Code Samples: csv

Showing posts with label csv. Show all posts

Monday, February 25, 2019

Online CSV Viewer

Use this tool as a CSV Viewer capable of reading delimited data.

Online Viewer

Saturday, January 27, 2018

How to create and download a csv file from php script | PHP : Array To CSV - Download CSV File | Creating downloadable CSV files using PHP

CSV (comma-separated values) is the most widely supported format for transferring tabular data between applications. The ability to export data in CSV format is a useful feature for many programs, and is becoming increasingly common in web applications. This page explains how to use PHP to create CSV files, and how to ensure that your visitor’s browser offers to download the file instead of displaying it.



<?php
header("Content-type:application/octet-stream");
header("Content-Disposition:attachment;filename='PHP Download as CSV.csv'");
$out = fopen('php://output', 'w');

# If you want to process static data
fputcsv($out, array("Name", "Roll"));
fputcsv($out, array("Pritom 1", "Roll 1", "Extra 1"));
fputcsv($out, array("Pritom 2", "Roll 2", "Extra 2"));

# Fetch data from MySQL
mysql_connect('localhost', 'root', '');
mysql_select_db('test');
$rows = mysql_query('SELECT * FROM t1');

// loop over the rows, outputting them
while ($row = mysql_fetch_assoc($rows)) fputcsv($out, $row);

fclose($out);



In a real application the database connection parameters should be defined as constants in a separate configuration file.

Friday, October 10, 2014

Read & Construct CSV File Using Java Code

http://agiletribe.wordpress.com/2012/11/23/the-only-class-you-need-for-csv-files

Input CSV File

package com.pritom.kumar;

import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by pritom on 10/10/2014.
 */
public class ReadCsvFile {
    final static Charset ENCODING = StandardCharsets.UTF_8;
    private Integer maxRowSize = 0;
    List dataList = new ArrayList();
    public String DELIMITER = ",";

    public static void main(String[] args) throws Exception {
        ReadCsvFile readCsvFile = new ReadCsvFile();
        Long started = System.currentTimeMillis();
        readCsvFile.run();
        Long finished = System.currentTimeMillis();
        Long timeTaken = finished - started;
        readCsvFile.prettyPrint();
        readCsvFile.println("Time Taken: " + timeTaken + " Milli Seconds.");
        readCsvFile.println(readCsvFile.toHtml("csv-output.html"));
        readCsvFile.println(readCsvFile.toCsv("csv-output.csv"));
        System.exit(200);
    }

    public String toCsv(String fileName) throws Exception {
        File file = new File(fileName);
        List fileLines = new ArrayList();
        for (Object object : dataList) {
            fileLines.add(listToBuffer((List) object).toString());
        }
        writeStringList(fileLines, file.getAbsolutePath());
        return file.getAbsolutePath();
    }

    private StringBuffer listToBuffer(List data) {
        StringBuffer stringBuffer = new StringBuffer();
        Boolean firstValue = true;
        for (Object value : data) {
            String line = value.toString();
            if (!firstValue) {
                stringBuffer.append(DELIMITER);
            }
            stringBuffer.append("\"");
            for (Integer index = 0; index < line.length(); index++) {
                char chars = line.charAt(index);
                if (chars == '\"') {
                    stringBuffer.append("\"");
                }
                stringBuffer.append(chars);
            }
            stringBuffer.append("\"");
            firstValue = false;
        }
        return stringBuffer;
    }

    public String toHtml(String fileName) throws Exception {
        File file = new File(fileName);
        List fileLines = new ArrayList();
        for (Integer dataIndex = 0; dataIndex < dataList.size(); dataIndex++) {
            List columnData = (ArrayList) dataList.get(dataIndex);
            maxRowSize = columnData.size() > maxRowSize ? columnData.size() : maxRowSize;
        }
        StringBuffer stringBuffer = new StringBuffer();
        stringBuffer.append("<table>");
        for (Integer dataIndex = 0; dataIndex < dataList.size(); dataIndex++) {
            List columnData = (ArrayList) dataList.get(dataIndex);
            stringBuffer.append("<tr><td>" + (dataIndex + 1) + "</td>");
            for (Integer headerIndex = 0; headerIndex < maxRowSize; headerIndex++) {
                stringBuffer.append("<td style='border: 1px solid black;'>" +(columnData.size() > headerIndex ? columnData.get(headerIndex) : "") + "&nbsp;</td>");
            }
            stringBuffer.append("</tr>\n");
            if (dataIndex % 10 == 0) {
                fileLines.add(stringBuffer.toString());
                stringBuffer = new StringBuffer();
            }
        }
        stringBuffer.append("</table>");
        fileLines.add(stringBuffer.toString());
        writeStringList(fileLines, file.getAbsolutePath());
        return file.getAbsolutePath();
    }

    public Boolean writeStringList(List<String> aLines, String aFileName) throws IOException {
        try {
            Path path = Paths.get(aFileName);
            Files.write(path, aLines, ENCODING);
            return true;
        }
        catch (Exception ex) {
            ex.printStackTrace();
            return false;
        }
    }

    public void prettyPrint() {
        for (Integer dataIndex = 0; dataIndex < dataList.size(); dataIndex++) {
            List columnData = (ArrayList) dataList.get(dataIndex);
            print((dataIndex + 1) + ": ");
            for (Integer headerIndex = 0; headerIndex < columnData.size(); headerIndex++) {
                print("<" + columnData.get(headerIndex) + ">");
                if (headerIndex + 1 < columnData.size()) {
                    print(", ");
                }
            }
            println("");
        }
    }

    public void run() throws Exception {
        String csvFile = "input.csv";
        BufferedReader br = null;
        FileReader fileReader = new FileReader(csvFile);
        String line = "";
        try {
            br = new BufferedReader(fileReader);
            while ((line = br.readLine()) != null) {
                if (line.trim().length() > 0) {
                    List tempDataList = parseLine(line.trim());
                    maxRowSize = tempDataList.size() > maxRowSize ? tempDataList.size() : maxRowSize;
                    dataList.add(tempDataList);
                }
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (fileReader != null) {
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    private List parseLine(String string) throws Exception{
        InputStream stream = new ByteArrayInputStream(string.getBytes("UTF-8"));
        Reader fr = new InputStreamReader(stream, "UTF-8");
        int chars = fr.read();
        while (chars == '\r') {
            chars = fr.read();
        }
        if (chars < 0) {
            return new ArrayList();
        }
        List dataList = new ArrayList();
        StringBuffer stringBuffer = new StringBuffer();
        Boolean inQuotes = false, lineStarted = false;
        while (chars > 0) {
            if (inQuotes) {
                lineStarted = true;
                if (chars == '\"') {
                    inQuotes = false;
                }
                else {
                    stringBuffer.append((char) chars);
                }
            }
            else {
                if (chars == '\"') {
                    inQuotes = true;
                    if (lineStarted) {
                        stringBuffer.append('\"');
                    }
                }
                else if (chars == DELIMITER.charAt(0)) {
                    dataList.add(stringBuffer.toString());
                    stringBuffer = new StringBuffer();
                    lineStarted = false;
                }
                else if (chars == '\r') {

                }
                else if (chars == '\n') {
                    break;
                }
                else {
                    stringBuffer.append((char) chars);
                }
            }
            chars = fr.read();
        }
        dataList.add(stringBuffer.toString());
        return dataList;
    }

    private void print(Object object) {
        System.out.print(object);
    }

    private void println(Object object) {
        System.out.println(object);
    }
}

Output would be like this:

1: <permalink>, <company>, <numEmps>, <category>, <city>, <state>, <fundedDate>, <raisedAmt>, <raisedCurrency>, <round>
2: <lifelock>, <LifeLock Limited,Company">, <>, <web>, <Tempe>, <AZ>, <1-May-07>, <6850000>, <USD>, <b>
....................
1459: <myrio>, <Myrio>, <75>, <software>, <Bothell>, <WA>, <1-Jan-01>, <20500000>, <USD>, <unattributed>
1460: <grid-networks>, <Grid Networks>, <>, <web>, <Seattle>, <WA>, <30-Oct-07>, <9500000>, <USD>, <a>
1461: <grid-networks>, <Grid Networks>, <>, <web>, <Seattle>, <WA>, <20-May-08>, <10500000>, <USD>, <b>
Time Taken: 96 Milli Seconds.
C:\codes\javap\csv-output.html
C:\codes\javap\csv-output.csv

Monday, August 25, 2014

Python Read & Write Csv Files

import csv
from random import randint

class CsvObj:
    def __init__(self):
        self.kset = []
        self.vset = []
    def setheader(self, h):
        self.kset = h
    def addvalue(self, v):
        self.vset.append(v)
    def prettyprint(self):
        for obj in self.vset:
            pos = 0
            print '-----------------------------------------------------'
            for key in self.kset:
                print key, ': ', str(obj[pos])
                pos = pos + 1

    def tocsv(self, name):
        with open(name, 'w') as fp:
            a = csv.writer(fp, delimiter=',')
            data = []
            data.append(self.kset)
            for row in self.vset:
                row[0] = '%s , " , %s' % (str(row[0]), str(row[1]))
                data.append(row)
            a.writerows(data)
        return True
    

csvobj = CsvObj()
with open('countrylist.csv', 'rb') as f:
    reader = csv.reader(f)
    pos = 0
    for row in reader:
        if pos == 0:
            csvobj.setheader(row)                
        else:
            csvobj.addvalue(row)
        pos = pos + 1

print csvobj.prettyprint()
csvname = 'csv%s.csv' % str(randint(0, 99999))
if csvobj.tocsv(csvname) == True:
    print 'Csv %s created' % (csvname)

Output would be like this:

-----------------------------------------------------
Order :  1
Name :  Albania
Name :  Republic of Albania
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Tirana
Currency Code :  ALL
Currency Name :  Lek
Telephone Code :  +355
Letter Code :  AL
Letter Code :  ALB
Number :  008
Country Code TLD :  .al
-----------------------------------------------------
Order :  2
Name :  Algeria
Name :  People's Democratic Republic of Algeria
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Algiers
Currency Code :  DZD
Currency Name :  Dinar
Telephone Code :  +213
Letter Code :  DZ
Letter Code :  DZA
Number :  012
Country Code TLD :  .dz
-----------------------------------------------------
Order :  3
Name :  Andorra
Name :  Principality of Andorra
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Andorra la Vella
Currency Code :  EUR
Currency Name :  Euro
Telephone Code :  +376
Letter Code :  AD
Letter Code :  AND
Number :  020
Country Code TLD :  .ad
-----------------------------------------------------
Order :  4
Name :  Angola
Name :  Republic of Angola
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Luanda
Currency Code :  AOA
Currency Name :  Kwanza
Telephone Code :  +244
Letter Code :  AO
Letter Code :  AGO
Number :  024
Country Code TLD :  .ao
-----------------------------------------------------
Order :  5
Name :  Antigua and Barbuda
Name :  
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Saint John's
Currency Code :  XCD
Currency Name :  Dollar
Telephone Code :  +1-268
Letter Code :  AG
Letter Code :  ATG
Number :  028
Country Code TLD :  .ag
-----------------------------------------------------
Order :  6
Name :  Argentina
Name :  Argentine Republic
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Buenos Aires
Currency Code :  ARS
Currency Name :  Peso
Telephone Code :  +54
Letter Code :  AR
Letter Code :  ARG
Number :  032
Country Code TLD :  .ar
-----------------------------------------------------
Order :  7
Name :  Armenia
Name :  Republic of Armenia
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Yerevan
Currency Code :  AMD
Currency Name :  Dram
Telephone Code :  +374
Letter Code :  AM
Letter Code :  ARM
Number :  051
Country Code TLD :  .am
-----------------------------------------------------
Order :  8
Name :  Australia
Name :  Commonwealth of Australia
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Canberra
Currency Code :  AUD
Currency Name :  Dollar
Telephone Code :  +61
Letter Code :  AU
Letter Code :  AUS
Number :  036
Country Code TLD :  .au
-----------------------------------------------------
Order :  9
Name :  Austria
Name :  Republic of Austria
Type :  Independent State
Sub Type :  
Sovereignty :  
Capital :  Vienna
Currency Code :  EUR
Currency Name :  Euro
Telephone Code :  +43
Letter Code :  AT
Letter Code :  AUT
Number :  040
Country Code TLD :  .at

...................................

Csv csv55227.csv created

Tuesday, July 30, 2013

How to output MySQL query results in csv format

From http://www.tech-recipes.com/rx/1475/save-mysql-query-results-into-a-text-or-csv-file/

SELECT order_id,product_name,qty
FROM orders
INTO OUTFILE '/tmp/orders.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'

Monday, April 29, 2013

Create and download csv file from array using php

Create and download csv file from array using php.

<?php
function arrayToCsv( array $fields, $delimiter = ';', $enclosure = '"', $encloseAll = false, $nullToMysqlNull = false ) {
    $delimiter_esc = preg_quote($delimiter, '/');
    $enclosure_esc = preg_quote($enclosure, '/');

    $outputString = "";
    foreach($fields as $tempFields) {
        $output = array();
        foreach ( $tempFields as $field ) {
            if ($field === null && $nullToMysqlNull) {
                $output[] = "NULL";
                continue;
            }

            // Enclose fields containing $delimiter, $enclosure or whitespace
            if ( $encloseAll || preg_match( "/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field ) ) {
                $output[] = $enclosure . str_replace($enclosure, $enclosure . $enclosure, $field) . $enclosure;
            }
            else {
                $output[] = $field;
            }
        }
        $outputString .= implode( $delimiter, $output )."\n";
    }
    return $outputString;
}
?>

Use:

<?php
$dataArray = array();
array_push($dataArray, array(
    "First Name",
    "Last Name",
    "Number",
    "Group"
));
foreach($dataList as $index => $data) {
    array_push($dataArray, array(
        "".$data["first_name"],
        "".$data["last_name"],
        "".$data["mobile_number"],
        "".$data["group_name"]
    ));
}
$csvString = arrayToCsv($dataArray);
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=list.csv");
header("Pragma: no-cache");
header("Expires: 0");
echo $csvString;
?>

Read and parse csv file using php code

Details http://code.google.com/p/parsecsv-for-php/
Or download from here

Use:

require_once('../parsecsv.lib.php');
# create new parseCSV object.
$csv = new parseCSV();
# Parse '_books.csv' using automatic delimiter detection...

$csv->conditions = 'author does not contain dan brown';
$csv->conditions = 'rating < 4 OR author is John Twelve Hawks';
$csv->conditions = 'rating > 4 AND author is Dan Brown';

$csv->sort_by = 'title';

# offset from the beginning of the file,
# ignoring the first X number of rows.
$csv->offset = 2;

# limit the number of returned rows.
$csv->limit = 3;

$csv->auto('_books.csv');

foreach ($csv->titles as $value);
foreach ($csv->data as $key => $row);

Pages

Monday, February 25, 2019

Online CSV Viewer

Saturday, January 27, 2018

How to create and download a csv file from php script | PHP : Array To CSV - Download CSV File | Creating downloadable CSV files using PHP

Friday, October 10, 2014

Read & Construct CSV File Using Java Code

Output would be like this:

Monday, August 25, 2014

Python Read & Write Csv Files

Output would be like this:

Tuesday, July 30, 2013

How to output MySQL query results in csv format

Monday, April 29, 2013

Create and download csv file from array using php

Read and parse csv file using php code