2 /**********************************************************************
3 Copyright (C) FrontAccounting, LLC.
4 Released under the terms of the GNU General Public License, GPL,
5 as published by the Free Software Foundation, either version 3
6 of the License, or (at your option) any later version.
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
11 ***********************************************************************/
12 //---------------------------------------------------------------------------------------------
13 function get_exchange_rate($rate_id)
15 $sql = "SELECT * FROM ".TB_PREF."exchange_rates WHERE id=".db_escape($rate_id);
16 $result = db_query($sql, "could not get exchange rate for $rate_id");
18 return db_fetch($result);
21 // Retrieves buy exchange rate for given currency/date, zero if no result
22 function get_date_exchange_rate($curr_code, $date_)
24 $date = date2sql($date_);
25 $sql = "SELECT rate_buy FROM ".TB_PREF."exchange_rates WHERE curr_code=".db_escape($curr_code)
26 ." AND date_='$date'";
27 $result = db_query($sql, "could not get exchange rate for $curr_code - $date_");
29 if(db_num_rows($result) == 0)
31 $row = db_fetch($result);
35 //---------------------------------------------------------------------------------------------
37 function update_exchange_rate($curr_code, $date_, $buy_rate, $sell_rate)
39 if (is_company_currency($curr_code))
40 display_db_error("Exchange rates cannot be set for company currency", "", true);
42 $date = date2sql($date_);
44 $sql = "UPDATE ".TB_PREF."exchange_rates SET rate_buy=$buy_rate, rate_sell=".db_escape($sell_rate)
45 ." WHERE curr_code=".db_escape($curr_code)." AND date_='$date'";
47 db_query($sql, "could not add exchange rate for $curr_code");
50 //---------------------------------------------------------------------------------------------
52 function add_exchange_rate($curr_code, $date_, $buy_rate, $sell_rate)
54 if (is_company_currency($curr_code))
55 display_db_error("Exchange rates cannot be set for company currency", "", true);
57 $date = date2sql($date_);
59 $sql = "INSERT INTO ".TB_PREF."exchange_rates (curr_code, date_, rate_buy, rate_sell)
60 VALUES (".db_escape($curr_code).", '$date', ".db_escape($buy_rate)
61 .", ".db_escape($sell_rate).")";
62 db_query($sql, "could not add exchange rate for $curr_code");
65 //---------------------------------------------------------------------------------------------
67 function delete_exchange_rate($rate_id)
69 $sql = "DELETE FROM ".TB_PREF."exchange_rates WHERE id=".db_escape($rate_id);
70 db_query($sql, "could not delete exchange rate $rate_id");
73 //-----------------------------------------------------------------------------
74 // Retrieve exchange rate as of date $date from external source (usually inet)
76 function retrieve_exrate($curr_b, $date)
80 if (method_exists($Hooks, 'retrieve_exrate'))
81 return $Hooks->retrieve_exrate($curr_b, $date);
83 return get_extern_rate($curr_b, 'ECB', $date);
85 //-----------------------------------------------------------------------------
87 function get_extern_rate($curr_b, $provider = 'ECB', $date)
89 $curr_a = get_company_pref('curr_default');
90 if ($provider == 'ECB')
92 $filename = "/stats/eurofxref/eurofxref-daily.xml";
93 $site = "www.ecb.int";
95 elseif ($provider == 'YAHOO')
97 $filename = "/q?s={$curr_a}{$curr_b}=X";
98 $site = "finance.yahoo.com";
100 elseif ($provider == 'GOOGLE')
102 $filename = "/finance/converter?a=1&from={$curr_a}&to={$curr_b}";
103 $site = "finance.google.com";
107 if (function_exists('curl_init'))
108 { // first check with curl as we can set short timeout;
112 curl_setopt ($ch, CURLOPT_URL, 'http://'.$site.$filename);
113 curl_setopt ($ch, CURLOPT_COOKIEJAR, "cookie.txt");
114 curl_setopt ($ch, CURLOPT_HEADER, 0);
115 curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
116 curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
117 curl_setopt ($ch, CURLOPT_TIMEOUT, 3);
118 $contents = curl_exec ($ch);
120 // due to resolver bug in some curl versions (e.g. 7.15.5)
121 // try again for constant IP.
122 $site="195.128.2.97";
123 } while( ($contents == '') && $retry--);
126 $handle = @fopen("http://".$site.$filename, 'rb');
130 $data = @fread( $handle, 4096 );
131 if ( strlen ( $data ) == 0 )
133 $contents .= $data; // with this syntax only text will be translated, whole text with htmlspecialchars($data)
140 display_warning(_("Cannot retrieve currency rate from $provider page. Please set the rate manually."));
142 if ($provider == 'ECB')
144 $contents = str_replace ("<Cube currency='USD'", " <Cube currency='EUR' rate='1'/> <Cube currency='USD'", $contents);
145 $from_mask = "|<Cube\s*currency=\'" . $curr_a . "\'\s*rate=\'([\d.,]*)\'\s*/>|i";
146 preg_match ( $from_mask, $contents, $out );
147 $val_a = isset($out[1]) ? $out[1] : 0;
148 $val_a = str_replace ( ',', '', $val_a );
149 $to_mask = "|<Cube\s*currency=\'" . $curr_b . "\'\s*rate=\'([\d.,]*)\'\s*/>|i";
150 preg_match ( $to_mask, $contents, $out );
151 $val_b = isset($out[1]) ? $out[1] : 0;
152 $val_b = str_replace ( ',', '', $val_b );
155 $val = $val_a / $val_b;
162 elseif ($provider == 'YAHOO')
165 if (preg_match('/Last\sTrade:(.*?)Trade\sTime/s', $contents, $matches)) {
166 $val = strip_tags($matches[1]);
167 $val = str_replace(',', '', $val);
172 elseif ($provider == 'GOOGLE')
175 $regexp = "%([\d|.]+)\s+{$curr_a}\s+=\s+<span\sclass=(.*)>([\d|.]+)\s+{$curr_b}\s*</span>%s";
176 if (preg_match($regexp, $contents, $matches))
179 $val = str_replace(',', '', $val);
185 } /* end function get_extern_rate */