PHP open csv and save data to new csv - php

Question

I need to replace a lot of data in csv and after changing all things i want it saved to a new csv file.
i can read the csv with the code from php.net but i can't get it to work saving the new file. i have this
$row = 0;
if (($handle = fopen("original.csv", "r")) !== FALSE) {
while (($data = fgetcsv($handle, 20000, ";")) !== FALSE) {
$num = count($data);
$cat_alt = ['cold', 'hot', ... and so on...];
$cat_neu = ['kalt', 'heiß', ...und so weiter...];
echo "<p> $num Felder in Zeile $row: <br /></p>\n";
$row++;
for ($c=0; $c < $num; $c++) {
$output = str_replace($cat_alt, $cat_neu, $data[$c] . "<br />\n");
echo $output;
}
}
}
$fp = fopen('changed.csv', 'w');
foreach ($row as $rows) {
fputcsv($fp, $rows);
}fclose($fp);

Answer 1

You have two options:
Use n array
$rows = []
...
$rows[] = str_replace($cat_alt, $cat_neu, $data[$c] . "\n");
...
fputcsv($fp, $rows);
Open the output file beforehand and write to it as you process the data
$fp = fopen('changed.csv', 'w');
if (($handle = fopen("original.csv", "r")) !== FALSE) {
while (($data = fgetcsv($handle, 20000, ";")) !== FALSE) {
$num = count($data);
$cat_alt = ['cold', 'hot', ... and so on...];
$cat_neu = ['kalt', 'heiß', ...und so weiter...];
echo "<p> $num Felder in Zeile $row: <br /></p>\n";
$row++;
for ($c=0; $c < $num; $c++) {
fputs($fp, str_replace($cat_alt, $cat_neu, $data[$c] . "<br />\n"));
}
}
}
fclose($fp);