CSV文件中的空行

Question

I need a little help, I exporting table to csv file, and this added me a 8 empty rows. Why ? Maybe anybody can help me a little bit.

export.ctp file

<?php
foreach ($data as $row):
    foreach ($row['Kontaktid'] as &$cell):
        // Escape double quotation marks
        $cell = '"' . preg_replace('/"/','""',$cell) . '"';
    endforeach;
    echo implode(',', $row['Kontaktid']) . "\n";
endforeach;
?>

And this is doing this

But I dont want these empty rows, when I import this file to mysql, then its added these empty rows too.

Thanks for helping !

If I type var dump, then I get this.

Answer 1

Try this:

$fh = fopen('./file1.csv', 'wt');
foreach ($data as $row) {
    if (! empty($row['Kontaktid'])) {
        fputcsv($fh, $row['Kontaktid']);
    }
}
fclose($fh);

Replace './file1.csv' with your filename and path. If you need to dump the CSV content on screen then replace the first line with $fh = STDOUT;

Answer 2

Using you code:

<?php
foreach ($data as $row):
    $isRowEmpty = false;
    foreach ($row['Kontaktid'] as &$cell):
        // we assume the row is empty if the first cell is empty
        if(empty($cell)) {
            $isRowEmpty = true;
            break;
        } else {
            // Escape double quotation marks
            $cell = '"' . preg_replace('/"/','""',$cell) . '"';
        }
    endforeach;
    if(!$isRowEmpty) {
        echo implode(',', $row['Kontaktid']) . "\n";
    }
endforeach;
?>

Hope this helps!

Answer 3

Just check, your line not empty:

<?php
foreach ($data as $row):
    if (!isset($row['Kontaktid']) || !$row['Kontaktid']) continue; // <-add this line
    foreach ($row['Kontaktid'] as &$cell):
        // Escape double quotation marks
        $cell = '"' . preg_replace('/"/','""',$cell) . '"';
    endforeach;
    echo implode(',', $row['Kontaktid']) . "\n";
endforeach;

May be issue is not in this code.
Check twice, that you have not any linefeeds echoing anywhere.
May be anything like:

   <?php
     //php code
    ?>
    ↓
    ↓
    ↓

All content outside your <?php ?> block is silent equivalent of echo "...";
So, these linefeeds are printed like echo "\\n\\n\\n\\n";

Good practice is to remove last ?> at all

Answer 4

add this:

if (isset($row['Kontaktid']) && strlen($row['Kontaktid']) && !empty($row['Kontaktid']))

before:

echo implode(',', $row['Kontaktid']) . "\n";