How to extract data from csv file in PHP

Question

I have a csv file which looks like this

$lines[0] = \"text, with commas\", \"another text\", 123, \"text\",5;
$lines[1] = \"some without commas\", \"another          


        

Answer 1

In addition to Matt's suggestion, you can also use SplFileObject to read in the file:

$file = new SplFileObject("data.csv");
$file->setFlags(SplFileObject::READ_CSV);
$file->setCsvControl(',', '"', '\\'); // this is the default anyway though
foreach ($file as $row) {
    list ($fruit, $quantity) = $row;
    // Do something with values
}

^{source: http://de.php.net/manual/en/splfileobject.setcsvcontrol.php}

Answer 2

Suppose you have a create a function for same things, Then it should look like

function csvtoarray($filename='', $delimiter){

    if(!file_exists($filename) || !is_readable($filename)) return FALSE;
    $header = NULL;
    $data = array();

    if (($handle = fopen($filename, 'r')) !== FALSE ) {
        while (($row = fgetcsv($handle, 1000, $delimiter)) !== FALSE)
        {   
            if(!$header){
                $header = $row;
            }else{
                $data[] = array_combine($header, $row);
            }
        }
        fclose($handle);
    }
    if(file_exists($filename)) @unlink($filename);

    return $data;
}

$data = csvtoarray('file.csv', ',');

print_r($data);

Answer 3

You can use fgetcsv to parse a CSV file without having to worry about parsing it yourself.

Example from PHP Manual:

$row = 1;
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
        $num = count($data);
        echo "<p> $num fields in line $row: <br /></p>\n";
        $row++;
        for ($c=0; $c < $num; $c++) {
            echo $data[$c] . "<br />\n";
        }
    }
    fclose($handle);
}

Answer 4

/**
 * @return mixed[]
 */
public function csvToArray(string $delimiter, string $filename = ''): array
{
    $data = [];
    if (file_exists($filename) && is_readable($filename)) {
        $header = null;

        if (($handle = fopen($filename, 'r')) !== false) {
            while (($row = fgetcsv($handle, 1000, $delimiter)) !== false) {
                if (!$header) {
                    $header = $row;
                } else {
                    $data[] = array_combine($header, $row);
                }
            }
            fclose($handle);
        }
    }

    return $data;
}

Answer 5

When you want to keep the index (first line) for multidimensional result array, you can use:

$delim      = ';';
$csvFile    = file($csv_file);
$firstline  = str_getcsv($csvFile[0], $delim);
$data       = array();
foreach ($csvFile as $line) {
    $line   = str_getcsv($line, $delim);
    $data[] = array_combine($firstline, $line);
}