php使用GD库将图片圆角 解决背景变黑问题 以及 图片丢失问题
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if (!function_exists(‘gene_poster‘)) {
function gene_poster($param)
{
$user = User::where([‘id‘ => $param[‘user_id‘]])->find();
$link = "http://".$_SERVER[‘SERVER_NAME‘] . ‘/index/user/register/pid/‘ . $user[‘id‘];
/* echo ‘<pre>‘;
print_r($link);
exit;*/
$background = $param[‘background‘];
$nickname = $user[‘nickname‘];
$mobile = $user[‘mobile‘];
$avatar = $user[‘avatar‘];
$path = "../public/uploads/" . date(‘Ymd‘) . "/qrcode/";
$poster_path = "../public/uploads/" . date(‘Ymd‘) . "/poster/";
if (!is_dir($path)) {
mkdir($path, 0777, true);
}
if (!is_dir($poster_path)) {
mkdir($poster_path, 0777, true);
}
if (!$user[‘qrcode‘]) {
/*1生成二维码存储*/
$qr = new EndroidQrCodeQrCode();
$qr_code_img = $qr->setText($link)
->setSize(300)
->setPadding(10)
->setErrorCorrection(‘high‘)
->setForegroundColor(array(‘r‘ => 0, ‘g‘ => 0, ‘b‘ => 0, ‘a‘ => 0))
->setBackgroundColor(array(‘r‘ => 255, ‘g‘ => 255, ‘b‘ => 255, ‘a‘ => 0))
->setLabel(‘‘)
->setLabelFontSize(16)
->setImageType(EndroidQrCodeQrCode::IMAGE_TYPE_PNG);
//$path = "";
$qrcode_file_name = $path . date(‘YmdHis‘) . $param[‘user_id‘] . ".png";
$re = $qr_code_img->save($qrcode_file_name);
User::where([‘id‘ => $param[‘user_id‘]])->update([‘qrcode‘ => $qrcode_file_name]);
} else {
$qrcode_file_name = $user[‘qrcode‘];
}
$font_path = ‘../public/assets/fonts/captcha.ttf‘;
$font_path = ‘D:WORKprojectkangaroocollegepublicassetsfontsfangzhengheitijianti.TTF‘;
/*echo ‘<pre>‘;
print_r(is_file($font_path));
exit;*/
/*2画图 保存*/
$config = array(
‘text‘ => array(
array(
‘text‘ => $nickname,
‘left‘ => 350,
‘top‘ => 2050,
‘fontPath‘ => $font_path, //字体文件
‘fontSize‘ => 50, //字号
‘fontColor‘ => ‘255,255,255‘, //字体颜色
‘angle‘ => 0,
),
array(
‘text‘ => $mobile,
‘left‘ => 350,
‘top‘ => 2150,
‘fontPath‘ => $font_path, //字体文件
‘fontSize‘ => 50, //字号
‘fontColor‘ => ‘255,255,255‘, //字体颜色
‘angle‘ => 0,
),
array(
‘text‘ => ‘我是你的专属客服‘,
‘left‘ => 160,
‘top‘ => 2250,
‘fontPath‘ => $font_path, //字体文件
‘fontSize‘ => 60, //字号
‘fontColor‘ => ‘255,255,255‘, //字体颜色
‘angle‘ => 0,
),
array(
‘text‘ => ‘可向我咨询‘,
‘left‘ => 160,
‘top‘ => 2350,
‘fontPath‘ => $font_path, //字体文件
‘fontSize‘ => 60, //字号
‘fontColor‘ => ‘255,255,255‘, //字体颜色
‘angle‘ => 0,
)
),
‘image‘ => array(
array(
// ‘url‘ => $avatar, //图片资源路径
‘url‘ => border_radius($avatar), //图片资源路径
‘left‘ => 160,
‘top‘ => 2000,
‘stream‘ => 0, //图片资源是否是字符串图像流
‘right‘ => 0,
‘bottom‘ => 0,
‘width‘ => 150,
‘height‘ => 150,
‘opacity‘ => 100
),
array(
‘url‘ => $qrcode_file_name,
‘left‘ => 900,
‘top‘ => 2000,
‘right‘ => 0,
‘stream‘ => 0,
‘bottom‘ => 0,
‘width‘ => 400,
‘height‘ => 400,
‘opacity‘ => 100
),
),
‘background‘ => $background,
);
$post_file_name = $poster_path . date(‘YmdHis‘) . $param[‘user_id‘] . ".png";;
//echo createPoster($config,$filename);
return createPoster($config, $post_file_name);
}
}
/**
* 生成宣传海报
* @param array 参数,包括图片和文字
* @param string $filename 生成海报文件名,不传此参数则不生成文件,直接输出图片
* @return bool|string [type] [description]
*/
function createPoster($config = array(), $filename = "")
{
// echo ‘<pre>‘;
// print_r($config);
// // print_r($config[‘background‘]);
// exit;
//如果要看报什么错，可以先注释调这个header
//if (empty($filename)) header("content-type: image/png");
$imageDefault = array(
‘left‘ => 0,
‘top‘ => 0,
‘right‘ => 0,
‘bottom‘ => 0,
‘width‘ => 100,
‘height‘ => 100,
‘opacity‘ => 100
);
$textDefault = array(
‘text‘ => ‘‘,
‘left‘ => 0,
‘top‘ => 0,
‘fontSize‘ => 32, //字号
‘fontColor‘ => ‘255,255,255‘, //字体颜色
‘angle‘ => 0,
);
$background = $config[‘background‘];//海报最底层得背景
//背景方法
$backgroundInfo = getimagesize($background);
$backgroundFun = ‘imagecreatefrom‘ . image_type_to_extension($backgroundInfo[2], false);
$background = $backgroundFun($background);
$backgroundWidth = imagesx($background); //背景宽度
$backgroundHeight = imagesy($background); //背景高度
$imageRes = imageCreatetruecolor($backgroundWidth, $backgroundHeight);
$color = imagecolorallocate($imageRes, 0, 0, 0);
imagefill($imageRes, 0, 0, $color);
// imageColorTransparent($imageRes, $color); //颜色透明
imagecopyresampled($imageRes, $background, 0, 0, 0, 0, imagesx($background), imagesy($background), imagesx($background), imagesy($background));
//处理了图片
if (!empty($config[‘image‘])) {
foreach ($config[‘image‘] as $key => $val) {
$val = array_merge($imageDefault, $val);
$info = getimagesize($val[‘url‘]);
$function = ‘imagecreatefrom‘ . image_type_to_extension($info[2], false);
if ($val[‘stream‘]) { //如果传的是字符串图像流
$info = getimagesizefromstring($val[‘url‘]);
$function = ‘imagecreatefromstring‘;
}
$res = $function($val[‘url‘]);
$resWidth = $info[0];
$resHeight = $info[1];
//建立画板 ，缩放图片至指定尺寸
$canvas = imagecreatetruecolor($val[‘width‘], $val[‘height‘]);
imagefill($canvas, 0, 0, $color);
/*echo ‘<pre>‘;
print_r(1);
exit;*/
/* --- 用以处理缩放png图透明背景变黑色问题 开始 --- */
if($key == 0){
$color = imagecolorallocatealpha($canvas,255,255,255,127);
imagecolortransparent($canvas,$color);
imagefill($canvas,0,0,$color);
}
/* --- 用以处理缩放png图透明背景变黑色问题 结束 --- */
//关键函数，参数（目标资源，源，目标资源的开始坐标x,y, 源资源的开始坐标x,y,目标资源的宽高w,h,源资源的宽高w,h）
imagecopyresampled($canvas, $res, 0, 0, 0, 0, $val[‘width‘], $val[‘height‘], $resWidth, $resHeight);
$val[‘left‘] = $val[‘left‘] < 0 ? $backgroundWidth - abs($val[‘left‘]) - $val[‘width‘] : $val[‘left‘];
$val[‘top‘] = $val[‘top‘] < 0 ? $backgroundHeight - abs($val[‘top‘]) - $val[‘height‘] : $val[‘top‘];
//放置图像
imagecopymerge($imageRes, $canvas, $val[‘left‘], $val[‘top‘], $val[‘right‘], $val[‘bottom‘], $val[‘width‘], $val[‘height‘], $val[‘opacity‘]);//左，上，右，下，宽度，高度，透明度
}
}
//处理文字
if (!empty($config[‘text‘])) {
foreach ($config[‘text‘] as $key => $val) {
$val = array_merge($textDefault, $val);
list($R, $G, $B) = explode(‘,‘, $val[‘fontColor‘]);
$fontColor = imagecolorallocate($imageRes, $R, $G, $B);
$val[‘left‘] = $val[‘left‘] < 0 ? $backgroundWidth - abs($val[‘left‘]) : $val[‘left‘];
$val[‘top‘] = $val[‘top‘] < 0 ? $backgroundHeight - abs($val[‘top‘]) : $val[‘top‘];
// echo ‘<pre>‘;
// print_r($val[‘fontPath‘]);
// print_r(is_file($val[‘fontPath‘]));
// exit;
imagettftext($imageRes, $val[‘fontSize‘], $val[‘angle‘], $val[‘left‘], $val[‘top‘], $fontColor, $val[‘fontPath‘], $val[‘text‘]);
}
}
//这一句一定要有
imagealphablending( $imageRes,false );
imagesavealpha($imageRes, true);
//生成图片
if (!empty($filename)) {
$res = imagepng($imageRes, $filename, 5); //保存到本地
imagedestroy($imageRes);
if (!$res) return false;
return $filename;
} else {
imagejpeg($imageRes); //在浏览器上显示
imagedestroy($imageRes);
}
}
/**
*图片修圆角
*/
function border_radius($imgpath)
{
$ext = pathinfo($imgpath);
/* echo ‘<pre>‘;
print_r($ext);
exit;*/
$src_img = null;
if(isset($ext[‘extension‘])){
switch ($ext[‘extension‘]) {
case ‘jpg‘:
$src_img = imagecreatefromjpeg($imgpath);
break;
case ‘png‘:
$src_img = imagecreatefrompng($imgpath);
break;
}
}else{
$src_img = imagecreatefromjpeg($imgpath);
}
$wh = getimagesize($imgpath);
$w = $wh[0];
$h = $wh[1];
$w = min($w, $h);
$h = $w;
$img = imagecreatetruecolor($w, $h);
//这一句一定要有
imagealphablending( $img,false );
imagesavealpha($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);
}
}
}
$avatar_path = "../public/uploads/" . date(‘Ymd‘) . "/avatar/";
if (!is_dir($avatar_path)) {
mkdir($avatar_path, 0777, true);
}
// echo ‘<pre>‘;
// print_r($img);
// exit;
// file_put_contents($avatar_path.‘avatar‘.date(‘Ymd‘).".jpg",$img);
$filename = $avatar_path.‘avatar‘.date(‘Ymd‘).".png";
header("content-type:image/png");
imagepng($img, $filename, 5); //保存到本地
/* imagepng($img);
imagedestroy($img);
exit;*/
return $filename;
}
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