Current exchange rates for Excel - php

Question

Is there a way to import current exchange rates in MS-Excel and keep them updated?
Excel provides a way of calling a URL and import the response into a cell.
There are several prof. services on the internet but I wanted to make sure that no data is logged and the information provided is up-to-date. And it should be free of charge...

Answer 1

Here is a coding-free solution. You can download data in CSV format from Yahoo Finances and import it to Excel as a query.
How to import the data from Yahoo Finances to Excel?
Go to Data → From Web.
Specify the data URL in the field URL, e.g. for the USD to EUR rate:
http://download.finance.yahoo.com/d/quotes.csv?s=USDEUR=X&f=b
Press Load. The new sheet with the required data will be automatically created.
You can hide the header and the style of the cell by unselecting the Header Row and Banded Rows respectively.
That's all, now you have a cell with the desired data. You can referece to the cell like to any other cell in Excel.
Good to know:
You can manually trigger the data refresh by clicking on Data → Refresh All. For automatic update when a workbook is opened: https://support.office.com/en-US/article/Refresh-an-external-data-connection-in-Excel-2016-for-Windows-1524175f-777a-48fc-8fc7-c8514b984440
The URL in the example above contains the &f=b fragment, which means bid. For the detailed Yahoo Finances query data parameters, please see: http://www.financialwisdomforum.org/gummy-stuff/Yahoo-data.htm

Answer 2

Exchange Rates in Excel
Call the URL http://genia.berlin/usd.php to get the actual exchange rate in comparison to US-Dollar. The accuracy is 4 decimal places. An erroneous call returns an empty result, no error message. One parameter given in ISO 4217 notation, e.g.: http://genia.berlin/usd.php?eur
The information is provided without warranty of any kind!
The step-by-step solution including screenshots can be found here: https://eves.genia.berlin/excelquery_e.html
Create a text file. The name can be freely selected. Please make sure that there is a blank line after the URL.
WEB
1
http://genia.berlin/usd.php?["Currency","Enter currency code (ISO 4217)"]
Selection=EntirePage
Formatting=None
PreFormattedTextToColumns=True
ConsecutiveDelimitersAsOne=True
SingleBlockTextImport=False
DisableDateRecognition=False
DisableRedirections=True
Select a stored request
Start Excel and display the following menu: Data / Get External Data / Run Saved Query ...
Type the location and name of the text file (for example, excelquery.txt) from the previous section.
The query is treated as a formula. The assigned cell can be stored in another worksheet.
Selection of external data
In selecting the properties different settings such as automatic updating can be set when opening the Excel document.
Selection of currency as a parameter
There are three possible ways to select the currency as a parameter.
Input by user (Prompt for value using this string)
Specifying a string, for example EUR (Use this value)
Specifying an Excel cell containing a string (Get the value from
this cell)
Input by user
The user is prompted in a dialog to specify the currency. He can also determine whether the input is to be used again in future updates of the same document.
Next time you call the Excel file a warning is issued. The connection for data retrieval must be confirmed by the user.
Here is the code snipped (PHP) on the server side:
<?php
if ($p= substr ($_SERVER['QUERY_STRING'], 0, 3)) {
$pu= strtoupper ($p);
if (preg_match ('/^(?:
BGN|CHF|CZK|DKK|EEK|EUR|GBP|HRK|HUF|ISK|LTL|LVL|MDL|MKD|NOK|PLN|RON|RSD|RUB|SEK|SKK|TRY|UAH|
BDT|BND|CNY|FJD|HKD|IDR|INR|JPY|KRW|LKR|MVR|MYR|NPR|PHP|PKR|SGD|THB|TWD|VND|IQD|
ANG|ARS|BOB|BRL|CAD|CLP|COP|CRC|DOP|HNL|KYD|MXN|NIO|PEN|PYG|SVC|TTD|UYU|VEF|
BWP|DZD|EGP|KES|MAD|MUR|NAD|NGN|PGK|SCR|SLL|TZS|UGX|XOF|ZAR|ZMK|
AED|AUD|BHD|ILS|JOD|KWD|KZT|LBP|NZD|OMR|QAR|SAR|TND|UZS|YER
)$/x', $pu)) {
$pl= strtolower ($p);
if ($x= simplexml_load_file ("http://xxxxx/$pl.xml", null, LIBXML_NOCDATA)) {
if (preg_match ("/(\d+)\.(\d+)\s*$pu/", (string) $x->channel->item->description, $currency)) {
header ('Content-type: text/plain');
header ('Cache-Control: no-cache, must-revalidate');
echo "$currency[1],$currency[2]"; //Excel braucht Komma statt Punkt
exit;
}
}
}
}
header ('HTTP/1.1 204 No Content', true, 204);