user34882: I use bitcoind. And I have simple bitcoin wallet with simple login-register system.
Error Code;
Fatal error: Uncaught exception 'Exception' with message 'Incorrect response id (request id: 1, response id: )' in /var/www/ponzi/htdocs/wallet/includes/jsonRPCClient.php:146 Stack trace: #0 /var/www/ponzi/htdocs/wallet/account.php(38): jsonRPCClient->__call('getaccountaddre...', Array) #1 /var/www/ponzi/htdocs/wallet/account.php(38): jsonRPCClient->getaccountaddress('kaka') #2 {main} thrown in /var/www/ponzi/htdocs/wallet/includes/jsonRPCClient.php on line 146

Account Page;
<?php include("includes/auth.php"); //include auth.php file on all secure pages ?>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
        <title>MyCoinWallet - Account</title>
        <link rel="stylesheet" href="css/styles.css"  type="text/css" />
    </head>
    <body>
        <div id="main">
            <div id="top"><div style='float:left;position:relative;top:25px;'><h2>MyCoinWallet</h2></div><div class="logomargin"><img src='images/logo-mockup2.png' /></div></div>
            <div id="wrapper">
                <div id="content">
                    <div class="innermargin">
                        <h1>MyCoinWallet Account</h1>
                        <br />
                        <form>
                            <br>
                            <p>Welcome <?php echo $_SESSION['username']; ?>!</p><br><br>

                            <?php
                            require_once('includes/db.php');
                            require_once('includes/config.php');
                            require_once('includes/jsonRPCClient.php');
                            require_once('includes/bcfunctions.php');

                            $bitcoin = new jsonRPCClient('http://MYUSER:MYPASS@localhost:8332');

                            $kadi = $_SESSION['username'];


                            // check for session address
                            if(isset($_SESSION['sendaddress'])) {
                                $sendaddress = refreshAddressIfStale($bitcoin,$_SESSION['sendaddress']); // session exists, check if its been used before
                                $_SESSION['sendaddress'] = $sendaddress;
                            } else {
                                // if address already exists in wallet (or new unfortunately), check the balance and set as main receivable address if zero
                                $curaddress = $bitcoin->getaccountaddress($kadi);
                                $sendaddress = refreshAddressIfStale($bitcoin,$curaddress);
                                $_SESSION['sendaddress'] = $sendaddress;
                            }

                            // save current balance
                            saveCurrentBalance($bitcoin, $_SESSION['sendaddress']);

                            $userBalance = $_SESSION['userbalance'];
                            $singleconfirmBalance = number_format($bitcoin->getbalance($_SESSION['username'], 0),8); // set to zero, this is near instant, set to one one on the side of caution
                            if($singleconfirmBalance > 0) {     // user has unconfirmed transactions
                                $unconfirmedBalance = $singleconfirmBalance - $userBalance;
                            }
                            echo "Current Balance: ". $userBalance ."<br />";
                            if((isset($unconfirmedBalance)) && ($unconfirmedBalance > 0)) {
                                echo "Unconfirmed Balance: ". $unconfirmedBalance ."<br />";
                            }

                            echo "<h2>Recent Transactions:</h2><table>";
                            $transactions = $bitcoin->listtransactions($_SESSION['username']);
                            foreach($transactions as $trans) {
                                if(isset($trans['account'])) {
                                    $transacct = $trans['account'];
                                } else {
                                    $transacct = '';
                                }
                                if(isset($trans['address'])) {
                                    $transaddress = $trans['address'];
                                } else {
                                    $transaddress = '';
                                }
                                if(isset($trans['category'])) {
                                    $transcategory = $trans['category'];
                                } else {
                                    $transcategory = '';
                                }
                                if(isset($trans['amount'])) {
                                    $transamount = $trans['amount'];
                                } else {
                                    $transamount = '';
                                }
                                if(isset($trans['confirmations'])) {
                                    $transconfirmations = $trans['confirmations'];
                                } else {
                                    $transconfirmations = '';
                                }
                                if(isset($trans['blockhash'])) {
                                    $transblockhash = $trans['blockhash'];
                                } else {
                                    $transblockhash = '';
                                }
                                if(isset($trans['blockindex'])) {
                                    $transblockindex = $trans['blockindex'];
                                } else {
                                    $transblockindex = '';
                                }
                                if(isset($trans['blocktime'])) {
                                    $transblocktime = $trans['blocktime'];
                                } else {
                                    $transblocktime = '';
                                }
                                if(isset($trans['txid'])) {
                                    $transtxid = $trans['txid'];
                                } else {
                                    $transtxid = '';
                                }
                                if(isset($trans['time'])) {
                                    $transtime = $trans['time'];
                                } else {
                                    $transtime = '';
                                }
                                if(isset($trans['timereceived'])) {
                                    $transtimereceived = $trans['timereceived'];
                                } else {
                                    $transtimereceived = '';
                                }
                                /*
                                $transaddress = $trans['address'];
                                $transcategory = $trans['category'];
                                $transamount = $trans['amount'];
                                $transconfirmations = $trans['confirmations'];
                                $transblockhash = $trans['blockhash'];
                                $transblockindex = $trans['blockindex'];
                                $transblocktime = $trans['blocktime'];
                                $transtxid = $trans['txid'];
                                $transtime = $trans['time'];
                                $transtimereceived = $trans['timereceived'];
                                */

                                echo "<tr><td>Address:</td><td>". $transaddress ."</td></tr>";
                                echo "<tr><td>Amount:</td><td>". number_format($transamount, 8) ."</td></tr>";
                                echo "<tr><td>Category:</td><td>". $transcategory ."</td></tr>";
                                echo "<tr><td>Confirmations:</td><td>". $transconfirmations ."</td></tr>";
                                echo "<tr><td>Blockhash:</td><td>". $transblockhash ."</td></tr>";
                                echo "<tr><td>txid:</td><td>". $transtxid ."</td></tr>";
                                echo "<tr><td>Time:</td><td>". date("Y - M - d H:i:s", $transtime) ."</td></tr>";
                                echo "<tr><td>&nbsp;</td></tr>";
                            }
                            ?>
                        </table></form>
                    </div>
                </div>
            </div>
            <div id="menu">
                <div class="menumargin">
                    <a href='index.php'>Home</a>
                    <a href='account.php'>Account</a>
                    <a href='deposit.php'>Deposit</a>
                    <a href='withdraw.php'>Withdraw</a>
                    <a href='contact.php'>Contact</a>
                    <a href='#'>Logout</a>
                </div>
            </div>
            <div id="footer"><a href="index.php">Home</a> | <a href="account.php">Account</a> | <a href="deposit.php">Deposit</a> | <a href="withdraw.php">Withdraw</a> | <a href="contact.php">Contact</a> | <a href="#">Logout</a> | </div>
        </div>
    </body>
</html>

jsonRPCClient.php;
    <?php
/*
                    COPYRIGHT

Copyright 2007 Sergio Vaccaro <sergio@inservibile.org>

This file is part of JSON-RPC PHP.

JSON-RPC PHP 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.

JSON-RPC PHP 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.

You should have received a copy of the GNU General Public License
along with JSON-RPC PHP; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/**
 * The object of this class are generic jsonRPC 1.0 clients
 * http://json-rpc.org/wiki/specification
 *
 * @author sergio <jsonrpcphp@inservibile.org>
 */

 /* converted old fopen method to curl and added ability to use ssl - Galen */

class jsonRPCClient {  
    /**
     * Debug state
     *
     * @var boolean
     */
    private $debug;

    /**
     * The server URL
     *
     * @var string
     */
    private $url;
    /**
     * The request id
     *
     * @var integer
     */
    private $id;
    /**
     * If true, notifications are performed instead of requests
     *
     * @var boolean
     */
    private $notification = false;

    /**
     * Takes the connection parameters
     *
     * @param string $url
     * @param boolean $debug
     */
    public function __construct($url,$debug = false) {
        // server URL
        $this->url = $url;
        // proxy
        empty($proxy) ? $this->proxy = '' : $this->proxy = $proxy;
        // debug state
        empty($debug) ? $this->debug = false : $this->debug = true;
        // message id
        $this->id = 1;
    }

    /**
     * Sets the notification state of the object. In this state, notifications are performed, instead of requests.
     *
     * @param boolean $notification
     */
    public function setRPCNotification($notification) {
        empty($notification) ?
        $this->notification = false
        :
        $this->notification = true;
    }

    /**
     * Performs a jsonRCP request and gets the results as an array
     *
     * @param string $method
     * @param array $params
     * @return array
     */
        public function __call($method,$params) {
        // check
        if (!is_scalar($method)) {
            throw new Exception('Method name has no scalar value');
        }

        // check
        if (is_array($params)) {
            // no keys
            $params = array_values($params);
        } else {
            throw new Exception('Params must be given as array');
        }

        // sets notification or request task
        if ($this->notification) {
            $currentId = NULL;
        } else {
            $currentId = $this->id;
        }

        // prepares the request
        $request = array(
            'method' => $method,
            'params' => $params,
            'id' => $currentId
        );
        $request = json_encode($request);
        $this->debug && $this->debug='***** Request *****'."\n".$request."\n".'***** End Of request *****'."\n\n";

        // performs the HTTP POST
        $ch = curl_init($this->url);
        // curl ssl options
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/json'));
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
        $response = json_decode(curl_exec($ch),true);
        curl_close($ch);
        // debug output
        if ($this->debug) {
            echo nl2br($this->debug);
        }

        // final checks and return
        if (!$this->notification) {
            // check
            if ($response['id'] != $currentId) {
                throw new Exception('Incorrect response id (request id: '.$currentId.', response id: '.$response['id'].')');
            }
            if (!is_null($response['error'])) {
                throw new Exception('Request error: '.$response['error']);
            }
            return $response['result'];
        } else {
            return true;
        }
    }
}
?>

Please help me!!

user26873: The jsonRPC client does not handle errors from bitcoind well. source
Instead it is recommended to use the easybitcoin php library, available on github here. It's usage is simple and it outputs 404 and 500 errors properly. 
require("easybitcoin.php");
$bitcoin = new Bitcoin("someusername", "somepassword");

$txid = $_GET["tx"];
$txinfo = $bitcoin->gettransaction($txid);
$amount = $txinfo["amount"]; 
echo $amount ? $amount : $bitcoin->error;


34882: <p>I use bitcoind. And I have simple bitcoin wallet with simple login-register system.</p>

<p>Error Code;</p>

<pre><code>Fatal error: Uncaught exception 'Exception' with message 'Incorrect response id (request id: 1, response id: )' in /var/www/ponzi/htdocs/wallet/includes/jsonRPCClient.php:146 Stack trace: #0 /var/www/ponzi/htdocs/wallet/account.php(38): jsonRPCClient-&gt;__call('getaccountaddre...', Array) #1 /var/www/ponzi/htdocs/wallet/account.php(38): jsonRPCClient-&gt;getaccountaddress('kaka') #2 {main} thrown in /var/www/ponzi/htdocs/wallet/includes/jsonRPCClient.php on line 146
</code></pre>

<p>Account Page;</p>

<pre><code>&lt;?php include("includes/auth.php"); //include auth.php file on all secure pages ?&gt;
&lt;html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"&gt;
    &lt;head&gt;
        &lt;meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /&gt;
        &lt;title&gt;MyCoinWallet - Account&lt;/title&gt;
        &lt;link rel="stylesheet" href="css/styles.css"  type="text/css" /&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;div id="main"&gt;
            &lt;div id="top"&gt;&lt;div style='float:left;position:relative;top:25px;'&gt;&lt;h2&gt;MyCoinWallet&lt;/h2&gt;&lt;/div&gt;&lt;div class="logomargin"&gt;&lt;img src='images/logo-mockup2.png' /&gt;&lt;/div&gt;&lt;/div&gt;
            &lt;div id="wrapper"&gt;
                &lt;div id="content"&gt;
                    &lt;div class="innermargin"&gt;
                        &lt;h1&gt;MyCoinWallet Account&lt;/h1&gt;
                        &lt;br /&gt;
                        &lt;form&gt;
                            &lt;br&gt;
                            &lt;p&gt;Welcome &lt;?php echo $_SESSION['username']; ?&gt;!&lt;/p&gt;&lt;br&gt;&lt;br&gt;

                            &lt;?php
                            require_once('includes/db.php');
                            require_once('includes/config.php');
                            require_once('includes/jsonRPCClient.php');
                            require_once('includes/bcfunctions.php');

                            $bitcoin = new jsonRPCClient('http://MYUSER:MYPASS@localhost:8332');

                            $kadi = $_SESSION['username'];


                            // check for session address
                            if(isset($_SESSION['sendaddress'])) {
                                $sendaddress = refreshAddressIfStale($bitcoin,$_SESSION['sendaddress']); // session exists, check if its been used before
                                $_SESSION['sendaddress'] = $sendaddress;
                            } else {
                                // if address already exists in wallet (or new unfortunately), check the balance and set as main receivable address if zero
                                $curaddress = $bitcoin-&gt;getaccountaddress($kadi);
                                $sendaddress = refreshAddressIfStale($bitcoin,$curaddress);
                                $_SESSION['sendaddress'] = $sendaddress;
                            }

                            // save current balance
                            saveCurrentBalance($bitcoin, $_SESSION['sendaddress']);

                            $userBalance = $_SESSION['userbalance'];
                            $singleconfirmBalance = number_format($bitcoin-&gt;getbalance($_SESSION['username'], 0),8); // set to zero, this is near instant, set to one one on the side of caution
                            if($singleconfirmBalance &gt; 0) {     // user has unconfirmed transactions
                                $unconfirmedBalance = $singleconfirmBalance - $userBalance;
                            }
                            echo "Current Balance: ". $userBalance ."&lt;br /&gt;";
                            if((isset($unconfirmedBalance)) &amp;&amp; ($unconfirmedBalance &gt; 0)) {
                                echo "Unconfirmed Balance: ". $unconfirmedBalance ."&lt;br /&gt;";
                            }

                            echo "&lt;h2&gt;Recent Transactions:&lt;/h2&gt;&lt;table&gt;";
                            $transactions = $bitcoin-&gt;listtransactions($_SESSION['username']);
                            foreach($transactions as $trans) {
                                if(isset($trans['account'])) {
                                    $transacct = $trans['account'];
                                } else {
                                    $transacct = '';
                                }
                                if(isset($trans['address'])) {
                                    $transaddress = $trans['address'];
                                } else {
                                    $transaddress = '';
                                }
                                if(isset($trans['category'])) {
                                    $transcategory = $trans['category'];
                                } else {
                                    $transcategory = '';
                                }
                                if(isset($trans['amount'])) {
                                    $transamount = $trans['amount'];
                                } else {
                                    $transamount = '';
                                }
                                if(isset($trans['confirmations'])) {
                                    $transconfirmations = $trans['confirmations'];
                                } else {
                                    $transconfirmations = '';
                                }
                                if(isset($trans['blockhash'])) {
                                    $transblockhash = $trans['blockhash'];
                                } else {
                                    $transblockhash = '';
                                }
                                if(isset($trans['blockindex'])) {
                                    $transblockindex = $trans['blockindex'];
                                } else {
                                    $transblockindex = '';
                                }
                                if(isset($trans['blocktime'])) {
                                    $transblocktime = $trans['blocktime'];
                                } else {
                                    $transblocktime = '';
                                }
                                if(isset($trans['txid'])) {
                                    $transtxid = $trans['txid'];
                                } else {
                                    $transtxid = '';
                                }
                                if(isset($trans['time'])) {
                                    $transtime = $trans['time'];
                                } else {
                                    $transtime = '';
                                }
                                if(isset($trans['timereceived'])) {
                                    $transtimereceived = $trans['timereceived'];
                                } else {
                                    $transtimereceived = '';
                                }
                                /*
                                $transaddress = $trans['address'];
                                $transcategory = $trans['category'];
                                $transamount = $trans['amount'];
                                $transconfirmations = $trans['confirmations'];
                                $transblockhash = $trans['blockhash'];
                                $transblockindex = $trans['blockindex'];
                                $transblocktime = $trans['blocktime'];
                                $transtxid = $trans['txid'];
                                $transtime = $trans['time'];
                                $transtimereceived = $trans['timereceived'];
                                */

                                echo "&lt;tr&gt;&lt;td&gt;Address:&lt;/td&gt;&lt;td&gt;". $transaddress ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;Amount:&lt;/td&gt;&lt;td&gt;". number_format($transamount, 8) ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;Category:&lt;/td&gt;&lt;td&gt;". $transcategory ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;Confirmations:&lt;/td&gt;&lt;td&gt;". $transconfirmations ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;Blockhash:&lt;/td&gt;&lt;td&gt;". $transblockhash ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;txid:&lt;/td&gt;&lt;td&gt;". $transtxid ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;Time:&lt;/td&gt;&lt;td&gt;". date("Y - M - d H:i:s", $transtime) ."&lt;/td&gt;&lt;/tr&gt;";
                                echo "&lt;tr&gt;&lt;td&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;";
                            }
                            ?&gt;
                        &lt;/table&gt;&lt;/form&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div id="menu"&gt;
                &lt;div class="menumargin"&gt;
                    &lt;a href='index.php'&gt;Home&lt;/a&gt;
                    &lt;a href='account.php'&gt;Account&lt;/a&gt;
                    &lt;a href='deposit.php'&gt;Deposit&lt;/a&gt;
                    &lt;a href='withdraw.php'&gt;Withdraw&lt;/a&gt;
                    &lt;a href='contact.php'&gt;Contact&lt;/a&gt;
                    &lt;a href='#'&gt;Logout&lt;/a&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div id="footer"&gt;&lt;a href="index.php"&gt;Home&lt;/a&gt; | &lt;a href="account.php"&gt;Account&lt;/a&gt; | &lt;a href="deposit.php"&gt;Deposit&lt;/a&gt; | &lt;a href="withdraw.php"&gt;Withdraw&lt;/a&gt; | &lt;a href="contact.php"&gt;Contact&lt;/a&gt; | &lt;a href="#"&gt;Logout&lt;/a&gt; | &lt;/div&gt;
        &lt;/div&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>jsonRPCClient.php;</p>

<pre><code>    &lt;?php
/*
                    COPYRIGHT

Copyright 2007 Sergio Vaccaro &lt;sergio@inservibile.org&gt;

This file is part of JSON-RPC PHP.

JSON-RPC PHP 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.

JSON-RPC PHP 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.

You should have received a copy of the GNU General Public License
along with JSON-RPC PHP; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/**
 * The object of this class are generic jsonRPC 1.0 clients
 * http://json-rpc.org/wiki/specification
 *
 * @author sergio &lt;jsonrpcphp@inservibile.org&gt;
 */

 /* converted old fopen method to curl and added ability to use ssl - Galen */

class jsonRPCClient {  
    /**
     * Debug state
     *
     * @var boolean
     */
    private $debug;

    /**
     * The server URL
     *
     * @var string
     */
    private $url;
    /**
     * The request id
     *
     * @var integer
     */
    private $id;
    /**
     * If true, notifications are performed instead of requests
     *
     * @var boolean
     */
    private $notification = false;

    /**
     * Takes the connection parameters
     *
     * @param string $url
     * @param boolean $debug
     */
    public function __construct($url,$debug = false) {
        // server URL
        $this-&gt;url = $url;
        // proxy
        empty($proxy) ? $this-&gt;proxy = '' : $this-&gt;proxy = $proxy;
        // debug state
        empty($debug) ? $this-&gt;debug = false : $this-&gt;debug = true;
        // message id
        $this-&gt;id = 1;
    }

    /**
     * Sets the notification state of the object. In this state, notifications are performed, instead of requests.
     *
     * @param boolean $notification
     */
    public function setRPCNotification($notification) {
        empty($notification) ?
        $this-&gt;notification = false
        :
        $this-&gt;notification = true;
    }

    /**
     * Performs a jsonRCP request and gets the results as an array
     *
     * @param string $method
     * @param array $params
     * @return array
     */
        public function __call($method,$params) {
        // check
        if (!is_scalar($method)) {
            throw new Exception('Method name has no scalar value');
        }

        // check
        if (is_array($params)) {
            // no keys
            $params = array_values($params);
        } else {
            throw new Exception('Params must be given as array');
        }

        // sets notification or request task
        if ($this-&gt;notification) {
            $currentId = NULL;
        } else {
            $currentId = $this-&gt;id;
        }

        // prepares the request
        $request = array(
            'method' =&gt; $method,
            'params' =&gt; $params,
            'id' =&gt; $currentId
        );
        $request = json_encode($request);
        $this-&gt;debug &amp;&amp; $this-&gt;debug='***** Request *****'."\n".$request."\n".'***** End Of request *****'."\n\n";

        // performs the HTTP POST
        $ch = curl_init($this-&gt;url);
        // curl ssl options
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/json'));
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
        $response = json_decode(curl_exec($ch),true);
        curl_close($ch);
        // debug output
        if ($this-&gt;debug) {
            echo nl2br($this-&gt;debug);
        }

        // final checks and return
        if (!$this-&gt;notification) {
            // check
            if ($response['id'] != $currentId) {
                throw new Exception('Incorrect response id (request id: '.$currentId.', response id: '.$response['id'].')');
            }
            if (!is_null($response['error'])) {
                throw new Exception('Request error: '.$response['error']);
            }
            return $response['result'];
        } else {
            return true;
        }
    }
}
?&gt;
</code></pre>

<p>Please help me!!</p>
 26873: <p>The jsonRPC client does not handle errors from bitcoind well. <a href="https://en.bitcoin.it/wiki/API_reference_(JSON-RPC)#PHP" rel="nofollow">source</a></p>

<p>Instead it is recommended to use the easybitcoin php library, available on github <a href="https://github.com/aceat64/EasyBitcoin-PHP" rel="nofollow">here</a>. It's usage is simple and it outputs 404 and 500 errors properly. </p>

<pre><code>require("easybitcoin.php");
$bitcoin = new Bitcoin("someusername", "somepassword");

$txid = $_GET["tx"];
$txinfo = $bitcoin-&gt;gettransaction($txid);
$amount = $txinfo["amount"]; 
echo $amount ? $amount : $bitcoin-&gt;error;
</code></pre>
