我想使用 php 使用 GD 库在我的管理面板中显示我的图表。我从我的数据库中获取日期但是当我使用任何库在折线图中显示此结果时它不起作用并且它没有显示任何错误。我可以不明白我做错了什么?谁能帮我?
<?php
include ("../setting.php");
include("../classes/phpgraphlib.php");
$result = mysql_query("SELECT DATE_FORMAT(log_date, '%Y-%m-%d') as Date,count(*) as Count FROM log
where operation_type='Add' and user_id='82' and faculty_code='0' group by log_date order by log_date") or die(mysql_error());
$MultiDimArray = array();
$data = array();
while( $row = mysql_fetch_array($result , MYSQL_BOTH) )
{
$MultiDimArray[] = array ( 'Date' => $row['Date'], 'Count' => $row['Count'] );
}
foreach($MultiDimArray as $value)
{
if ( !array_key_exists($value['Date'], $data) ) {
$data[$value['Date']] = $value['Count'];
}
else{ $data[$value['Date']] += (string)$value['Count'];}
}
$data = array_map('strval', $data);
$graph = new PHPGraphLib(400,300);
$graph->addData($data);
$graph->setTitle("Site Statistics");
$graph->setBars(false);
$graph->setLine(true);
$graph->setDataPoints(true);
$graph->setDataPointColor("maroon");
$graph->setDatadata(true);
$graph->setDataValueColor("maroon");
$graph->setGoalLine(.0025);
$graph->setGoalLineColor("red");
$graph->setXdataHorizontal(true);
$graph->createGraph();
?> `
$data 数组的输出是这样的:
array'2013-05-13' => string '7' (length=1)'2013-05-15' => string '3' (length=1)'2013-05-16' => string '5' (length=1)'2013-05-18' => string '8' (length=1)'2013-05-19' => string '2' (length=1)'2013-05-21' => string '2' (length=1)'2013-05-22' => string '10' (length=2)'2013-05-23' => string '2' (length=1)'2013-05-25' => string '1' (length=1)'2013-05-26' => string '8' (length=1)'2013-05-27' => string '19' (length=2)'2013-05-28' => string '7' (length=1)'2013-05-29' => string '3' (length=1)'2013-06-02' => string '11' (length=2)'2013-06-03' => string '2' (length=1)'2013-06-04' => string '7' (length=1)'2013-06-05' => string '3' (length=1)'2013-06-06' => string '2' (length=1)'2013-06-09' => string '15' (length=2)'2013-06-10' => string '5' (length=1)'2013-06-11' => string '1' (length=1)'2013-06-12' => string '3' (length=1)'2013-06-15' => string '10' (length=2)'2013-06-16' => string '3' (length=1)'2013-06-19' => string '2' (length=1)