- 向浏览器输出二维码
<?php
include_once './phpqrcode.php';
header('Content-Type:image/png');
QRcode::png(
'http://www.qq.com',
false,
QR_ECLEVEL_L,
16,
4
);
- 保存二维码到本地文件夹
存放在temp文件夹下面，并且命名为qq.png
<?php
include_once './phpqrcode.php';
header('Content-Type:image/png');
$PNG_TEMP_DIR = dirname(__FILE__) . '/temp/';
$file_name = $PNG_TEMP_DIR . 'qq.png';
QRcode::png(
'http://www.qq.com',
$file_name,
QR_ECLEVEL_L,
16,
4
);
- 提供二维码的下载
以下方法适用于chrome浏览器
<?php
include_once './phpqrcode.php';
try {
$PNG_TEMP_DIR = dirname(__FILE__) . '/temp/';
$file_name = $PNG_TEMP_DIR . 'qq.png';
$download_file_name = 'qq.png';
QRcode::png(
'http://www.qq.com',
$file_name,
QR_ECLEVEL_L,
16,
4
);
if (file_exists($file_name)) {
$file = fopen($file_name, "r");
Header("Content-type: application/octet-stream");
Header("Accept-Ranges: bytes");
Header("Accept-Length: " . filesize($file_name));
Header("Content-Disposition: attachment; filename=" . $download_file_name);
// 输出文件内容
echo fread($file, filesize($file_name));
fclose($file);
//下载完成后,删除该图片
unlink($file_name);
}
} catch (\Exception $e) {
echo "无法下载图片\n";
echo $e->getMessage();
}
