted to CSV using PHPExcel. A particular type of CSV is being generated with blank lines in between the data rows, and I'm trying to clean them up with PHP without any luck. Here is an example of what this CSV looks like: https://gist.github.com/vinmassaro/467ea98151e26a79d556

I need to load the CSV, remove the blank lines, and save it, using either PHPExcel or standard PHP functions. Thanks in advance.

EDIT: Here is a snippet from how it is currently converted with PHPExcel. This is part of a Drupal hook, acting on a file that has just been uploaded. I couldn't get the PHPExcel removeRow method working because it didn't seem to work on blank lines, only empty data rows.

// Load the PHPExcel IOFactory.
require_once(drupal_realpath(drupal_get_path('module', 'custom')) . '/PHPExcel/Classes/PHPExcel/IOFactory.php');

// Load the uploaded file into PHPExcel for normalization.
$loaded_file = PHPExcel_IOFactory::load(drupal_realpath($original_file->uri));
$writer = PHPExcel_IOFactory::createWriter($loaded_file, 'CSV');
$writer->setDelimiter(",");
$writer->setEnclosure("");

// Get path to files directory and build a new filename and filepath.
$files_directory = drupal_realpath(variable_get('file_public_path', conf_path() . '/files'));
$new_filename = pathinfo($original_file->filename, PATHINFO_FILENAME) . '.csv';
$temp_filepath = $files_directory . '/' . $new_filename;

// Save the file with PHPExcel to the temp location. It will be deleted later.
$writer->save($temp_filepath);
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  • dream1849 2013-10-21 15:08
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    Using str_replace as in Mihai Iorga's comment will work. Something like:

    $csv = file_get_contents('path/file.csv');
    $no_blanks = str_replace("
    
    ", "
    ", $csv);
    file_put_contents('path/file.csv', $no_blanks);
    

    I copied the text from the example you posted, and this worked, although I had to change the "find" parameter to to " " instead of " " because of a single space on each of the blank-looking lines.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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