php - mysqli 查询不使用 JSON 和 Google Charts 返回结果

标签 php jquery mysql json mysqli

我在本地开发，一切正常。当我上传到主机时，一些数据库信息无法显示。

这是一个 RodgersForm.php，其中进行了查询:

<?php
require_once '../login.php';
$conn = new mysqli($hn, $un, $pw, $db);
if ($conn->connect_error) die($conn->connect_error);

var_dump($conn);

$req = mysqli_query($conn,"SELECT * FROM arodgers");

print_r($req);

if(!$req) die('Database access failed: ' . $conn->error);

$CMP = array();

foreach($req as $result) 
{ 
    $CMP[] = array( (int)$result['SEASON'],
                    (int)$result['GP'],
                    (int)$result['CMP'], 
                    (int)$result['ATT'],
                    (double)$result['CMP%'],
                    (double)$result['AVG'],
                    (int)$result['YDS'],
                    (int)$result['TD'],
                    (int)$result['FUM'],
                    (int)$result['INT'],
                    (int)$result['LNG'],
                    (double)$result['QBR'],
                    (double)$result['RAT'],);
}
print_r($CMP);
$CMP = json_encode($CMP);
?>

这是请求 json 的地方:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<link rel="stylesheet" href="../css/bootstrap.min.css">
<link rel="stylesheet" href="../css/bootstrap-theme.min.css">
<link rel="stylesheet" href="../css/main.css">
<link rel="stylesheet" href="../css/prettyPhoto.css">
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>

<?php include 'aRodgersForm.php';?>

<script type="text/javascript">
google.load('visualization', '1', {packages: ['controls', 'table']});
google.setOnLoadCallback(init);
function init () {
drawChart();
drawTable(); 
}
function drawTable() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Season');
data.addColumn('number', 'Games Played');
data.addColumn('number', 'Completions');
data.addColumn('number', 'Attempts');
data.addColumn('number', 'CMP %');
data.addColumn('number', 'AVG YDS');
data.addColumn('number', 'Yards');
data.addColumn('number', 'Touchdowns');
data.addColumn('number', 'Fumbles');
data.addColumn('number', 'Interceptions');
data.addColumn('number', 'Longest Pass');
data.addColumn('number', 'Quarterback Rating');
data.addColumn('number', 'Rating');
data.addRows(JSON.parse(<?php echo json_encode($CMP); ?>));

var table = new google.visualization.Table(document.getElementById('table_div'));

var forYDS = new google.visualization.NumberFormat(
{pattern:'####'});
forYDS.format(data, 0);

table.draw(data, {width: '100%', height: '100%'});
}

function drawChart () {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Season');
data.addColumn('number', 'Games Played');
data.addColumn('number', 'Completions');
data.addColumn('number', 'Attempts');
data.addColumn('number', 'CMP %');
data.addColumn('number', 'AVG YDS');
data.addColumn('number', 'Yards');
data.addColumn('number', 'Touchdowns');
data.addColumn('number', 'Fumbles');
data.addColumn('number', 'Interceptions');
data.addColumn('number', 'Longest Pass');
data.addColumn('number', 'QB Rating');
data.addColumn('number', 'Rating');
data.addRows(JSON.parse(<?php echo json_encode($CMP); ?>));

var columnsTable = new google.visualization.DataTable();
columnsTable.addColumn('number', 'colIndex');
columnsTable.addColumn('string', 'colLabel');
var initState= {selectedValues: []};
// put the columns into this data table (skip column 0)
for (var i = 1; i < data.getNumberOfColumns(); i++) {
columnsTable.addRow([i, data.getColumnLabel(i)]);
// you can comment out this next line if you want to have a default selection other than the whole list
}
// you can set individual columns to be the default columns (instead of populating via the loop above) like this:
initState.selectedValues.push(data.getColumnLabel(1));

var chart = new google.visualization.ChartWrapper({
chartType: 'LineChart',
containerId: 'chart_div',
dataTable: data,
options: {
    title: '',
    width: 1100,
    height: 500,
    fontSize: 19,
    bold:true,
    hAxis: { format: '####' },
    vAxis: {minValue:0}
}
});

var columnFilter = new google.visualization.ControlWrapper({
controlType: 'CategoryFilter',
containerId: 'colFilter_div',
dataTable: columnsTable,
options: {
    filterColumnLabel: 'colLabel',
    ui: {
        label: '',
        allowTyping: false,
        allowMultiple: true,
        allowNone: false,
        selectedValuesLayout: 'belowStacked'
    }
},
state: initState
});

function setChartView () {
var state = columnFilter.getState();
var row;
var view = {
    columns: [0]
};
for (var i = 0; i < state.selectedValues.length; i++) {
    row = columnsTable.getFilteredRows([{column: 1, value: state.selectedValues[i]}])[0];
    view.columns.push(columnsTable.getValue(row, 0));
}
// sort the indices into their original order
view.columns.sort(function (a, b) {
    return (a - b);
});
chart.setView(view);
chart.draw();
}
google.visualization.events.addListener(columnFilter, 'statechange', setChartView);

setChartView();
columnFilter.draw();
}
</script>
</head>

<body>
<nav class="navbar navbar-default navbar-fixed-top">
<ul class="pull-left">
<li><a href="../index.php">Home</a></li>
<li><a href="../enigma.php">News</a></li>
<li><a href="../slideshow.php">News</a></li>
<li><a href="../stats.php">Stats</a></li>
<li><a href="../Schedule.php">Schedule</a></li>
</ul>
<ul class="pull-right">
<li><a href="#">Log In</a></li>
<li><a href="#">Help</a></li>
</ul>
</nav>
<div class="jumbotron" id="statsJumbo">
<div id="statsHeader1">
<div class="col-xs-12 col-md-offset-1" id="statsHeader">
<div class="col-md-6 col-xs-12" id="generalStats">
    <h1>Aaron Rodgers</h1></br>
    <h2>QB - Green Bay Packers | 6'2" - 225lbs</h2></br></br>
    <h4>Drafted &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2005 1st Round, 24th Overall by Green Bay</h4></br>
    <h4> College &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; California 2003-2004</h4></br>
    <h4>Expirience &nbsp;&nbsp;&nbsp;12 Seasons</h4>
</div>
<div class="col-md-2 col-xs-4" id="playerPic">
    <img src="http://a.espncdn.com/combiner/i?img=/i/headshots/nfl/players/full/8439.png&w=350&h=254">
</div>
<div class="col-md-2 col-xs-4" id="playerNumber">
    <p class="statsPlayerNumber">#12</p>
</div>
</div>
</div>
<div class="col-md-12" id="table_div"></div>
<div class="col-md-4 col-md-offset-1" id="chart_div"></div>
<div class="col-md-2 col-md-offset-4" id="colFilter_div"></div>
</div>
<div class="footer col-md-12">
<div class="container text-center">
<p>Copyright (c) 2015 Wyatt Thompson</p>
</div>
</div>
<script type="text/javascript" src="../js/jquery-1.9.1.min.js"></script>
<script src="../js/bootstrap.min.js"></script>
<script src="../js/jquery.js"></script>
</body>
</html>

这是来自另一个页面的查询，它显示回显的结果，但 var_dump($conn) 返回对象(mysqli)#1 (0) { }:

$query = "SELECT * FROM arodgers WHERE season =(SELECT max(season) FROM arodgers)";
$result = $conn->query($query);
if(!$result) die('Database access failed: ' . $conn->error);
    $rows = $result->fetch_array(MYSQLI_BOTH);
echo <<<_END
    <p>Season: $rows[SEASON]<br />
    Completions: $rows[CMP] <br />
    Attempts: $rows[ATT] <br />
    Yards: $rows[YDS] <br />
    Completion%: $rows[CMP] <br />
    Touchdowns: $rows[TD] </p>

_END;

Live Page 因此，如果您在主页上查看球员的统计数据，结果会全部显示出来，但如果您单击完整的统计数据页面，则它是空白的。唯一没有显示的结果是我使用 JSON for Google Charts 获得的结果。

最佳答案

这似乎是免费主机使用的旧版本 PHP 的问题。我用更新的 php 转移到另一个主机，网站工作正常。我是5.6开发的，宿主是5.2。

关于php - mysqli 查询不使用 JSON 和 Google Charts 返回结果，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37711998/

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