開捕致命錯誤：類stdClass的的對象不能轉換爲字符串一個PHP文件

Question

我得到這個錯誤有時，

開捕致命錯誤：類stdClass的的對象不能轉換爲字符串在/ home /名爲myUsername上線145

/public_html/wp-content/plugins/wp-online-store/autocurupdate/currencyexchange_class.php這是currencyexchange_class.php

<?php 
/* 

File: currencyexchange.php 
Author: Gary White 
Last modified: July 6, 2005 

Copyright (C) 2005, Gary White 

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 
included GNU General Public License for more details. If you 
received this file without the gpl.txt file, you may view it at: 
http://www.gnu.org/copyleft/gpl.html 

See the readme.txt file for usage. 

July 6, 2005 added the RON, Romania New Leu, to the currency list. 

*/ 

// this simply gets an array of possible currency countries and names 
$allCurrencies=getCurrencyNames(); 
class currencyExchange{ 
    ///////////////////////////////////////////////////////////////////////////////////////// 
    // Public Properties 
    // Note that these properties are public, but the values are all generated internally. 
    // You should consider them read only during normal usage. 
    // The only one you may want to access would be the $localFile property, if you wanted 
    // to change the name of the local file used to cache a copy of the data. 
    ///////////////////////////////////////////////////////////////////////////////////////// 

    // $Supplier property will be the European Central Bank, assuming we get the data 
    var $Supplier=""; 
    // $Date property is the date of the exchange rate publication 
    var $Date=""; 
    // $Rates property is an associative array of rateobj objects with the three letter identifier as the array keys 
    var $Rates=array(); 
    // $Source property will be either "Local" or "Remote" depending on where the data comes from 
    var $Source=""; 
    // $Error property will contain any error messages generates along the way 
    var $Error=""; 
    // $localFile property is the file name used to cache a local copy of the XML file 
    var $localFile="currencies_local.xml"; 
    // $url property is the URL of the XML file at the European Central Bank 
    var $url="http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml"; 

    ///////////////////////////////////////////////////////////////////////////////////////// 
    // Public Methods 
    ///////////////////////////////////////////////////////////////////////////////////////// 
    function getData(){ 
     $olderr=error_reporting(0); 
     $this->Source="Local"; 
     if(file_exists($this->localFile)){ 
      // load it 
      $this->xml=@file_get_contents($this->localFile); 
      $this->parse(); 

      // check if it's a weekend 
      // what day of the week is it? 
      $weekday=date("w"); 
      // if it's a Sunday or Saturday 
      if($weekday==0 || $weekday==6){ 
       // go back to last Friday 
       $date=date("Y-m-d",strtotime("last Friday")); 
      } else { 
       $date=date("Y-m-d"); 
      } 
      // if the date in the local file is not the same 
      // as our current date, or last Friday for weekends 
      if($this->Date!=$date){ 

       // clear the data 
       $this->clearData(); 

       // get the remote file 
       $this->xml=$this->getRemoteFile($this->url); 

       if($this->parse()){ 
        $this->Source="Remote"; 
        // write the remote file data to a local copy of the file 
        $this->saveLocalCopy(); 
       } 
      } // if we have a local copy 
     }else{ 
      $this->xml=$this->getRemoteFile($this->url); 

      if($this->xml) 
       // write the remote file data to a local copy of the file 
       $this->saveLocalCopy(); 
     } 
     if(!$this->xml) 
      $this->error="Failed to get data"; 
     else{ 
      $this->parse(); 
     } 
     // sort our rates on the keys 
     ksort($this->Rates); 
     error_reporting($olderr); 
     return count($this->Rates); 
    } 

    function getRemoteFile($url){ 

     $curl_handle = curl_init(); 
     // Where should we get the data? 
     curl_setopt ($curl_handle, CURLOPT_URL, $url); 
     // This says not to dump it directly to the output stream, but instead 
     // have it return as a string. 
     curl_setopt ($curl_handle, CURLOPT_RETURNTRANSFER, 1); 
     // the following is optional, but you should consider setting it 
     // anyway. It prevents your page from hanging if the remote site is 
     // down. 
     curl_setopt ($curl_handle, CURLOPT_CONNECTTIMEOUT, 1); 
     // Now, YOU make the call. 
     $buffer = curl_exec($curl_handle); 
     // And tell it to shut down (when your done. You can always make more 
     // calls if you want.) 
     curl_close($curl_handle); 
     // This is where i�d probably do some extra checks on what i just got. 
     // Paranoia pays dividends. 

     return $buffer; 
    } 

    function Convert($from, $to, $amount=1){ 
     // Converts from one currency to another. The method expects at least two 
     // parameters. The first param , $from, it the three letter identifier for 
     // the currency you are converting from. The second param, $to, is the 
     // three letter identifier for the currency you are converting to. The final 
     // param, $amount, is the amount of the $from currency to convert. If omitted 
     // the amount defaults to 1 and the function will return the amount of $to 
     // currency that corresponds with 1 unit of the $from currency. 
     if(array_key_exists($from, $this->Rates) && array_key_exists($to, $this->Rates)){ 
      return ($amount * (($this->Rates[$to]->rate)/($this->Rates[$from]->rate))); 
     }else{ 
      $this->Error->Error = ""; 
      if (!array_key_exists($from, $this->Rates)) 
       $this->Error.="$from is not a recognized currency identifier "; 
      if (!array_key_exists($from, $this->Rates)) 
       $this->Error.="$to is not a recognized currency identifier"; 
      return false; 
     } 
    } 

    function setBaseCurrency($currency){ 
     // This function converts all currencies to be based on one unit of 
     // $base currency. It's only really useful if you want to output a 
     // table of conversion factors. 

     // get a factor to do our conversion based on our base currency 
     $factor=$this->Rates[$currency]->rate; 
     // modify the rates based on the base currency 
     foreach(array_keys($this->Rates) as $k){ 
      $rate=$this->Rates[$k]->rate/$factor; 
      $this->Rates[$k]->rate=$rate; 
     } 
     return (count($this->Rates)>0); 
    } 

    ///////////////////////////////////////////////////////////////////////////////////////// 
    // Private Methods 
    // You should not need to call any of the following methods. 
    ///////////////////////////////////////////////////////////////////////////////////////// 
    function clearData(){ 
     $this->Supplier=""; 
     $this->Date=""; 
     $this->Rates=array(); 
     $this->Source=""; 
     $this->xml=""; 
    } 

    function saveLocalCopy(){ 
     $fp=fopen($_SERVER['DOCUMENT_ROOT'].$this->localFile,"w") or die("failed to write file"); 
     fwrite($fp,$this->xml); 
     fclose($fp); 
     $this->parse(); 
     $this->Source="Remote"; 
    } 

    function parse(){ 
     if($this->xml){ 
      $this->parser = xml_parser_create(); 
      @xml_set_object($this->parser, $this); 
      @xml_set_element_handler($this->parser, "startElement", "endElement"); 
      @xml_set_character_data_handler($this->parser, "characterData"); 
      $this->Rates['EUR']=new rateobj(); 
      $this->Rates['EUR']->rate=1.00; 
      $this->Rates['EUR']->currency="Euro"; 
      xml_parse($this->parser, $this->xml, true) 
       or die(sprintf("XML error: %s at line %d", 
        xml_error_string(xml_get_error_code($parser)), 
        xml_get_current_line_number($parser))); 
      xml_parser_free($this->parser); 
     } 
    } 

    function currencyExchange(){ 
     $dir=pathinfo($_SERVER['PHP_SELF']); 
     $dir=$dir['dirname']; 
     $this->localFile="$dir/$this->localFile"; 
    } 

    function startElement($parser, $name, $attrs) { 
     global $allCurrencies; 
     $this->temp=""; 
     $gwCurrencyExch=&$GLOBALS['gwCurrencyExch']; 
     if($name=="CUBE"){ 
      if(array_key_exists("TIME",$attrs)){ 
       $this->Date=$attrs["TIME"]; 
      } 
      if(array_key_exists("CURRENCY",$attrs)){ 
       $this->Rates[$attrs["CURRENCY"]]=new rateobj(); 
       $this->Rates[$attrs["CURRENCY"]]->rate=$attrs["RATE"]; 
       $this->Rates[$attrs["CURRENCY"]]->currency=$allCurrencies[$attrs["CURRENCY"]]; 
      } 
     } 
    } 

    function characterData($parser, $data){ 
     $this->temp.=$data; 
    } 

    function endElement($parser, $name) { 
     switch($name){ 
      case "GESMES:NAME": 
       $this->Supplier=$this->temp; 
       break; 
      case "GESMES:SUBJECT": 
       $this->Report=$this->temp; 
       break; 
     } 
     $temp=""; 
    } 

} // end of ratelist class 

class gwSocket{ 
    var $ClassName="gwSocket"; 
    var $Version="0.6"; 

    var $error=""; 
    var $headers; 
    var $maxRedirects=3; 
    var $page=""; 
    var $result=""; 
    var $redirects=0; 
    var $userAgent="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"; 

    function getUrl($url) { 
     $retVal=""; 
     $url_parsed = parse_url($url); 
     $scheme = $url_parsed["scheme"]; 
     $host = $url_parsed["host"]; 
     $port = $url_parsed["port"]?$url_parsed["port"]:"80"; 
     $user = $url_parsed["user"]; 
     $pass = $url_parsed["pass"]; 
     $path = $url_parsed["path"]?$url_parsed["path"]:"/"; 
     $query = $url_parsed["query"]; 
     $anchor = $url_parsed["fragment"]; 

     if (!empty($host)){ 

      // attempt to open the socket 
      if($fp = fsockopen($host, $port, $errno, $errstr, 2)){ 

       $path .= $query?"?$query":""; 
       $path .= $anchor?"$anchor":""; 

       // this is the request we send to the host 
       $out = "GET $path ". 
        "HTTP/1.0\r\n". 
        "Host: $host\r\n". 
        "Connection: Close\r\n". 
        "User-Agent: $this->userAgent\r\n"; 
       if($user) 
        $out .= "Authorization: Basic ". 
         base64_encode("$user:$pass")."\r\n"; 
       $out .= "\r\n"; 

       fputs($fp, $out); 
       while (!feof($fp)) { 
        $retVal.=fgets($fp, 128); 
       } 
       fclose($fp); 
      } else { 
       $this->error=$errstr; 
      } 
      $this->result=$retVal; 
      $this->headers=$this->parseHeaders(trim(substr($retVal,0,strpos($retVal,"\r\n\r\n")))); 
      $this->page=trim(stristr($retVal,"\r\n\r\n"))."\n"; 
      if(isset($this->headers['Location'])){ 
       $this->redirects++; 
       if($this->redirects<$this->maxRedirects){ 
        $location=$this->headers['Location']; 
        $this->headers=array(); 
        $this->result=""; 
        $this->page=""; 
        $this->getUrl($location); 
       } 
      } 
     } 
     return (!$retVal=""); 
    } 

    function parseHeaders($s){ 
     $h=preg_split("/[\r\n]/",$s); 
     foreach($h as $i){ 
      $i=trim($i); 
      if(strstr($i,":")){ 
       list($k,$v)=explode(":",$i); 
       $hdr[$k]=substr(stristr($i,":"),2); 
      }else{ 
       if(strlen($i)>3) 
        $hdr[]=$i; 
      } 
     } 
     if(isset($hdr[0])){ 
      $hdr['Status']=$hdr[0]; 
      unset($hdr[0]); 
     } 
     return $hdr; 
    } 

} // end of gwSocket class 

class rateobj{ 
    var $currency=""; 
    var $rate=0; 
} 

function getCurrencyNames(){ 
    $retVal['AED']="United Arab Emirates Dirham"; 
    $retVal['AFA']="Afghanistan Afghani"; 
    $retVal['ALL']="Albania Leke"; 
    $retVal['ARS']="Argentina Peso"; 
    $retVal['ATS']="Austria Schilling*"; 
    $retVal['AUD']="Australia Dollar"; 
    $retVal['BBD']="Barbados Dollar"; 
    $retVal['BDT']="Bangladesh Taka"; 
    $retVal['BEF']="Belgium Franc*"; 
    $retVal['BGN']="Bulgaria Leva"; 
    $retVal['BHD']="Bahrain Dinar"; 
    $retVal['BMD']="Bermuda Dollar"; 
    $retVal['BRL']="Brazil Reai"; 
    $retVal['BSD']="Bahamas Dollar"; 
    $retVal['CAD']="Canada Dollar"; 
    $retVal['CHF']="Switzerland Franc"; 
    $retVal['CLP']="Chile Peso"; 
    $retVal['CNY']="China Yuan Renminbi"; 
    $retVal['COP']="Colombia Peso"; 
    $retVal['CRC']="Costa Rica Colone"; 
    $retVal['CYP']="Cyprus Pound"; 
    $retVal['CZK']="Czech Republic Koruny"; 
    $retVal['DEM']="Germany Deutsche Mark*"; 
    $retVal['DKK']="Denmark Kroner"; 
    $retVal['DOP']="Dominican Republic Peso"; 
    $retVal['DZD']="Algeria Dinar"; 
    $retVal['EEK']="Estonia Krooni"; 
    $retVal['EGP']="Egypt Pound"; 
    $retVal['ESP']="Spain Peseta*"; 
    $retVal['EUR']="Euro"; 
    $retVal['FIM']="Finland Markkaa*"; 
    $retVal['FJD']="Fiji Dollar"; 
    $retVal['FRF']="France Franc*"; 
    $retVal['GBP']="United Kingdom Pound"; 
    $retVal['GRD']="Greece Drachmae*"; 
    $retVal['HKD']="Hong Kong Dollar"; 
    $retVal['HRK']="Croatia Kuna"; 
    $retVal['HUF']="Hungary Forint"; 
    $retVal['IDR']="Indonesia Rupiahs"; 
    $retVal['IEP']="Ireland Pounds*"; 
    $retVal['ILS']="Israel New Shekel"; 
    $retVal['INR']="India Rupee"; 
    $retVal['IQD']="Iraq Dinar"; 
    $retVal['IRR']="Iran Rial"; 
    $retVal['ISK']="Iceland Kronur"; 
    $retVal['ITL']="Italy Lire*"; 
    $retVal['JMD']="Jamaica Dollar"; 
    $retVal['JOD']="Jordan Dinar"; 
    $retVal['JPY']="Japan Yen"; 
    $retVal['KES']="Kenya Shilling"; 
    $retVal['KRW']="South Korea Won"; 
    $retVal['KWD']="Kuwait Dinar"; 
    $retVal['LBP']="Lebanon Pound"; 
    $retVal['LKR']="Sri Lanka Rupee"; 
    $retVal['LTL']="Lithuanian Lita"; 
    $retVal['LVL']="Latvian Lat"; 
    $retVal['LUF']="Luxembourg Franc*"; 
    $retVal['MAD']="Morocco Dirham"; 
    $retVal['MTL']="Malta Liri"; 
    $retVal['MUR']="Mauritius Rupee"; 
    $retVal['MXN']="Mexico Peso"; 
    $retVal['MYR']="Malaysia Ringgit"; 
    $retVal['NLG']="Dutch (Netherlands) Guilder*"; 
    $retVal['NOK']="Norway Kroner"; 
    $retVal['NZD']="New Zealand Dollar"; 
    $retVal['OMR']="Oman Rial"; 
    $retVal['PEN']="Peru Nuevos Sole"; 
    $retVal['PHP']="Philippines Peso"; 
    $retVal['PKR']="Pakistan Rupee"; 
    $retVal['PLN']="Poland Zlotych"; 
    $retVal['PTE']="Portugal Escudo*"; 
    $retVal['QAR']="Qatar Riyal"; 
    $retVal['ROL']="Romania Lei"; 
    $retVal['RON']="Romania New Leu"; 
    $retVal['RUB']="Russia Ruble"; 
    $retVal['SAR']="Saudi Arabia Riyal"; 
    $retVal['SDD']="Sudan Dinar"; 
    $retVal['SEK']="Sweden Kronor"; 
    $retVal['SGD']="Singapore Dollar"; 
    $retVal['SIT']="Slovenia Tolar"; 
    $retVal['SKK']="Slovakia Koruny"; 
    $retVal['THB']="Thailand Baht"; 
    $retVal['TND']="Tunisia Dinar"; 
    $retVal['TRL']="Turkey Lira*"; 
    $retVal['TRY']="Turkey New Lira"; 
    $retVal['TTD']="Trinidad and Tobago Dollar"; 
    $retVal['TWD']="Taiwan New Dollar"; 
    $retVal['USD']="United States Dollar"; 
    $retVal['VEB']="Venezuela Bolivare"; 
    $retVal['VND']="Vietnam Dong"; 
    $retVal['XAF']="CFA BEAC Franc"; 
    $retVal['XAG']="Silver Ounce"; 
    $retVal['XAU']="Gold Ounce"; 
    $retVal['XCD']="Eastern Caribbean Dollar"; 
    $retVal['XDR']="IMF Special Drawing Right"; 
    $retVal['XOF']="CFA BCEAO Franc"; 
    $retVal['XPD']="Palladium Ounce"; 
    $retVal['XPF']="CFP Franc"; 
    $retVal['XPT']="Platinum Ounce"; 
    $retVal['ZAR']="South Africa Rand"; 
    $retVal['ZMK']="Zambia Kwacha"; 
    return $retVal; 
} 
?> 

的來源是有一個修復這個？我找不到解決方案。謝謝。

Answer 1

替換這個（始於144）

if (!array_key_exists($from, $this->Rates)) 
     $this->Error.="$from is not a recognized currency identifier "; 
if (!array_key_exists($from, $this->Rates)) 
     $this->Error.="$to is not a recognized currency identifier"; 

與此

if (!array_key_exists($from, $this->Rates)) 
     $this->Error->Error.="$from is not a recognized currency identifier "; 
if (!array_key_exists($from, $this->Rates)) 
     $this->Error->Error.="$to is not a recognized currency identifier"; 

我不知道，但它可能是因爲這條線在143的解決方案：

$this->Error->Error = ""; 

或者你應該做相反的事情，就像修好143行並刪除第二個「 - > Error」。

$this->Error = "";