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

I've built an application to extract data from a CSV file , this php application was used to show a daily quote for users.

The full project on github: 365-quotes-php-csv.

Also this is the class Code for the application i've built

  <?php
/*
Main Class 
please note :
1- the CSV file must be comma separated (,) and each line must End with (;).
2- Feel free to edit the all.CSV file and add all of your 366 New Quotes.
3- don't change any thing specially the CSV file Location.
---------------------------------------------------------------------------
RISS.WORK all copy rights reserved 2018
please Don't Remove
Github/RissWork
Email : info@riss.work
*/
class Quote{

    //properties
        private $_quote,$_allQuotes;
        private static $_instance = null;

    //Constructor
        private function __construct(){
            //Day Count
            $dayCount = date(z);

            if($this->readCsvAndGetQuote($dayCount)){
                return $this->getQuote();
            }else{
                echo 'Error Cannot open the .CSV File';
            }
        }





    //Methods

    //get Instance
    public function getInstance(){
            if(!isset(self::$_instance)){
                self::$_instance = new Quote();
            }
            return self::$_instance;
        }//end of get Instance




    //get daily Quote   
    public function getQuote(){
            return $this->_quote;
        }//end of get Quote




    //Read CSV
    private function readCsvAndGetQuote($dayCount = 1 ){

        if(($handel = fopen("csv/all.csv" , "r")) !== false){
            $this->_allQuotes = fgetcsv($handel,1000000,';');
            $this->_quote = explode(',',$this->_allQuotes[$dayCount]);
            return true;
        }
        return false;

    }//end of read CSV



}//end of Class

Answer 2

here is also a simple method to get read csv file.

$sfp = fopen('/path/to/source.csv','r'); 
$dfp = fopen('/path/to/destination.csv','w'); 
while ($row = fgetcsv($sfp,10000,",","")) { 
 $goodstuff = ""; 
 $goodstuff = str_replace("¦",",",$row[2]); 
 $goodstuff .= "\n"; 
 fwrite($dfp,$goodstuff); 
} 
fclose($sfp); 
fclose($dfp);

Answer 3

Maybe my code solves your problem:

// Parse all content from csv file and generate array from line.
function csv_content_parser($content) {
  foreach (explode("\n", $content) as $line) {
    // Generator saves state and can be resumed when the next value is required.
    yield str_getcsv($line);
  }
}
// Get content from csv file.
$content = file_get_contents('your_file.csv');
// Create one array from csv file's lines.
$data = array();
foreach (csv_content_parser($content) as $fields) {
  array_push($data, $fields);
}

In result you have an array with all values from csv. It would be something like:

Array
(
    [0] => Array
        (
            [0] => text, with commas
            [1] => another text
            [2] => 123
            [3] => text
            [4] => 5
        )

    [1] => Array
        (
            [0] => some without commas
            [1] => another text
            [2] => 123
            [3] => text
        )

    [2] => Array
        (
            [0] => some text, with comma,s or no
            [1] =>  NULL 
            [2] => 123
            [3] => text
        )

)

Answer 4

You could use something like https://github.com/htmlburger/carbon-csv that allows column mapping:

$csv = new \Carbon_CSV\CsvFile('path-to-file/filename.csv');
$csv->set_column_names([
    0 => 'first_name',
    1 => 'last_name',
    2 => 'company_name',
    3 => 'address',
]);
foreach ($csv as $row) {
    print_r($row);
}

The result of the below code would be something like:

Array
(
    [0] => Array
        (
            [first_name] => John
            [last_name] => Doe
            [company_name] => Simple Company Name
            [address] => Street Name, 1234, City Name, Country Name
        )
    [1] => Array
        (
            [first_name] => Jane
            [last_name] => Doe
            [company_name] => Nice Company Name
            [address] => Street Name, 5678, City Name, Country Name
        )
)

Another library that does the same thing(and much more) is http://csv.thephpleague.com/9.0/reader/

Answer 5

you can read the data using the following function.

  function readCSV() {
    $csv = array_map('str_getcsv', file('data.csv'));
    array_shift($csv); //remove headers


}

http://www.pearlbells.co.uk/how-to-sort-a1a2-z9z10aa1aa2-az9az10-using-php/

Answer 6

Return a php mapping array with the column of interests :

public function extractCSVDatas($file_uri) {
    $AliasToSystemPathMappingArray = [];
    if (($handle = fopen($file_uri, "r")) !== FALSE) {
      $csv = array_map('str_getcsv', file($file_uri));

      //remove header and choose columns among the list:
      foreach((array_slice($csv,1)) as $line) {
        list($id, $alias, $systemPath) = explode(';',$line[0]);
        $AliasToSystemPathMappingArray[] = [$alias, $systemPath];
      }
      fclose($handle);
    }
    return $AliasToSystemPathMappingArray;
  }