我想在學校做一個類的「股票」網站,這是我第一次跳入PHP。基本上,該腳本從Google文檔電子表格中提取一個CSV文件,然後(嘗試)將這些值放入數組中供以後使用。我想展示前五名股票上漲和下跌,但我有問題。這裏是腳本的主要部分:在嵌套的鍵值查找在php
<html>
<head>
<?php
#Global Variables
$rising = array();
$falling = array();
$stocks = array();
#End Global Variables
#Function to read data from the spreadsheet
function get_data($url){
$ch = curl_init();
$timeout = 5;
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
#Process data
function populateTicker(){
$document = "https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AtrtT_MC9_YFdHRDUGx0a2xveXNfOHJVdXJ6bVNkMFE&output=csv";
$data= get_data($document);
$lines = explode("\n", $data);
$val = "";
foreach($lines as $key => $value){
if($key != 0){
$stockInfo = explode(",", $value);
$perChange = $stockInfo[3];
$perChangeVal = "up ";
if($perChange < 0){
$perChangeVal = "down ";
$falling['$stockInfo[0]'] = $perChange;
}else{
$rising['$stockInfo[0]'] = $perChange;
}
$stocks['$stockInfo[0]'] = array("symb" => $stockInfo[0], "name" => $stockInfo[1], "price" => $stockInfo[2]);
$val = $val . "(" . $stockInfo [0] . ") " . $stockInfo [1] . " " . "\$" . $stockInfo [2] . " " . $perChangeVal . $perChange . "% today" . "\v \v \v \v | \v \v \v \v";
}
}
//asort($falling);
//arsort($rising);
return $val;
}
function getRising($index){
if($index <= count($rising)){
$keys = array_keys($rising);
$data = $stocks[$keys[$index]];
return "(" . $data['symb'] . ") " . $data['name'] . " " . "\$" . $data['price'];
}else{
return ".";
}
}
function getFalling($index){
if($index <= count($falling)){
$keys = array_keys($falling);
$data = $stocks[$keys[$index]];
return "(" . $data['symb'] . ") " . $data['name'] . " " . "\$" . $data['price'];
}else{
return ".";
}
}
?>
</head>
<body>
<DIV id='DEBUG'>
<?php
print_r($stocks);
print_r($rising);
print_r($falling);
?>
</DIV>
<center><b><u><font size="+2">Latest Prices</font><br /></u></b></center>
<DIV ID="TICKER" STYLE="border-top:2px solid #CCCCCC; border-bottom:2px solid #CCCCCC; overflow:hidden; width:100%" onmouseover="TICKER_PAUSED=true" onmouseout="TICKER_PAUSED=false">
<?php echo populateTicker(); ?>
</DIV>
<script type="text/javascript" src="webticker_lib.js" language="javascript"></script>
<div id='Top5'>
<br />
<center><b>This page does not update automatically! Please refresh the page to update the information!</b></center>
<br />
<center><b><u><font size="+2">Top 5's</font><br /></u></b></center>
<center>
<table border="1" cellpadding="5">
<tr>
<th>Top 5 Rising</th>
<th>Top 5 Falling</th>
</tr>
<tr>
<td><?php echo getRising(1); ?></td>
<td><?php echo getFalling(1); ?></td>
</tr>
<tr>
<td><?php echo getRising(2); ?></td>
<td><?php echo getFalling(2); ?></td>
</tr> <tr>
<td><?php echo getRising(3); ?></td>
<td><?php echo getFalling(3); ?></td>
</tr> <tr>
<td><?php echo getRising(4); ?></td>
<td><?php echo getFalling(4); ?></td>
</tr> <tr>
<td><?php echo getRising(5); ?></td>
<td><?php echo getFalling(5); ?></td>
</tr>
</table>
</center>
</div>
<br />
<center><b><u><font size="+2">All Stocks</font><br /></u></b></center>
<div id='All'>
<center>
<table border="1" cellpadding="5">
<tr>
<th>Symbol</th>
<th>Name</th>
<th>Price</th>
<th>High</th>
<th>Low</th>
<th>Percent Change</th>
</tr>
<?php
#Dynamic Table Creation
foreach($stocks as $key => $value){
echo '<tr>';
echo '<td>(' . $value['symb'] . ')</td>';
echo '<td>' . $value['name'] . '</td>';
echo '<td>' . $value['price'] . '</td>';
echo '<td></td>';
echo '<td></td>';
echo '<td>' . $vaule['perChange'] . '</td>';
echo '</tr>';
}
?>
</table>
</center>
</div>
</body>
<footer>
</footer>
</html>
但是沒有東西被分配給數組。任何幫助,將不勝感激。
更新:我添加了首頁的完整源碼,index.php UPDATE2:我想通了。我來自java,並沒有完全理解變量的作用域如何在php中工作。一個簡單的
<?php
global $rising, $falling, $stocks;
...
?>
的伎倆
你似乎沒有在任何地方調用你的函數。順便說一句,如果這是「家庭作業」,你應該這樣標記,讓人們知道。 – liquorvicar 2012-02-09 18:11:33
這不是家庭作業,功能在其他地方被調用,抱歉的混亂!我知道它正在執行,因爲populateTicker()函數返回期望的數據。我遇到的一個問題是數組賦值$ rising和$ falling似乎沒有做任何事情,因爲數組保持空白... – nlowe 2012-02-09 21:31:38
歡迎來到SO btw。很高興你知道,我只是想表明這一點!我建議你花一些時間讓步驟調試工作,再加上你可能想看看單元測試。我假設你有來自Java的這些東西的經驗。你的代碼中還有一個bug:$ rising ['$ stockInfo [0]']應該只是$ rising [$ stockInfo [0]],否則它會將'$ stockInfo [0]'視爲字符串文字。 – liquorvicar 2012-02-10 09:57:50