PHP货币换算程序代码
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<?php /* * File: CurrencyConverter.php * Author: Simon Jarvis * Copyright: 2005 Simon Jarvis * Date: 10/12/05 * Link: http://www.white-hat-web-design.co.uk/articles/php-currency-conversion.php * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details: * http://www.gnu.org/licenses/gpl.html * */ class CurrencyConverter { var $xml_file = "www.ecb.int/stats/eurofxref/eurofxref-daily.xml"; var $mysql_host, $mysql_user, $mysql_pass, $mysql_db, $mysql_table; var $exchange_rates = array(); //Load Currency Rates function CurrencyConverter($host,$user,$pass,$db,$tb) { $this->mysql_host = $host; $this->mysql_user = $user; $this->mysql_pass = $pass; $this->mysql_db = $db; $this->mysql_table = $tb; $this->checkLastUpdated(); $conn = mysql_connect($this->mysql_host,$this->mysql_user,$this->mysql_pass); $rs = mysql_select_db($this->mysql_db,$conn); $sql = "SELECT * FROM ".$this->mysql_table; $rs = mysql_query($sql,$conn); while($row = mysql_fetch_array($rs)) { $this->exchange_rates[$row['currency']] = $row['rate']; } } /* Perform the actual conversion, defaults to £1.00 GBP to USD */ function convert($amount=1,$from="GBP",$to="USD",$decimals=2) { return(number_format(($amount/$this->exchange_rates[$from])*$this->exchange_rates[$to],$decimals)); } /* Check to see how long since the data was last updated */ function checkLastUpdated() { $conn = mysql_connect($this->mysql_host,$this->mysql_user,$this->mysql_pass); $rs = mysql_select_db($this->mysql_db,$conn); $sql = "SHOW TABLE STATUS FROM ".$this->mysql_db." LIKE '".$this->mysql_table."'"; $rs = mysql_query($sql,$conn); if(mysql_num_rows($rs) == 0 ) { $this->createTable(); } else { $row = mysql_fetch_array($rs); if(time() > (strtotime($row["Update_time"])+(12*60*60)) ) { $this->downloadExchangeRates(); } } } /* Download xml file, extract exchange rates and store values in database */ function downloadExchangeRates() { $currency_domain = substr($this->xml_file,0,strpos($this->xml_file,"/")); $currency_file = substr($this->xml_file,strpos($this->xml_file,"/")); $fp = @fsockopen($currency_domain, 80, $errno, $errstr, 10); if($fp) { $out = "GET ".$currency_file." HTTP/1.1rn"; $out .= "Host: ".$currency_domain."rn"; $out .= "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5rn"; $out .= "Connection: Closernrn"; fwrite($fp, $out); while (!feof($fp)) { $buffer .= fgets($fp, 128); } fclose($fp); $pattern = "{<Cubes*currency='(w*)'s*rate='([d.]*)'/>}is"; preg_match_all($pattern,$buffer,$xml_rates); array_shift($xml_rates); for($i=0;$i<count($xml_rates[0]);$i++) { $exchange_rate[$xml_rates[0][$i]] = $xml_rates[1][$i]; } $conn = mysql_connect($this->mysql_host,$this->mysql_user,$this->mysql_pass); $rs = mysql_select_db($this->mysql_db,$conn); foreach($exchange_rate as $currency=>$rate) { if((is_numeric($rate)) && ($rate != 0)) { $sql = "SELECT * FROM ".$this->mysql_table." WHERE currency='".$currency."'"; $rs = mysql_query($sql,$conn) or die(mysql_error()); if(mysql_num_rows($rs) > 0) { $sql = "UPDATE ".$this->mysql_table." SET rate=".$rate." WHERE currency='".$currency."'"; } else { $sql = "INSERT INTO ".$this->mysql_table." VALUES('".$currency."',".$rate.")"; } $rs = mysql_query($sql,$conn) or die(mysql_error()); } } } } /* Create the currency exchange table */ function createTable() { $conn = mysql_connect($this->mysql_host,$this->mysql_user,$this->mysql_pass); $rs = mysql_select_db($this->mysql_db,$conn); $sql = "CREATE TABLE ".$this->mysql_table." ( currency char(3) NOT NULL default '', rate float NOT NULL default '0', PRIMARY KEY(currency) ) ENGINE=MyISAM"; $rs = mysql_query($sql,$conn) or die(mysql_error()); $sql = "INSERT INTO ".$this->mysql_table." VALUES('EUR',1)"; $rs = mysql_query($sql,$conn) or die(mysql_error()); $this->downloadExchangeRates(); } } ?> |
Copy the above code into a new file and save it as CurrencyConverter.php. Whenever you need to make a conversion just include the class file and call the ‘convert’ function. You will need to enter your own mysql database variables such as the login details. The example below will convert £2.50 GBP into US Dollars ($).
代码如下 | 复制代码 |
<?php |
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function tranTime($time) { $rtime = date("m-d H:i",$time); $htime = date("H:i",$time); $time = time() - $time; if ($time < 60) { $str = '刚刚'; } elseif ($time < 60 * 60) { $min = floor($time/60); $str = $min.'分钟前'; } elseif ($time < 60 * 60 * 24) { $h = floor($time/(60*60)); $str = $h.'小时前 '.$htime; } elseif ($time < 60 * 60 * 24 * 3) { $d = floor($time/(60*60*24)); if($d==1) $str = '昨天 '.$rtime; else $str = '前天 '.$rtime; } else { $str = $rtime; } return $str; } |
函数tranTime()中的参数$time必须为Unix时间戳,如果不是请先用strtotime()将其转换成Unix时间戳
调用
代码如下 | 复制代码 |
$times="1286861696 "; |
Randomly generated password: m1ztpxw8
代码如下 | 复制代码 |
<?php function genPwd($length=6) { $password = ''; $possible = '23456789bcdfghjkmnpqrstvwxyz'; $i = 0; while ($i < $length) { $password .= substr($possible, mt_rand(0, strlen($possible)-1), 1); $i++; } return $password; } ?> |
测试方法
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<?php |
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<html> |
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<?php |
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<?php |
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<?php |
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/** +---------------------------------------------------------- * 字符串截取,支持中文和其它编码 +---------------------------------------------------------- * @param string $str 需要转换的字符串 * @param string $start 开始位置 * @param string $length 截取长度 * @param string $charset 编码格式 * @param string $suffix 截断显示字符 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true) { if(function_exists("mb_substr")) $slice = mb_substr($str, $start, $length, $charset); elseif(function_exists('iconv_substr')) { $slice = iconv_substr($str,$start,$length,$charset); }else{ $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/"; $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/"; $re['gbk'] = "/[x01-x7f]|[x81-xfe][x40-xfe]/"; $re['big5'] = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/"; preg_match_all($re[$charset], $str, $match); $slice = join("",array_slice($match[0], $start, $length)); } if($suffix && $str != $slice) return $slice."..."; return $slice; } /** +---------------------------------------------------------- * 字符串截取,支持中文和其它编码 +---------------------------------------------------------- * @param string $str 需要转换的字符串 * @param string $length 截取长度 * @param string $charset 编码格式 * @param string $suffix 截断显示字符 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ function mStr($str, $length, $charset="utf-8", $suffix=true){ return msubstr($str, 0, $length, $charset, $suffix); } |
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