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Graphing

cry of war

By cry of war
in PHP Coding Help

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cry of war Member

cry of war

Posted
Posted

I am making a MMORPG and I need a really simple graph for showing how much unit next level up health and so on. I have searched the web and all I can find is really complicated line graphs or bar graphs that have more then one bar or lines. I just need to be able to make the bar so say i had 50/100 health it would be 50% full. Any help to point me in the right direction would be great because i have no idea how to do this otherwise.

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BillyBoB Regular Member

BillyBoB

Posted
Posted

Hello i hope this is good enough for you there is a small white border with it.

 

<?php
header("Content-type: image/png");
$im = imagecreatefrompng("health.png");
$y1 = 1;
$y2 = 18;
$red   = imagecolorallocate($im, 255,   0,   0);
if($_GET['hp']) {
$x = imagesx($im);
$x = $x - 2;
$hpleft = $_GET['hp']/100;
$px = $x * $hpleft;
imagefilledrectangle($im, 1, $y1, $px, $y2, $red);
}else{
$x = imagesx($im);
$x = $x - 2;
$hpleft = 100/100;
$px = $x * $hpleft;
imagefilledrectangle($im, 1, $y1, $px, $y2, $red);
}
imagepng($im);
?>

 

thats all the code just make a pic width of what you would like and height of 20.

Call it health.png

 

change the url to name.php?hp=(percentage)

 

Heres what i came up with:

http://dreamshowstudios.net/images.php?hp=100

if you want you can download the pic.

http://dreamshowstudios.net/health.png

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https://forums.phpfreaks.com/topic/64280-graphing/#findComment-320560
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BillyBoB Regular Member

BillyBoB

Posted
Posted

Ok here ya go:

 

<?php
header("Content-type: image/png");
$im = imagecreatefrompng("health.png");
$x1 = 1;
$x2 = 18;
$red   = imagecolorallocate($im, 255,   0,   0);
if($_GET['hp']) {
if($_GET['hp']!=0) {
	$y = imagesy($im);
	$y = $y - 2;
	$hpleft = $_GET['hp']/100;
	$py = $y * $hpleft;
	imagefilledrectangle($im, $x1, 1, $x2, $py, $red);
}
}else{
if($_GET['hp']!=0) {
	$y = imagesy($im);
	$y = $y - 2;
	$hpleft = 100/100;
	$py = $y * $hpleft;
	imagefilledrectangle($im, $x1, 1, $x2, $py, $red);
}
}
imagepng($im);
?>

 

i did a couple of additions to it.

 

same links tho

http://dreamshowstudios.net/images.php?hp=100

if you want you can download the pic.

http://dreamshowstudios.net/health.png

 

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cry of war Member

cry of war

Posted
  • Author
Posted

any idea how to put more then one graph on a page it keeps telling me that there is an error in the header

 

heres the error

<html>
<title>Chart for life and such</title>
<body>
<table class=table_lines cellspacing="0" cellpadding="0" width="10%" border="0">
<tr>
<td colspan="6" align="center">Status</td>
</tr>
<tr>
<td colspan="2" align="center">???/???</td>
<td colspan="2" align="center">???/???</td>
<td colspan="2" align="center">???/???</td>
</tr>
<tr>
<td align="center">H<br />e<br />a<br />l<br />t<br />h</td>
<td>
<font color=ff0000><br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at C:\apache2triad\htdocs\try2.php:16) in <b>C:\apache2triad\htdocs\try2.php</b> on line <b>18</b><br />
</font>‰PNG

 

and here is the code that i am using

 

<html>
<title>Chart for life and such</title>
<body>
<table class=table_lines cellspacing="0" cellpadding="0" width="10%" border="0">
<tr>
<td colspan="6" align="center">Status</td>
</tr>
<tr>
<td colspan="2" align="center">???/???</td>
<td colspan="2" align="center">???/???</td>
<td colspan="2" align="center">???/???</td>
</tr>
<tr>
<td align="center">H<br />e<br />a<br />l<br />t<br />h</td>
<td>
<?php
/*** vert ***/
header("Content-type: image/png");
$im1 = imagecreatefrompng("health.png");
$x1 = 1;
$x2 = 18;
$color1 = imagecolorallocate($im1, 255, 0, 0);
if($_GET['health']) {
if($_GET['health']!=0) {
	$y = imagesy($im1);
	$y = $y - 2;
	$healthleft = $_GET['health']/100;
	$py = $y * $healthleft;
	imagefilledrectangle($im1, $x1, 1, $x2, $py, $color1);
}
}else{
if($_GET['health']!=0) {
	$y = imagesy($im1);
	$y = $y - 2;
	$hpleft = 100/100;
	$py = $y * $hpleft;
	imagefilledrectangle($im1, $x1, 1, $x2, $py, $red);
}
}
imagepng($im1);
?>
</td>
<td align="center">M<br />a<br />g<br />i<br />c<br />k<br />a</td>
<td>
<?php
/*** vert ***/
header("Content-type: image/png");
$im2 = imagecreatefrompng("magicka.png");
$x1 = 1;
$x2 = 18;
$color2 = imagecolorallocate($im2, 255, 0, 0);
if($_GET['magicka']) {
if($_GET['magicka']!=0) {
	$y = imagesy($im2);
	$y = $y - 2;
	$magickaleft = $_GET['magicka']/100;
	$py = $y * $magickaleft;
	imagefilledrectangle($im2, $x1, 1, $x2, $py, $color2);
}
}else{
if($_GET['magicka']!=0) {
	$y = imagesy($im2);
	$y = $y - 2;
	$magickaleft = 100/100;
	$py = $y * $magickaleft;
	imagefilledrectangle($im2, $x1, 1, $x2, $py, $color2);
}
}
imagepng($im2);
?>
</td>
<td align="center">S<br />t<br />a<br />m<br />i<br />n<br />a</td>
<td>
<?php
/*** vert ***/
header("Content-type: image/png");
$im3 = imagecreatefrompng("stamina.png");
$x1 = 1;
$x2 = 18;
$color3 = imagecolorallocate($im3, 255, 0, 0);
if($_GET['stamina']) {
if($_GET['stamina']!=0) {
	$y = imagesy($im3);
	$y = $y - 2;
	$staminaleft = $_GET['stamina']/100;
	$py = $y * $staminaleft;
	imagefilledrectangle($im3, $x1, 1, $x2, $py, $color3);
}
}else{
if($_GET['stamina']!=0) {
	$y = imagesy($im3);
	$y = $y - 2;
	$staminaleft = 100/100;
	$py = $y * $staminaleft;
	imagefilledrectangle($im3, $x1, 1, $x2, $py, $red);
}
}
imagepng($im3);
?>
</td>
</tr>

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