query($sql);
$rs = array();
while ($row = mysqli_fetch_array($r)){
$rs[] = $row['counts'];
}
$sql_xy = "select * from xy_inf group by xy_id";
$r_xy = $conn -> query($sql_xy);
$xy = array();
while ($row_xy = mysqli_fetch_array($r_xy)){
$xy[] = $row_xy['stu_xy'];
}
require_once 'src/jpgraph.php';
require_once 'src/jpgraph_bar.php';
$graph = new Graph(600, 300);
$graph->SetScale('textlin');
$graph->SetShadow();
$graph->img->SetMargin(40, 30, 20, 40);
$barplot = new BarPlot($rs);
$graph->Add($barplot);
$barplot->value->Show();
$graph->title->Set(iconv("utf-8","gb2312","全校學(xué)生數(shù)量"));
$graph->xaxis->title->Set(iconv("utf-8","gb2312","學(xué)院"));
$graph->xaxis->SetTickLabels($xy);
$graph->yaxis->title->Set(iconv("utf-8","gb2312",'人數(shù)'));
$graph->title->SetFont(FF_SIMSUN, FS_BOLD);
$graph->xaxis->title->SetFont(FF_SIMSUN,FS_BOLD);
$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD);
$graph->Stroke();
?>
數(shù)據(jù)庫連接：conn.php
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數(shù)據(jù)庫：
mysql> use db_student;
mysql> desc stu_inf;
+--------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------+-------------+------+-----+---------+----------------+
| id | smallint(6) | NO | PRI | NULL | auto_increment |
| stu_xh | varchar(8) | NO | UNI | NULL | |
| stu_xm | varchar(40) | NO | | NULL | |
| xb_id | smallint(6) | NO | MUL | NULL | |
| xy_id | smallint(6) | NO | | NULL | |
| stu_bj | varchar(4) | NO | | NULL | |
+--------+-------------+------+-----+---------+----------------+
6 rows in set (0.00 sec)mysql> desc xy_inf;
+--------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------+-------------+------+-----+---------+----------------+
| xy_id | smallint(6) | NO | PRI | NULL | auto_increment |
| stu_xy | varchar(40) | NO | | NULL | |
+--------+-------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
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文章題目：PHP+jpgraph實(shí)現(xiàn)柱型圖表，但是橫坐標(biāo)顯示為框框，不知是何原因-創(chuàng)新互聯(lián)
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