在服务器上传图像（正方形）：我错过了什么？

  • Z时代
  • 2024-01-10
  • 分类：问答

<html> 
<header><title>My Square</title><header> 
<body> 
<?php 
/* Build a square of supplied colour. */ 
// Call the function creating a square of 110 pixels with colour of green. 
square(110, 0, 200, 0); 
// Define the function that builds the square. The parameters are size in pixels and the red, green, blue colour intensity. 
function square ($size, $r, $g, $b) { 
// Output the header telling the browser this is a png image. 
header ('Content-type: image/png'); 
// create the empty image. 
$im = imagecreatetruecolor($size, $size) or die('Cannot Initialize new GD image stream'); 
/* Define the foreground and background colours and fill the image with the bacground colour. 
The foreground colour is passed as a parameter, the background colour is white */ 
$fgcolor = imagecolorallocate($im, $r, $g, $b); 
$bgcolor = imagecolorallocate($im, 255,255,255); 
imagefill($im, 0, 0, $bgcolor); 
// Draw a rectangle. The upper left coordinate is 0,0. The lower right is size-1, size-1 since we started counting at 0. 
imagerectangle($im, 0, 0, $size-1, $size-1, $fgcolor); 
/* Write the image to standard out - in the case of the web server to the network to the browser 
and free up any memory used by the image */ 
imagepng($im); 
imagedestroy($im); 
} 
?> 
</body> 
<html>

我似乎无法让我的图像在线显示，我需要弄清楚如何在同一个函数中绘制其中的两个。我正在创建一个带有背景颜色的简单方形图像，并在圆圈内填充颜色。我似乎无法让它运行。在服务器上传图像（正方形）：我错过了什么？

回答：

你告诉浏览器，它是期望HTML，而不是图像/ PNG（HTML标签）。

删除您的HTML代码，只是有一些PHP代码。如果你想将它分离到另一个文件“square.php”然后让你的头（）告诉浏览器是什么类型的文件：

header ('Content-type: image/png');

你重新格式化文件

<?php 
    /* Build a square of supplied colour. */ 
    // Call the function creating a square of 110 pixels with colour of green. 
    square(110, 0, 200, 0); 
    // Define the function that builds the square. The parameters are size in pixels and the red, green, blue colour intensity. 
    function square ($size, $r, $g, $b) { 
    // Output the header telling the browser this is a png image. 
    header ('Content-type: image/png'); 
    // create the empty image. 
    $im = imagecreatetruecolor($size, $size) or die('Cannot Initialize new GD image stream'); 
    /* Define the foreground and background colours and fill the image with the bacground colour. 
    The foreground colour is passed as a parameter, the background colour is white */ 
    $fgcolor = imagecolorallocate($im, $r, $g, $b); 
    $bgcolor = imagecolorallocate($im, 255,255,255); 
    imagefill($im, 0, 0, $bgcolor); 
    // Draw a rectangle. The upper left coordinate is 0,0. The lower right is size-1, size-1 since we started counting at 0. 
    imagerectangle($im, 0, 0, $size-1, $size-1, $fgcolor); 
    /* Write the image to standard out - in the case of the web server to the network to the browser 
    and free up any memory used by the image */ 
    imagepng($im); 
    imagedestroy($im); 
    }

回答：

工作细phpfiddle

或指定header ('Content-type: image/png');

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