PHP Item::run方法代码示例

&load=image&size=small">
									</a>
								</div>
						<?php 
}
?>
					</div>
				</div>
			</div>
		</div>
	
		<div class="uk-width-small-4-5">
		<?php 
//Finds the latest item that has an image
$item_obj = new Item(array("action" => "get", "sort" => "adddate", "order" => "DESC"));
$item_array = $item_obj->run(true);
if (count($item_array) != 0) {
    $data_url = "";
    $count = 0;
    while (trim($item_array[$count]["image"]) == "") {
        if ($count + 1 > count($item_array) - 1) {
            break;
        } else {
            $count++;
        }
    }
    if (trim($item_array[$count]["image"]) != "") {
        $feat_item = $item_array[$count];
        ?>
			<div class="uk-width-1-1 uk-hidden-small">
				<div style="background:url('/imageviewer/?id=<?php 

	<div id="exchange_menu" class="menu">
		<div class="tip"></div>
		<h1>My Exchanges</h1>
		<div id="container">
			<?php 
if (count($exchange_array) == 0) {
    ?>
					<h6>You have no current exchanges</h6>
				<?php 
} else {
    foreach ($exchange_array as $exchange) {
        $item1_obj = new Item(array("action" => "get", "filter" => array("id" => $exchange["item1"])));
        $item1_info = $item1_obj->run(true);
        $item1_info = $item1_info[0];
        $item2_obj = new Item(array("action" => "get", "filter" => array("id" => $exchange["item2"])));
        $item2_info = $item2_obj->run(true);
        $item2_info = $item2_info[0];
        //Make sure item 1 is the item the current user owns
        if ($item2_info["usr"] == $_SESSION["userid"]) {
            $temp_array = $item1_info;
            $item1_info = $item2_info;
            $item2_info = $temp_array;
        }
        $exchange_status = "Waiting for you to review your partner";
        $exchange_status_icon = "uk-icon-check";
        ?>
					<div onclick="window.location='/exchange.php?offerid=<?php 
        echo $exchange["id"];
        ?>
'" class="exchange">
						<div class="content">

function print_header($ctrl)
{
    check_version();
    //Check to make sure the browser is supported
    /* * * MOBILE FORMATTING AND FAVICON * * */
    $additional = "";
    //Additional things we'll be adding to the header
    //If the device is mobile...
    if (is_mobile()) {
        //...use a mobile stylesheet
        $additional .= "<link rel=\"stylesheet\" type=\"text/css\" media=\"screen\" href=\"/scripts/css/mob/mobile.css\">";
    }
    //Changes favicon URL based on browser
    if (strpos(strtolower($_SERVER["HTTP_USER_AGENT"]), "safari")) {
        $additional .= "<link rel=\"SHORTCUT ICON\" href=\"/favicon.ico?v=2\" />";
    } else {
        $additional .= "<link rel=\"SHORTCUT ICON\" href=\"/favicon.ico\" />";
    }
    /* * * MAIN BANNER CONTENTS * * */
    $banner_contents = "";
    //If we aren't on the homepage..
    if (getcwd() !== $_SERVER["DOC_ROOT"]) {
        //Create a 'return home' or 'return to feed' button
        $text = "Return Home";
        //If we're logged in...
        if (isset($_SESSION["userid"])) {
            //...it'll be 'return to feed'
            $text = "Return to Feed";
        }
        //Add this to our banner
        $banner_contents .= "<div onclick=\"window.location='/';\" class=\"backbtn\">{$text}</div>";
    } else {
        //Make it the logo
        $banner_contents .= "<div id=\"logo\"><a href=\"/\"><img src=\"/img/logo.png\"></a></div>";
        //If we aren't logged in...
        if (!isset($_SESSION["userid"])) {
            //Display that text that shows how many members we have
            //Connect to MySQL
            $con = mysqli_connect(host(), username(), password(), mainDb());
            //Get the user count (not possible through API)
            $query = mysqli_query($con, "SELECT COUNT(*) AS count FROM `usr`");
            //Get the number of users
            $user_count = mysqli_fetch_array($query);
            $user_count = $user_count[0];
            $all_items = new Item(array("action" => "get"));
            $items_array = $all_items->run(true);
            $item_count = count($items_array);
            //...add it to the banner
            $banner_contents .= "<div id=\"subtxt\">Now with {$user_count} members worldwide.</div>";
            //Close the connection
            mysqli_close($con);
        }
    }
    $add_box = "";
    //If we are going to show the login/profile panel...
    if ($ctrl) {
        //If the user is logged in
        if (isset($_SESSION["userid"])) {
            //Print their control panel and search box
            $banner_contents .= get_search_box();
            $banner_contents .= get_profile_box($_SESSION["userid"]);
            //$add_box 		 .= get_add_box();
        } else {
            //Print the login box
            $banner_contents .= get_login_box();
        }
    }
    $user_menu = get_user_menu();
    /* * * MAIN HEADER * * */
    $header = <<<HEAD
\t\t\t\t\t<meta http-equiv="X-UA-Compatible" content="IE=edge" />
\t\t\t\t\t<meta name="viewport" content="width=device-width, initial-scale=1.0" />
\t\t\t\t\t<meta name="description" content="eDart is a first-of-its-kind, completely web-based, universal trading application for WPI students." /> 
\t\t\t\t\t<meta name="keywords" content="edart,beta,bartering,tradegrouper,trade,trading,tradby,college,worcester,polytechnic,institute,wpi,2013,free,online,database" /> 
\t\t\t\t\t<meta name="robots" content="index, follow" /> 
\t\t\t\t\t<meta name="Headline" content="Welcome to eDart!">
\t\t\t\t\t<meta name="CPS_SITE_NAME" content="Welcome to eDart!">
\t\t\t\t\t<meta property="og:title" content="eDart is a first-of-its-kind, completely web-based, universal trading application for WPI students."> 
\t\t\t\t\t<meta property="og:type" content="website"> 
\t\t\t\t\t<meta property="og:description" content="eDart is a first-of-its-kind, completely web-based, universal trading application for WPI students.">
\t\t\t\t\t<meta property="og:site_name" content="eDart">
\t\t\t\t\t<meta charset="UTF-8">

\t\t\t\t\t<noscript>
\t\t\t\t\t\t<meta http-equiv="refresh" content="0;URL=/noscript.php">
\t\t\t\t\t</noscript>

\t\t\t\t\t<link rel="stylesheet" type="text/css" media="screen" href="/files/fonts/Vegur/stylesheet.css">
\t\t\t\t\t<link rel="stylesheet" type="text/css" media="screen" href="/files/fonts/Titillium/stylesheet.css">
\t\t\t\t\t<link rel="stylesheet" type="text/css" media="screen" href="/lib/min/?g=css">

\t\t\t\t\t<script>
\t\t\t\t\t\tdocument.cookie='';

\t\t\t\t\t\t(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
\t\t\t\t\t\t(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
\t\t\t\t\t\tm=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
\t\t\t\t\t\t})(window,document,'script','//www.google-analytics.com/analytics.js','ga');

\t\t\t\t\t\tga('create', 'UA-44057002-1', 'wewanttotrade.com');
//.........这里部分代码省略.........

//who_ranked keeps info about who has ranked the other thus far. It is stored in an array in the database.
//If the array is null, then just make it empty. If it isn't, store it in the variable.
$who_ranked = is_array(json_decode($getExchange[0]["who_ranked"], true)) ? json_decode($getExchange[0]["who_ranked"], true) : array();
//If the user has already ranked the other user, the exchange (for them) is over
//Take them to a "special page"
if (in_array($_SESSION["userid"], $who_ranked)) {
    include_once $_SERVER["DOC_ROOT"] . "/gameover.php";
    die;
}
/* * * GET OUR INFO * * */
//Retrieve info about the first item and store it in an array
$item1 = new Item(array("action" => "get", "filter" => array("id" => $getExchange[0]["item1"])));
$item1_info = $item1->run();
//Retrieve info about the second item and store it in an array
$item2 = new Item(array("action" => "get", "filter" => array("id" => $getExchange[0]["item2"])));
$item2_info = $item2->run();
//Using session info, figure out whether the user ID of the other user (not the one logged in)
$other_id = $item1_info[0]["usr"] == $_SESSION["userid"] ? $item2_info[0]["usr"] : $item1_info[0]["usr"];
//Get info about the other user and store it into an array
$otherUser = new User(array("action" => "get", "id" => $other_id));
$otherInfo = $otherUser->run(true);
/* * * END GET INFO * * */
/* * * DECLARE A SHIT-TON OF VARIABLES * * */
/* --- MEETING UP --- */
// The meeting place is that of the first item (the user who accepted the offer)
$meetdt = $getExchange[0]["date"];
//The meeting date (timestamp)
$stadd1 = $item1_info[0]["stadd1"];
//Street address 1
$stadd2 = $item1_info[0]["stadd2"];
//Street address 2

 private function find()
 {
     global $con;
     $query = "SELECT * FROM exchange";
     $return_array = sqlToArray($con, $query, array());
     $continue = true;
     $exchange_array = array();
     if (is_array($return_array) && count($return_array) != 0) {
         for ($i = 0; $i < count($return_array); $i++) {
             $item1id = $return_array[$i]["item1"];
             $item2id = $return_array[$i]["item2"];
             $item1_obj = new Item(array("action" => "get", "filter" => array("id" => $item1id)));
             $item1_ret = $item1_obj->run();
             $item2_obj = new Item(array("action" => "get", "filter" => array("id" => $item2id)));
             $item2_ret = $item2_obj->run();
             if ($item1_ret[0]["usr"] == trim($_SESSION["userid"]) || $item2_ret[0]["usr"] == trim($_SESSION["userid"])) {
                 $who_ranked = is_array(json_decode($return_array[$i]["who_ranked"], true)) ? json_decode($return_array[$i]["who_ranked"], true) : array();
                 if (!in_array($_SESSION["userid"], $who_ranked)) {
                     array_push($exchange_array, $return_array[$i]);
                 }
             }
         }
     }
     return $exchange_array;
 }

<?php

include_once $_SERVER["DOC_ROOT"] . "/scripts/php/core.php";
if (!isset($_GET["item"])) {
    echo "No item ID specified";
    die;
}
$id = $_GET["item"];
$item_obj = new Item(array("action" => "get", "filter" => array("id" => $id)));
$item_info = $item_obj->run(true);
if (count($item_info) == 0) {
    echo "Item does not exist";
    die;
}
$item_info = $item_info[0];
?>
<!DOCTYPE html>
<html>
	<head>
		<link rel="stylesheet" type="text/css" media="screen" href="/fonts/Vegur/stylesheet.css">
		<link rel="stylesheet" type="text/css" media="screen" href="/lib/min/?g=css">
	</head>
	<body>
		<div id="embed_parent" onclick="window.open('/view.php?itemid=<?php 
echo $item_info['id'];
?>
&userid=<?php 
echo $item_info['usr'];
?>
', '_blank');" >
			<div id="header"><img src="/img/edartlogo2.png"></div>

[
<?php 
include_once $_SERVER["DOC_ROOT"] . "/scripts/php/core.php";
$all_items = new Item(array("action" => "get"));
$all_item_info = $all_items->run(true);
for ($i = 0; $i < count($all_item_info); $i++) {
    $item = $all_item_info[$i];
    ?>
    {"value":"<?php 
    echo $item["name"];
    ?>
", "title":"<?php 
    echo $item["name"];
    ?>
", "url":"/view.php?&itemid=<?php 
    echo $item["id"];
    ?>
&userid=<?php 
    echo $item["usr"];
    ?>
", "text":"<?php 
    $short_desc = explode($item["description"], '.');
    echo $short_desc[0];
    ?>
"}
<?php 
    if ($i != count($all_item_info) - 1) {
        echo ",";
    }
}
?>

function getRecentActivity($uid)
{
    //Declare the primary log for this user
    $log = array();
    $posse = "his/her";
    //User possessive
    $prono = "he/she";
    //User pronoun
    /* * * * * * * * * * * * * * * * *
     *  		 CHECK #1            *
     * 		 Join date of user 		 *
     * * * * * * * * * * * * * * * * */
    // 1) Pull the user info from the database
    $curUser = new User(array("action" => "get", "id" => $uid));
    $userInfo = $curUser->run(true);
    //The 'true' gives us extra permissions
    // 2) If the user doesn't exists...
    if (count($userInfo) == 0) {
        return array();
        //Exit
    }
    // 3) But if they do, add them to the log
    //Get the first and last name of the user
    $fname = $userInfo[0]["fname"];
    $lname = $userInfo[0]["lname"];
    $ulog_str = "{$fname} joined eDart";
    //User log string
    $ulog_dte = $userInfo[0]["join_date"];
    //User log date
    $ulog_lnk = "/profile.php?id=" . $uid;
    //User log link
    //Create a log to append
    $user_log = array("id" => $uid, "name" => "{$fname} {$lname}", "string" => $ulog_str, "date" => $ulog_dte, "link" => $ulog_lnk);
    //Append the log
    array_push($log, $user_log);
    //Set the pronoun different if it's a girl
    if (intval($userInfo[0]["gender"]) == 2) {
        $posse = "her";
        $prono = "she";
    } else {
        if (intval($userInfo[0]["gender"]) == 1) {
            $posse = "his";
            $prono = "he";
        }
    }
    /* * * * * * * * * * * * * * * * *
     *  		 CHECK #2            *
     * 		 Any added items 		 *
     * * * * * * * * * * * * * * * * */
    // 1) Return an array of every item in the database
    $itemsCall = new Item(array("action" => "get"));
    $allItems = $itemsCall->run(true);
    foreach ($allItems as $item) {
        // 2) Check to see if the user posted the item
        if ($item["usr"] == $uid) {
            //If they did, add it to the log
            $plog_str = "{$fname} posted {$posse} item: " . $item["name"];
            $plog_dte = $item["adddate"];
            $plog_lnk = "/view.php?itemid=" . $item["id"] . "&userid=" . $item["usr"];
            $post_log = array("id" => $uid, "name" => "{$fname} {$lname}", "string" => $plog_str, "date" => $plog_dte, "link" => $plog_lnk);
            array_push($log, $post_log);
        } else {
            //If they didn't, see if they made an offer on it
            $offers = json_decode($item["offers"], true);
            if (is_array($offers)) {
                foreach ($offers as $user => $offer) {
                    if (trim($user) == trim($uid)) {
                        //Turns 'a' to 'an' if item starts with a vowel
                        $vowarr = array('a', 'e', 'i', 'o', 'u');
                        $name = $item["name"];
                        $itemname_start = $name[0];
                        $a = "a";
                        if (in_array(strtolower($itemname_start), $vowarr)) {
                            $a .= "n";
                        }
                        //Get info about the item
                        $offer_item = new Item(array("action" => "get", "filter" => array("id" => $offer[0])));
                        $offer_info = $offer_item->run(true);
                        //Add it to the log
                        $olog_str = "{$fname} offered {$posse} {$offer_info[0]["name"]} for {$a} {$name}";
                        $olog_dte = $offer[1];
                        $olog_lnk = "/view.php?itemid=" . $item["id"] . "&userid=" . $item["usr"];
                        $offer_log = array("id" => $uid, "name" => "{$fname} {$lname}", "string" => $olog_str, "date" => $olog_dte, "link" => $olog_lnk);
                        array_push($log, $offer_log);
                    }
                }
            }
        }
    }
    //Now sort it
    usort($log, "syncedSort");
    //Return it
    return $log;
}

<?php

include_once $_SERVER["DOC_ROOT"] . "/scripts/php/core.php";
if (isset($_SESSION["userid"]) && isset($_POST["confirm"]) && $_POST["confirm"] == "del") {
    $item_call = new Item(array("action" => "get", "filter" => array("usr" => $_SESSION["userid"])));
    $user_items = $item_call->run(true);
    $continue = true;
    foreach ($user_items as $item) {
        if ($item["status"] != 1) {
            $continue = false;
        }
    }
    if ($continue) {
        $this_user = new User();
        $result = $this_user->delete();
        if ($result == 200) {
            $logout = new Login(array("action" => "logout"));
            $logout->run();
            header("Location:/");
            exit;
        }
    } else {
        header("Location:/");
        exit;
    }
}

 *
 */
include_once $_SERVER["DOC_ROOT"] . "/scripts/php/core.php";
//Include core functionality
//If an item ID is not in the GET parameters or it's blank...
if (!isset($_GET["id"]) || trim($_GET["id"]) == "") {
    echo 401;
    //Throw a 401 error code
    exit;
    //Exit
} else {
    //Set a JPG image page header
    header("Content-type: image/jpg");
    //Get info given the item ID
    $item = new Item(array("action" => "get", "filter" => array("id" => $_GET["id"])));
    $retItem = $item->run(true);
    //If the item is found...
    if (count($retItem) != 0) {
        //Get the first item returned given the ID
        $topIndex = $retItem[0];
        //Get it's image
        $img_contents = $topIndex["image"];
        //If the image isn't set...
        if (trim($img_contents) == "") {
            //...use the default image
            $img_contents = file_get_contents($_SERVER["DOC_ROOT"] . "/img/default.png");
        }
        //If a filter is specified...
        if (isset($_GET["filter"])) {
            //Apply it accordingly
            switch (strtolower(trim($_GET["filter"]))) {

								<?php 
}
?>
									<input type="hidden" value="" name="withdraw"  id="withdraw_item" />
						</form>

						<?php 
if (count($offers) == 0) {
    ?>
								<h6>No offers yet!</h6>
						<?php 
} else {
    if (is_array($offers)) {
        foreach ($offers as $offer) {
            $item_call = new Item(array("action" => "get", "filter" => array("id" => $offer["id"])));
            $item_info = $item_call->run(true);
            $item_info = $item_info[0];
            $owner_call = new User(array("action" => "get", "id" => $item_info["usr"]));
            $owner_info = $owner_call->run(true);
            $owner_info = $owner_info[0];
            ?>
										<div class="offer" >
											<div class="uk-grid uk_grid_preserve reset_padding">
								
												<div onclick="window.location='./view.php?itemid=<?php 
            echo $offer["id"];
            ?>
&userid=<?php 
            echo $item_info["usr"];
            ?>
';" 

function printItem($itemid)
{
    //Get the item info
    $item = new Item(array("action" => "get", "filter" => array("id" => $itemid)));
    $item_info = $item->run(true);
    //Load them into variables
    $item_img_url = "/imageviewer/?id=" . $itemid;
    $item_name = $item_info[0]["name"];
    $item_desc = $item_info[0]["description"];
    $item_price = $item_info[0]["emv"];
    $item_adddate = $item_info[0]["adddate"];
    $item_duedate = $item_info[0]["duedate"];
    $item_dodue = $item_duedate != 0;
    $item_expires = $item_info[0]["expiration"];
    $item_owner = $item_info[0]["usr"];
    //Format the due date
    //If the due date isn't this year, include the year
    if (date("Y", $item_duedate) == date("Y")) {
        $item_duedate = date("F jS", $item_duedate);
    } else {
        $item_duedate = date("n/j/Y", $item_duedate);
    }
    //Format the add date
    //Follow the same year rule as the due date
    if (date("Y", $item_adddate) == date("Y")) {
        $item_adddate = date("F jS", $item_adddate);
    } else {
        $item_adddate = date("n/j/Y", $item_adddate);
    }
    //Format the expiration date
    //Again, follow the year rule
    if (date("Y", $item_expires) == date("Y")) {
        $item_expires = date("F jS", $item_expires);
    } else {
        $item_expires = date("n/j/Y", $item_expires);
    }
    //Get the owner's info
    $owner = new User(array("action" => "get", "id" => $item_owner));
    $owner_info = $owner->run(true);
    $owner_name = $owner_info[0]["fname"] . " " . $owner_info[0]["lname"];
    $item_offer_count = is_array(json_encode($item_info[0]["offers"], true)) ? count(json_encode($item_info[0]["offers"])) : 0;
    $item_emv = strlen($item_info[0]["emv"]) != 0 ? $item_info[0]["emv"] : 0;
    $item_html = <<<ITEM1
\t\t\t\t\t\t\t   \t\t<div class="uk-width-1-1 uk-align-center"> 
\t\t\t\t\t\t\t\t\t\t<div class="item" onclick="window.location='/view.php?itemid={$itemid}&userid={$item_owner}';">
\t\t\t\t\t\t\t\t\t\t\t<div class="uk-grid uk-grid-preserve reset_padding">
\t\t\t\t\t\t\t\t\t\t\t\t<div class="uk-width-4-6 info">
\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="header">{$item_name} </div>
\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="description">{$item_desc}</div>
\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="overview uk-grid">
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="uk-width-1-3" title="Number of Offers">
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class="uk-icon-cube"></span> {$item_offer_count} 
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="uk-width-1-3" title="View Count">
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class="uk-icon-eye"></span> {$item_info[0]["views"]}
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="uk-width-1-3" title="Estimated Market Value (EMV)">
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class="uk-icon-usd"></span> {$item_emv}
\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t<div class="uk-width-2-6">
\t\t\t\t\t\t\t\t\t\t\t\t\t<div style="background:url('/imageviewer/?id={$itemid}&size=medium') no-repeat center center;" class="thumbnail"> 
\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class="gradient"></div>
\t\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t\t</div>
\t\t\t\t\t\t\t\t\t</div>\t\t\t\t\t
ITEM1;
    //Print the HTML
    echo $item_html;
}

    //Then remove it from the array
    unset($post_array["id"]);
    //If there is no item image
    if (isset($post_array["image"]) && trim($post_array["image"]) == "") {
        //Don't modify the image. Remove it from the update array.
        unset($post_array["image"]);
    }
    //Run an update API call using the item ID
    $newItem = new Item(array("action" => "update", "id" => $item_id, "fields" => $post_array));
    $code = $newItem->run(true);
    $redirect_url = "/view.php?itemid={$item_id}&userid={$_SESSION["userid"]}";
} else {
    //remove any ID attribute from the array
    unset($post_array["id"]);
    //And use the rest of the info to create a new item
    $newItem = new Item(array("action" => "create", "fields" => $post_array));
    $new_item_id = $newItem->run(true);
    $redirect_url = "/view.php?itemid={$new_item_id}&userid={$_SESSION["userid"]}";
}
$redirect_script = <<<SCRIPT
\t\t<script type="text/javascript">
\t\t\tfunction redirect() {
\t\t\t\tparent.location = "{$redirect_url}";
\t\t\t}
\t\t</script>
\t\t<script type="text/javascript" src="/lib/jquery-1.10.2/jquery-1.10.2.min.js"></script>
SCRIPT;
echo $redirect_script;
?>
</body></html>

<?php

include_once $_SERVER["DOC_ROOT"] . "/api/api_lib/call.php";
$lib = strtolower(trim($_GET["lib"]));
$library;
$return;
switch ($lib) {
    case "item":
        $library = new Item($_GET);
        $return = $library->run();
        break;
    case "user":
        $library = new User($_GET);
        $return = $library->run(false);
        break;
    case "login":
        $library = new Login($_GET);
        $return = $library->run();
        break;
    case "listener":
        $library = new Listener($_GET);
        $return = $library->listen();
        break;
    case "messenger":
        $library = new Messenger($_GET);
        $return = $library->run();
        break;
    case "exchange":
        $library = new Exchange($_GET);
        $return = $library->run();
        break;

 private function canModify($id)
 {
     global $con;
     $curItem = new Item(array("action" => "get", "filter" => array("id" => $id)));
     $itemInfo = $curItem->run(true);
     $curUser = new User(array("action" => "get", "id" => $_SESSION["userid"]));
     $userInfo = $curUser->run(true);
     return $itemInfo[0]["status"] != "0" && $userInfo[0]["status"] == "2";
 }