The $x read from the database, $y, $z Why can't I generate a graph?

Read the $x from the database, $y, $z Why can't I generate a graph?

Require (".. /comm/conn.php "); Reading data from the database section
$result = Mysqli_query ($mysql, "SELECT COUNT (*) as Nega from message where attitude=-1");
$row = Mysqli_fetch_assoc ($result);
$x = (int) $row [' Nega '];
$result = Mysqli_query ($mysql, "SELECT COUNT (*) as zero from message where attitude=0");
$row = Mysqli_fetch_assoc ($result);
$y = (int) $row [' Zero '];
$result = Mysqli_query ($mysql, "SELECT COUNT (*) as posi from message where attitude=1");
$row = Mysqli_fetch_assoc ($result);
$z = (int) $row [' posi '];
Mysqli_free_result ($result);
Mysqli_close ($mysql);


$total = $x + $y + $z; Generate a chart section
$height = 200;
$width = 200;

$y 1= $height-intval ($x/$total * $height, 10);
$y 2= $height-intval ($y/$total * $height, 10);
$y 3= $height-intval ($z/$total * $height, 10);

$im =imagecreatetruecolor ($width, $height);
$white =imagecolorallocate ($im, 255,255,255);
$black =imagecolorallocate ($im, 0,0,0);
$red =imagecolorallocate ($im, 255,0,0);
$blue =imagecolorallocate ($im, 0,0,255);
$green =imagecolorallocate ($im, 0,255,0);

Imagefill ($im, 0,0, $white);
Imagerectangle ($im, 0,0, $width-1, $height-1, $black);
Imagefilledrectangle ($im, $width/10, $y 1,3* $width/10, $height-2, $red);
Imagefilledrectangle ($im, $width/10, $y 2,6* $width/10, $height-2, $blue);
Imagefilledrectangle ($im, 7* $width/10, $y 3,9* $width/10, $height-2, $green);

Imagestring ($im, 5,30,180, $x, $white);
Imagestring ($im, 5,90,180, $y, $white);
Imagestring ($im, 5,150,180, $z, $red);

Header (' content-type:image/png ');
Imagepng ($im);
Imagedestroy ($im);
?>

------Solution--------------------
Output $x $y $z See what it is? Or is there a problem with your SQL?
------Solution--------------------
Header (' content-type:image/png ');
Header lowercase
------Solution--------------------
If your #1, #2的补充说明是真实的, then
1. Remove the last?> in the conn.php file
2, confirm that two files do not have a BOM header
3. Confirm $x + $y + $z! = 0
------Solution--------------------
That would be weird, comment out the header and look at it.
Header (' content-type:image/png ');
------Solution--------------------
$s = file_get_contents (' http://www.yisee.org/00Home/Messagegraph.php ');
Print_r (Unpack (' h* ', $s));

Get
Array ([1] = efbbbf89504e470d0a1a0a0000000d49484452000000c8000000c80802 ....

This EFBBBF is not the BOM head? What did you say?

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