function download_stock_data_history_by_symbol($stock_symbol)
{
$year = date('Y');
$day = intval(date('d'));
$month = intval(date('m')) - 1;
$historical_stock_data_link_format = 'http://real-chart.finance.yahoo.com/table.csv?s=%s&a=%s&b=%s&c=2013&d=%s&e=%s&f=%s&g=d&ignore=.csv';
$link = sprintf($historical_stock_data_link_format, $stock_symbol, $day, $month, $day, $month, $year);
$historical_stock_data = file_get_contents($link);
// Header row of file
// Date,Open,High,Low,Close,Volume,Adj Close,Symbol
$symbol_included_historical_stock_data = str_replace("\n", ",{$stock_symbol}\n", $historical_stock_data);
$historical_stock_data_directory = get_data_subdirectory('historical_data');
ensure_directory_exists($historical_stock_data_directory);
$historical_stock_data_filename = $stock_symbol . '.csv';
$filepath = $historical_stock_data_directory . $historical_stock_data_filename;
file_put_contents($filepath, $symbol_included_historical_stock_data);
}
<?php
include './utility.php';
ensure_data_directory_exists();
$nyse_download_link = "http://www.nasdaq.com/screening/companies-by-industry.aspx?exchange=NYSE&render=download";
$nasdaq_download_link = "http://www.nasdaq.com/screening/companies-by-industry.aspx?exchange=NASDAQ&render=download";
$listings_dir = get_data_subdirectory('listings');
ensure_directory_exists($listings_dir);
$data = file_get_contents($nyse_download_link);
file_put_contents($listings_dir . "nyse.csv", $data);
$data = file_get_contents($nasdaq_download_link);
file_put_contents($listings_dir . "nasdaq.csv", $data);
function ensure_data_directory_exists()
{
$data_directory = get_data_directory();
ensure_directory_exists($data_directory);
}
function ensure_directory_exists($dirpath, $mode = 0775)
{
if (is_dir($dirpath)) {
return TRUE;
}
if (ensure_directory_exists(dirname($dirpath), $mode)) {
if (mkdir($dirpath)) {
chmod($dirpath, $mode);
return TRUE;
}
}
// Dunno why we'd fail, but fail anyway
return FALSE;
}
