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我想的图像作为背景图像添加到由我的PHP代码PHP创建图像,并添加背景图片把它
<?php
header('Content-type: image/gif');
// Fetch GET params
$mode = isset($_GET["mode"]) ? strip_tags($_GET["mode"]) : "big";
$url = isset($_GET["text"]) ? $_GET["text"] : "This is an Invalid Code";
// Get size depending on mode
$size = ($mode && $mode == "small") ? "36" : "200";
// Get chart data. Limit data length if mode is small
$chl = ($mode && $mode == "small") ? substr($url, 0, 33) : $url;
// Assemble chart image URL
$imgUrl = "http://chart.apis.google.com/chart?chs=" . $size . "x" . $size . "&cht=qr&chld=H|0&chl=" . $chl;
// Load, transform and write transparent QR code image
$im = imagecreatefrompng($imgUrl);
imagetruecolortopalette($im, false, 2);
$white = imagecolorclosest($im, 0, 0, 0);
imagecolortransparent($im, $white);
imagegif($im);
imagedestroy($im);
?>
的图像位于同一台服务器上创建的图像
http://www.example.com/img/sitebg.png
我已经试过
<?php
header('Content-type: image/gif');
// Fetch GET params
$mode = isset($_GET["mode"]) ? strip_tags($_GET["mode"]) : "big";
$url = isset($_GET["text"]) ? $_GET["text"] : "This is an Invalid Code";
// Get size depending on mode
$size = ($mode && $mode == "small") ? "36" : "200";
// Get chart data. Limit data length if mode is small
$chl = ($mode && $mode == "small") ? substr($url, 0, 33) : $url;
// Assemble chart image URL
$imgUrl = "http://chart.apis.google.com/chart?chs=" . $size . "x" . $size . "&cht=qr&chld=H|0&chl=" . $chl;
// Load, transform and write transparent QR code image
$im2 = imagecreatefrompng("http://www.example.com/example/img/BG.png");
$im = imagecreatefrompng($imgUrl);
imagetruecolortopalette($im, false, 2);
$white = imagecolorclosest($im, 0, 0, 0);
imagecolortransparent($im, $white);
// Merge the stamp onto our photo with an opacity (transparency) of 50%
imagecopymerge($im, $im2);
// Save the image to file and free memory
imagepng($im);
//imagegif($im);
imagedestroy($im);
?>
我试过了,它使图像没有显示 – RussellHarrower 2012-07-13 11:27:31
你试过服务器上的示例代码吗? – 2012-07-13 11:28:18