[英]Select data from oracle and draw a chart using Google charts?
I want to select data from oracle and draw the chart but when I run the my code nothing else drawed.new3.php: 我想从oracle中选择数据并绘制图表,但是当我运行我的代码时,没有其他内容drawed.new3.php:
$tns2 = "(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SID = CLUSTDB1)))";
if ($conn = oci_connect("CAKTAS","******", $tns2)) {
echo "";
$stid = oci_parse($conn, "select wonum,STATUS, trunc( (sysdate-STATUSDATE) ) || 'd ' || trunc( mod((sysdate-STATUSDATE)*24,24) ) || ':' || trunc( mod( (sysdate-STATUSDATE)*24*60, 60 ) ) from maximo.WORKORDER_IT_VIEW where VFOPMGRGRP = 'IS_PRICHARHG' and STATUS <> 'COMPLETE' and STATUS <> 'CLOSE'");
oci_execute($stid);
$row = oci_fetch_array($stid, OCI_ASSOC+OCI_RETURN_NULLS);
echo json_encode($row);
} else {
die("could not connect to Maximo DB");
}
And it gives me correct array. 它给了我正确的数组。 My html code: 我的html代码:
<html>
<head>
<title>Kometschuh.de Tracker</title>
<!-- Load jQuery -->
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it
<script language="javascript" type="text/javascript"
src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js">
</script>
<!-- Load Google JSAPI -->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", { packages: ["corechart"] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "new3.php", //my getting data php file
dataType: "json",
async: false
}).responseText;
var obj = window.JSON.stringify(jsonData);
var data = google.visualization.arrayToDataTable(obj);
var options = {
title: 'Kometschuh.de Trackerdaten'
};
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it.
var chart = new google.visualization.LineChart(
document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;">
</div>
</body>
</html>
but in browser, I couldnt any chart 但在浏览器中,我无法显示任何图表
Refer my blog: http://howdyharish.wordpress.com/2014/08/11/create-google-charts-using-php-and-oracle-database/#more-3 请参阅我的博客: http : //howdyharish.wordpress.com/2014/08/11/create-google-charts-using-php-and-oracle-database/#more-3
Here is the code. 这是代码。
Index.php Index.php
<?php
ini_set(‘max_execution_time’, 123456);
$conn=oci_connect(‘username‘,’password‘,’DBname‘);
If (!conn)
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$query= oci_parse($conn, “select col1, col2 from tablename“);
oci_execute($query);
$rows = array();
$table = array();
$table['cols'] = array(
array(‘label’ => ‘col1‘, ‘type’ => ‘string‘),
array(‘label’ => ‘col2‘, ‘type’ => ‘number‘),
);
$rows = array();
while($r = oci_fetch_array($query, OCI_ASSOC+OCI_RETURN_NULLS)) {
$temp = array();
//The below col names have to be in upper caps.
echo $r["COL1"];
$temp[] = array(‘v’ => (string) $r["COL1"]);
$temp[] = array(‘v’ => (int) $r["COL2"]);
$rows[] = array(‘c’ => $temp);
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
//Use the line below to see the data in jason format
//echo $jsonTable;
//Use the below lines of code to see data in a HTML table
/*echo “<table border=’1′ >\n”;
echo “<tr><th>col1</th><th>col2</th></tr>\n”;
while ($row = oci_fetch_array($query, OCI_ASSOC+OCI_RETURN_NULLS)) {
echo “<tr>\n “;
foreach ($query as $block) {
echo ” <td>” . ($block !== null ? htmlentities($block, ENT_QUOTES) : “ ”) . “</td>\n”;
}
echo “</tr>\n”;
}
echo “</table>\n”; */
?>
//In head section
<!–Load the Ajax API–>
<script type=”text/javascript” src=”https://www.google.com/jsapi”></script>
<script type=”text/javascript” src=”http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js”></script>
<script type=”text/javascript”>
google.load(‘visualization’, ‘1’, {‘packages':['corechart']});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: ‘name of the chart‘,
is3D: ‘true’,
width: 1000,
height: 600,
fontName: ‘Times-Roman‘,
fontSize: 23,
hAxis: {textStyle: {
fontName: ‘Times-Roman‘,
fontSize: ‘25‘ }}
};
//To create a line chart
var chart = new google.visualization.LineChart(document.getElementById(‘chart_div’));
chart.draw(data, options);
//To create a column chart
var chart2 = new google.visualization.ColumnChart(document.getElementById(‘chart_div2′));
chart2.draw(data, options);
}
</script>
// In body section
<!–this is the div that will hold the pie chart–>
<div id=”chart_div” ></div>
<div id=”chart_div2″ ></div>
You cannot just use json_encode, the PHP output needs to be in the format that the Google API will understand ( Google Documentation Here ). 您不能只使用json_encode,PHP输出必须采用Google API可以理解的格式( Google文档在此处 )。 So basically, you need to have some kind of function in php that transforms the OCI results into a JSON string readable by Google. 因此,基本上,您需要在php中具有某种将OCI结果转换为Google可读的JSON字符串的函数。
I have published a solution that works pretty well in my setup, other users might benefit from it. 我已经发布了一种在我的设置中效果很好的解决方案,其他用户可能会从中受益。 You can see my code on GitHub: 您可以在GitHub上查看我的代码:
https://github.com/ernestomonroy/PHP-for-Google-Visualization-API https://github.com/ernestomonroy/PHP-for-Google-Visualization-API
The php code looks as folows: php代码如下所示:
<?php
/*
* @author Ernesto Monroy <ehmizmg@gmail.com>
* @version 1.0
* This function takes the Connection Details and the SQL String and creates an two arrays, one for the column info
* and one for the row data. This is then passed to the arrayToGoogleDataTable that builds and outputs the JSON string
*
* Input for this is:
* $un: User Name
* $pw: Password
* $db: Connection String for the DB
* (e.g. '(DESCRIPTION=(CID=MyDB)(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521)))(CONNECT_DATA=(SID=MyDB)))' )
* (tip, if you are running your PHP and Oracle Instance on the same server 127.0.0.1 should be used)
*
* WARNINGS:
* -I have not included any Oracle Error Handling
* -I have not included any row limit, so if your query returns an unmanageable amount of rows, it may become an issue for you or your web users.
*FUTURE OPPORTUNITIES:
* -This functions only return type and label properties. If you want to use pattern, id or p (for styling) you can add a check when looping through the columns
* and try to detect a particular column name that you define as the property (EG. if oci_field_name($stid, $i)=="GOOGLE_P_DATA" then ....)
*/
function getSQLDataTable($un,$pw,$db,$SQLString){
$conn=oci_connect($un,$pw,$db);
$stid= oci_parse($conn, "ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'");
oci_execute($stid);
$stid= oci_parse($conn, $SQLString);
oci_execute($stid);
$ncols = oci_num_fields($stid);
$cols = array();
$rows = array();
$cell = array();
for ($i = 1; $i <= $ncols; $i++) {
$column_label = '"'.oci_field_name($stid, $i).'"';
$column_type = oci_field_type($stid, $i);
switch($column_type) {
case 'CHAR': case 'VARCHAR2':
$column_type='"string"';
break;
case 'DATE':
$column_type='"datetime"';
break;
case 'NUMBER':
$column_type='"number"';
break;
}
$cols[$i-1]=array('"type"'=>$column_type,'"label"'=>$column_label);
}
$j=0;
while (($row = oci_fetch_array($stid, OCI_NUM+OCI_RETURN_NULLS)) != false) {
for ($i = 0; $i <= $ncols-1; $i++) {
switch(oci_field_type($stid, $i+1)) {
case 'CHAR': case 'VARCHAR2':
$cellValue='"'.$row[$i].'"';
$cellFormat='"'.$row[$i].'"';
break;
case 'DATE':
if($row[$i]==null){
$cellValue='""';
$cellFormat='""';
} else {
$cellValue=convertGoogleDate(date_create($row[$i]));
$cellFormat='"'.date_format(date_create($row[$i]), 'd/m/Y H:i:s').'"';
}
break;
case 'NUMBER':
$cellValue=number_format($row[$i], 2, '.', '');
$cellFormat='"'.$row[$i].'"';
break;
} //end of switch
$cell[$i]=array('"v"'=>$cellValue,'"f"'=>$cellFormat);
}
$rows[$j]=$cell;
$j++;
}
arrayToGoogleDataTable($cols, $rows);
}
/*This function takes in the columns and rows created in the previous function and returns the JSON String*/
function arrayToGoogleDataTable($cols, $rows) {
//Convert column array into google string literal
echo "{\n";
echo "\t".'"cols"'.": [\n";
for($i = 0; $i < count($cols)-1; $i++) {
echo "\t\t{";
$n=count($cols[$i]);
foreach($cols[$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "},\n";
}
//Last column without ending comma (},)
echo "\t\t{";
$n=count($cols[$i]);
foreach($cols[$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "}\n\t]";
//Now do the rows
//Check if empty first
if (count($rows)>0){
echo ",\n\t".'"rows"'.": [\n";
//For each row
for($j = 0; $j < count($rows)-1; $j++) {
echo "\t\t{".'"c":[';
//For each cell
for($i = 0; $i < count($rows[$j])-1; $i++) {
echo "{";
$n=count($rows[$j][$i]);
foreach($rows[$j][$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "},";
}
//Last column without ending comma (},)
$n=count($rows[$j][$i]);
echo "{";
foreach($rows[$j][$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "}]},\n";
}
//Last row
echo "\t\t{".'"c":[';
//For each cell
for($i = 0; $i < count($rows[$j])-1; $i++) {
echo "{";
$n=count($rows[$j][$i]);
foreach($rows[$j][$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "},";
}
$n=count($rows[$j][$i]);
echo "{";
foreach($rows[$j][$i] as $arrayKey => $arrayValue) {
echo $arrayKey . ":" . $arrayValue;
$n--;
if ($n>0) {echo ",";}
}
echo "}]}\n";
echo "\t]";
}
echo"\n}";
}
/*This simply takes in a Date and converts it to a string that the google API recognizes as a Date*/
function convertGoogleDate(DateTime $inDate) {
$googleString='"Date(';
$googleString=$googleString.date_format($inDate, 'Y').',';
$googleString=$googleString.(date_format($inDate, 'm')-1).',';
$googleString=$googleString.(date_format($inDate, 'd')*1).',';
$googleString=$googleString.(date_format($inDate, 'H')*1).',';
$googleString=$googleString.(date_format($inDate, 'i')*1).',';
$googleString=$googleString.(date_format($inDate, 's')*1).')"';
return $googleString;
}
?>
For the rest of the implementation on Java and HTML check the git repo posted above 对于Java和HTML的其余实现,请查看上面发布的git repo
I know its a late reply, but still a top hit on Google and I have been asked the question a couple of times 我知道它的回复很晚,但在Google上仍然很受欢迎,而且有人多次问过我这个问题
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