生成小程序菊花码（生成菊花码、更换中间logo、更改图片尺寸，加文字）

<?php
/**
* 获取小程序二维码
*/
class getMiniQrcode { public $db = ''; public function __construct() {
$this->db = mysqli_connect('', '', '', '');
} public function index($id = 0) {
if (!$id) {
echo 'no input ID';
return;
}
$res = mysqli_query($this->db, "select id,command,device_num from sys_equipment where id=" . $id);
$res = mysqli_fetch_assoc($res);
$ARRAY = [];
$ARRAY[] = $res;
// 获取token
$ACCESS_TOKEN = $this->getAccesstoken();
// 准备进入小程序的参数
$color = [
'r' => 0,
'g' => 0,
'b' => 0,
];
foreach ($ARRAY as $key => $value) {
$param = [
'path' => "pages/shop/shop?mac=" . $value['command'],
'auto_color' => false,
'line_color' => $color,
'is_hyaline' => false,
'width' => 1280,
];
// 请求微信生成二维码接口
$request_url = "https://api.weixin.qq.com/wxa/getwxacode?access_token=" . $ACCESS_TOKEN;
$result = $this->httpRequest($request_url, json_encode($param), "POST"); $myPic = 'http://www.yoursite.com/path/to/logo.jpg';
// 生成圆形自定义图片
$logo = $this->yuanImg($myPic);
//二维码与自定义图片结合
$sharePic = $this->qrcodeWithLogo($result, $logo); // 准备文件名
// $filename = date('YmdHis') . md5(time() . mt_rand(10, 99)) . '.png';
$filename = $value['id'] . '_small.png';
$filepath = "./" . $filename;
// 将二进制图片写入文件
if (@$fp = fopen($filepath, 'w+')) {
fwrite($fp, $sharePic);
fclose($fp);
} if (file_exists($filepath)) {
echo 'success';
// 这里的background.png为比二维码大的一张白色图片， 多出的空白的地方，用来写文字
$background = imagecreatefrompng('http://www.yoursite.com/path/to/background.png');
$img = imagecreatefrompng('./' . $filename);
// 合并
imagecopy($background, $img, 0, 0, 0, 0, 1280, 1280);
// 字体文件包
$font = './font.ttf';
$color = imagecolorallocate($background, 0, 0, 0);
// 要写入的文本
$text = 'SN: ' . $value['device_num'];
imagettftext($background, 60, 0, 170, 1350, $color, $font, $text); //生成图像
imagepng($background);
imagepng($background, './' . $value['id'] . '.png');
}
}
} /**
* [获取AccessToken]
* @return [type] [description]
*/
public function getAccesstoken() {
header('content-type:text/html;charset=utf-8');
//配置APPID、APPSECRET
$APPID = '';
$APPSECRET = '';
// 请求地址
$getTokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET"; $ACCESS_TOKEN = ""; $jsonResult = $this->httpRequest($getTokenUrl);
$jsonResult = json_decode($jsonResult, true); $ACCESS_TOKEN = $jsonResult["access_token"];
return $ACCESS_TOKEN;
}
/**
* 剪切图片为圆形
* @param $picture 图片数据流 比如file_get_contents(imageurl)返回的东东
* @return 图片数据流
*/
public function yuanImg($picture) {
$src_img = imagecreatefromstring(file_get_contents($picture));
$w = imagesx($src_img);
$h = imagesy($src_img);
$w = min($w, $h);
$h = $w;
$img = imagecreatetruecolor($w, $h);
//这一句一定要有
imagesavealpha($img, true);
//拾取一个完全透明的颜色,最后一个参数127为全透明
$bg = imagecolorallocatealpha($img, 255, 255, 255, 127);
imagefill($img, 0, 0, $bg);
$r = $w / 2; //圆半径
$y_x = $r; //圆心X坐标
$y_y = $r; //圆心Y坐标
for ($x = 0; $x < $w; $x++) {
for ($y = 0; $y < $h; $y++) {
$rgbColor = imagecolorat($src_img, $x, $y);
if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) {
imagesetpixel($img, $x, $y, $rgbColor);
}
}
}
/**
* 如果想要直接输出图片，应该先设header。header("Content-Type: image/png; charset=utf-8");
* 并且去掉缓存区函数
*/
//获取输出缓存，否则imagepng会把图片输出到浏览器
ob_start();
imagepng($img);
imagedestroy($img);
$contents = ob_get_contents();
ob_end_clean();
return $contents;
} /**
* 在二维码的中间区域镶嵌图片
* @param $QR 二维码数据流。比如file_get_contents(imageurl)返回的东东,或者微信给返回的东东
* @param $logo 中间显示图片的数据流。比如file_get_contents(imageurl)返回的东东
* @return 返回图片数据流
*/
public function qrcodeWithLogo($QR, $logo) {
$QR = imagecreatefromstring($QR);
$logo = imagecreatefromstring($logo);
$QR_width = imagesx($QR); //二维码图片宽度
$QR_height = imagesy($QR); //二维码图片高度
$logo_width = imagesx($logo); //logo图片宽度
$logo_height = imagesy($logo); //logo图片高度
$logo_qr_width = $QR_width / 2.2; //组合之后logo的宽度(占二维码的1/2.2)
$scale = $logo_width / $logo_qr_width; //logo的宽度缩放比(本身宽度/组合后的宽度)
$logo_qr_height = $logo_height / $scale; //组合之后logo的高度
$from_width = ($QR_width - $logo_qr_width) / 2; //组合之后logo左上角所在坐标点
/**
* 重新组合图片并调整大小
* imagecopyresampled() 将一幅图像(源图象)中的一块正方形区域拷贝到另一个图像中
*/
imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
/**
* 如果想要直接输出图片，应该先设header。header("Content-Type: image/png; charset=utf-8");
* 并且去掉缓存区函数
*/
//获取输出缓存，否则imagepng会把图片输出到浏览器
ob_start();
imagepng($QR);
imagedestroy($QR);
imagedestroy($logo);
$contents = ob_get_contents();
ob_end_clean();
return $contents;
} /**
* curl 请求
* @param [type] $url [请求地址]
* @param string $data [参数]
* @param string $method [请求方式]
* @return [type] [description]
*/
public function httpRequest($url, $data = '', $method = 'GET') {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_AUTOREFERER, 1);
if ($method == 'POST') {
curl_setopt($curl, CURLOPT_POST, 1);
if ($data != '') {
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
}
} curl_setopt($curl, CURLOPT_TIMEOUT, 30);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
}
date_default_timezone_set('PRC');
$a = new getMiniQrcode();
$id = $_GET['id'];
$a->index($id);