PHP コード例: 画像を HTML に変換する

PHP的

function createImFromFile($path){

if(!is_file($path)){

throw new Exception("File: $path not found!");

}

$info = getimagesize($path);

switch ($info[2]){

case 1:

//gif

$tim = imagecreatefromgif($path);

$w = imagesx($tim);

$h = imagesy($tim);

$im = imagecreatetruecolor( $w,$h );

imagecopy($im,$tim,0,0,0,0,$w,$h);

imagedestroy($tim);

break;

case 2:

//jpg

$im = imagecreatefromjpeg($path);

break;

case 3:

//png

$im = imagecreatefrompng($path);

break;

default:

throw new Exception("Not support file type.File:$path");

}

return $im;

}

$im = createImFromFile("d:\\aa.jpg");

$w = imagesx($im);

$h = imagesy($im);

$str = "

imagedestroy($im);

echo $str;

/*$rgb = ImageColorAt($im, 100, 100);

$r = ($rgb >> 16) & 0xFF;

$g = ($rgb >> 8) & 0xFF;

$b = $rgb & 0xFF;*/

?>

.NET の：

保護された文字列 tmp = "";

protected void Page_Load(object sender , EventArgs e) {

ビットマップ bm = new Bitmap("d:\aa.jpg");

int w = bm.Width;

int h = bm.Height;

StringBuilder sb = new StringBuilder();

カラー c;

sb.Append("

imagecolorat returns the color index (position in the palette) for
palette based image or the color value for true color images.

imagecreatefromjpeg creates true color images, always.
imagecreatefromgif creates always palette based images and
imagecreatefrompng creates either palette or true color images as PNG
supports both image types.
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