我试图从数据库中获取数据并生成图形。我正在使用phpgraphlib,http://www.ebrueggeman.com/phpgraphlib/documentation/tutorial-mysql-and-phpgraphlib。我从https://github.com/libgd/libgd/releases下载了libgd
还有phpgraphlib。我有PHP 5.5和php_gd2.dll
扩展名,我认为默认情况下在php.ini
文件中启用了它。
我收到2个错误:
警告:require_once(phpgraphlib.php):无法打开流:否这样
第3行的C:\ XAMPP \ htdocs \ graph.php中的文件或目录
致命错误:require_once():无法打开所需的“ phpgraphlib.php”
(include_path ='.; C:\ XAMPP \ php \ PEAR')在C:\ XAMPP \ htdocs \ graph.php中
3号线
我还强调路径和目录出了问题。有什么帮助吗?提前致谢!!!
<?php
require_once("phpgraphlib.php");
$graph=new PHPGraphLib(400,300);
//connection to MySQL database
$link =mysql_connect('localhost','root','') or die('Could not connect :'. mysql_error());
//select db
mysql_selected_db('mynewdb') or die('Could not select database');
$dataArray=array();
//get data from database
$sql="SELECT year1,year2 * FROM scores WHERE crit='interesting semester' AND sid='13'";
$result = mysql_query($sql) or die('Query failed: ' . mysql_error());
if ($result) {
while ($row = mysql_fetch_assoc($result)) {
$crit=$row["crit"];
$year1=$row["year1"];
$year2=$row["year2"];
//add to data array
$dataArray[$crit]=$count;
}
}
//configure graph
$graph->addData($dataArray);
$graph->setTitle("Interesting Semester");
$graph->setGradient("lime", "green");
$graph->setBarOutlineColor("black");
$graph->createGraph();
?>
最佳答案
请将您的文件phpgraphlib.php放在./或C:\ XAMPP \ php \ PEAR
关于php - PHP中的图形错误,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/28765839/