Question

我有来自http://www.hithlonde.com/pi/#files的 PHP 程序。该程序应该将 pi 的数量转换为单独的颜色（每个像素一个数字），并将其保存为图像文件，如此图像：http://www.hithlonde.com/pi/Pi1024x768.gif。但是我的代码输出在调试控制台中是 Binary 。有点像这样：

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以下是代码：

 <?php
//Title:
//  Pi Graphical Visualization Script
//Date:
//  03.14.07
//Author:
//  Tim Habersack
//Descript: 
//  Reads in the digits of pi, assigns a color to each number 0-9, 
//  then outputs to an image with one pixel representing a number.
//Notes:
//  (http://www.hithlonde.com/pi/pi) is where I obtained the pi file, 
//  calculated to over 4 million decimal places.  The GD library
//  in your php config must be enabled for this to function.
//E-mail:
//  tim@hithlonde.com
//Copyright:
//  Released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License

function NumToColor($ImagePassed, $NumPassed)
{
    $the0 = imagecolorallocate($ImagePassed, 0xFF, 0xFF, 0xFF);
    $the1 = imagecolorallocate($ImagePassed, 0x00, 0xFF, 0xFF);
    $the2 = imagecolorallocate($ImagePassed, 0x00, 0x00, 0xFF);
    $the3 = imagecolorallocate($ImagePassed, 0xFF, 0x00, 0xFF);
    $the4 = imagecolorallocate($ImagePassed, 0x00, 0xFF, 0x00);
    $the5 = imagecolorallocate($ImagePassed, 0xFF, 0xA5, 0x00);
    $the6 = imagecolorallocate($ImagePassed, 0xFF, 0x00, 0x00);
    $the7 = imagecolorallocate($ImagePassed, 0xFF, 0xFF, 0x00);
    $the8 = imagecolorallocate($ImagePassed, 0x80, 0x80, 0x80);
    $the9 = imagecolorallocate($ImagePassed, 0x00, 0x00, 0x00);

    switch ($NumPassed)
    {
    case 0:
        return $the0;
        break;
    case 1:
        return $the1;
        break;
    case 2:
        return $the2;
        break;
    case 3:
        return $the3;
        break;
    case 4:
        return $the4;
        break;
    case 5:
        return $the5;
        break;
    case 6:
        return $the6;
        break;
    case 7:
        return $the7;
        break;
    case 8:
        return $the8;
        break;
    case 9:
        return $the9;
        break;
    }   
}

//Set the size of the pi image
$x = 300;
$y = 300;

$gd = imagecreatetruecolor($x, $y);

//Connect the pi file to variable 
$theTestPi = file_get_contents("pi.txt");

$theGoodPi = "";

$PiWalker = 0;

//gets the # of digits needed, plus some extra for the \r dropped off, reads into var

while ($PiWalker < $x * $y * 1.1)
{
    if ($theTestPi[$PiWalker] == "\r")
    {   
        $PiWalker++;
    }
    else
    {
        $theGoodPi = $theGoodPi . $theTestPi[$PiWalker];
    }
    $PiWalker++;    
}

$PiWalker = 0;

//walks through the image, painting the pi characters pixel by pixel
for ($theY = 0; $theY < $y; $theY++)
{
    for ($theX = 0; $theX < $x; $theX++)
    {
        imagesetpixel($gd, $theX, $theY, NumToColor($gd, $theGoodPi[$PiWalker]));
        $PiWalker++;
    }
}

header('Content-Type: image/png');
imagepng($gd);

?>

我正在使用 Netbeans IDE 8.0 Xampp编译器版本 1.8.3-4 （ PHP 版本 5.5.11 ）。

非常感谢任何帮助。

Answer 1

1）在打开php标记之前删除单个空格。 2）没有必要创建＆＃34; $ theGoodPi＆＃34;，只需使用TestPi，它只是复制它。这使得它需要更长的时间。 3）$ theTestPi = file_get_contents（＆＃34; http://www.hithlonde.com/pi/pi＆＃34;）;
您可能不需要更改3 4）imagesetpixel（$ gd，$ theX，$ theY，NumToColor（$ gd，$ theTestPi [$ PiWalker]））; 如果删除上面的while循环，请更改为TestPi（参见2）

您真正需要做的就是在打开php标签之前删除单个空格，尽管大声笑。

Answer 2

<?php
//Title:
//  Pi Graphical Visualization Script
//Date:
//  03.14.07
//Author:
//  Tim Habersack
//Descript: 
//  Reads in the digits of pi, assigns a color to each number 0-9, 
//  then outputs to an image with one pixel representing a number.
//Notes:
//  (http://www.hithlonde.com/pi/pi) is where I obtained the pi file, 
//  calculated to over 4 million decimal places.  The GD library
//  in your php config must be enabled for this to function.
//E-mail:
//  tim@hithlonde.com
//Copyright:
//  Released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License

function NumToColor($ImagePassed, $NumPassed)
{
    $the0 = imagecolorallocate($ImagePassed, 0xFF, 0xFF, 0xFF);
    $the1 = imagecolorallocate($ImagePassed, 0x00, 0xFF, 0xFF);
    $the2 = imagecolorallocate($ImagePassed, 0x00, 0x00, 0xFF);
    $the3 = imagecolorallocate($ImagePassed, 0xFF, 0x00, 0xFF);
    $the4 = imagecolorallocate($ImagePassed, 0x00, 0xFF, 0x00);
    $the5 = imagecolorallocate($ImagePassed, 0xFF, 0xA5, 0x00);
    $the6 = imagecolorallocate($ImagePassed, 0xFF, 0x00, 0x00);
    $the7 = imagecolorallocate($ImagePassed, 0xFF, 0xFF, 0x00);
    $the8 = imagecolorallocate($ImagePassed, 0x80, 0x80, 0x80);
    $the9 = imagecolorallocate($ImagePassed, 0x00, 0x00, 0x00);

    switch ($NumPassed)
    {
    case 0:
        return $the0;
        break;
    case 1:
        return $the1;
        break;
    case 2:
        return $the2;
        break;
    case 3:
        return $the3;
        break;
    case 4:
        return $the4;
        break;
    case 5:
        return $the5;
        break;
    case 6:
        return $the6;
        break;
    case 7:
        return $the7;
        break;
    case 8:
        return $the8;
        break;
    case 9:
        return $the9;
        break;
    }   
}

//Set the size of the pi image
$x = 300;
$y = 300;

$gd = imagecreatetruecolor($x, $y);

//Connect the pi file to variable 
$theTestPi = file_get_contents("http://www.hithlonde.com/pi/pi");

$theGoodPi = "";

$PiWalker = 0;

//gets the # of digits needed, plus some extra for the \r dropped off, reads into var

while ($PiWalker < $x * $y * 1.1)
{
    if ($theTestPi[$PiWalker] == "\r")
    {   
        $PiWalker++;
    }
    else
    {
        $theGoodPi = $theGoodPi . $theTestPi[$PiWalker];
    }
    $PiWalker++;    
}

$PiWalker = 0;

//walks through the image, painting the pi characters pixel by pixel
for ($theY = 0; $theY < $y; $theY++)
{
    for ($theX = 0; $theX < $x; $theX++)
    {
        imagesetpixel($gd, $theX, $theY, NumToColor($gd, $theGoodPi[$PiWalker]));
        $PiWalker++;
    }
}

header('Content-Type: image/png');
imagepng($gd); 

?>

不输出到图像文件

2 个答案: