From 9ebec272e23e9a01e3595454d7ebf7df3df1c940 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=AD=A4=E5=B1=B1=E5=AF=BA=E5=8C=97?= Date: Sat, 12 Jul 2025 08:24:07 +0000 Subject: [PATCH] =?UTF-8?q?=E6=89=A9=E5=B1=95=E4=BA=86=E5=9B=BE=E7=89=87?= =?UTF-8?q?=E5=8E=8B=E7=BC=A9=E9=A2=84=E8=A7=88=E5=8A=9F=E8=83=BD=201.?= =?UTF-8?q?=E5=8F=AF=E4=BB=A5=E9=80=89=E6=8B=A9=E5=A4=A7=E5=B0=8F=E4=BF=9D?= =?UTF-8?q?=E5=AD=98=E7=BC=A9=E7=95=A5=E5=9B=BE=202.=E5=8F=AF=E4=BB=A5?= =?UTF-8?q?=E6=96=B0=E5=BB=BA=E7=9B=AE=E5=BD=95=E4=BF=9D=E5=AD=98=203.?= =?UTF-8?q?=E4=B8=8E=E5=8E=9F=E6=96=B9=E6=B3=95=E8=B0=83=E7=94=A8=E4=B8=80?= =?UTF-8?q?=E8=87=B4=20conf=3D[=E2=80=B2path=E2=80=B2=3D>PPUBLIC.=E2=80=B2?= =?UTF-8?q?uploads/img=E2=80=B2,//=E5=8E=9F=E5=A7=8B=E5=9B=BE=E7=89=87?= =?UTF-8?q?=E8=B7=AF=E5=BE=84=E2=80=B2previewPath=E2=80=B2=3D>PPUBLIC.?= =?UTF-8?q?=E2=80=B2uploads/preview=E2=80=B2,//=E9=A2=84=E8=A7=88=E5=9B=BE?= =?UTF-8?q?=E8=B7=AF=E5=BE=84=E2=80=B2previewWidth=E2=80=B2=3D>300,//?= =?UTF-8?q?=E9=A2=84=E8=A7=88=E5=9B=BE=E5=AE=BD=E5=BA=A6=E2=80=B2previewQu?= =?UTF-8?q?ality=E2=80=B2=3D>75,//=E9=A2=84=E8=A7=88=E5=9B=BE=E8=B4=A8?= =?UTF-8?q?=E9=87=8F=E2=80=B2allowType=E2=80=B2=3D>[=E2=80=B2jpg=E2=80=B2,?= =?UTF-8?q?=E2=80=B2gif=E2=80=B2,=E2=80=B2png=E2=80=B2,=E2=80=B2jpeg?= =?UTF-8?q?=E2=80=B2],=E2=80=B2maxSize=E2=80=B2=3D>1024=E2=88=971024];=20u?= =?UTF-8?q?p=20=3D=20new=20upload(conf);=20result=20=3D=20$up->upload(true?= =?UTF-8?q?);=20=E5=A2=9E=E5=8A=A0=E4=BA=86=E4=B8=80=E4=BA=9B=E8=AE=BE?= =?UTF-8?q?=E7=BD=AE=204.=E4=B8=8D=E8=AE=BE=E7=BD=AE=E5=88=99=E4=BD=BF?= =?UTF-8?q?=E7=94=A8=E9=BB=98=E8=AE=A4=E6=96=B9=E6=B3=95=205.=E8=87=AA?= =?UTF-8?q?=E5=8A=A8=E6=A3=80=E6=B5=8B=E5=9B=BE=E7=89=87?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 孤山寺北 --- lib/z/upload.php | 106 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 104 insertions(+), 2 deletions(-) diff --git a/lib/z/upload.php b/lib/z/upload.php index 1f6dfc3..8d36a5f 100644 --- a/lib/z/upload.php +++ b/lib/z/upload.php @@ -1,6 +1,9 @@ '', //文件名后缀 'maxSize' => 2097152, //允许的文件大小 'randName' => true, //是否随机命名 + 'previewPath' => '', //预览图保存路径 + 'previewWidth' => 300, //预览图宽度 + 'previewQuality' => 80, //预览图质量(0-100) ]; private array $allowType = ['.jpg', '.gif', '.png', '.rar', '.zip', '.7z', '.mp3', '.mp4', '.flv', '.sql', '.txt', '.xls', '.xlsx', '.doc', '.docx', '.pdf'], //允许的文件后缀 @@ -206,13 +212,17 @@ class upload /** * 保存文件 - * @param [type] $i [description] - * @return [type] [description] + * @param int $i 文件索引 + * @return bool 是否成功 */ private function moveFile(int $i): bool { $mov = move_uploaded_file($this->filesInfo['tmp_name'][$i], iconv("UTF-8", "GBK", $this->mapping[$i]['path'])); if ($mov) { + // 如果是图片且配置了预览路径，则生成预览图 + if (in_array($this->filesInfo['ext'][$i], ['.jpg', '.jpeg', '.png', '.gif'])) { + $this->createPreviewImage($this->mapping[$i]['path'], $i); + } return true; } else { $this->error[] = "文件[{$this->filesInfo['name'][$i]}]保存失败"; @@ -221,6 +231,98 @@ class upload } } + /** + * 创建预览图片 + * @param string $sourcePath 原始图片路径 + * @param int $i 文件索引 + * @return bool 是否成功 + */ + private function createPreviewImage(string $sourcePath, int $i): bool + { + // 如果没有设置预览路径，则使用原路径下的preview目录 + $previewPath = $this->conf['previewPath'] ?: $this->savePath . '/preview'; + + // 创建预览目录 + if (!is_dir($previewPath) && !mkdir($previewPath, 0755, true)) { + $this->error[] = "无法创建预览目录[{$previewPath}]"; + return false; + } + + // 预览图文件名 + $previewFile = $previewPath . '/' . $this->mapping[$i]['name']; + + // 根据不同类型处理图片 + switch ($this->filesInfo['ext'][$i]) { + case '.jpg': + case '.jpeg': + $source = imagecreatefromjpeg($sourcePath); + break; + case '.png': + $source = imagecreatefrompng($sourcePath); + break; + case '.gif': + $source = imagecreatefromgif($sourcePath); + break; + default: + return false; + } + + if (!$source) { + $this->error[] = "无法读取图片文件[{$sourcePath}]"; + return false; + } + + // 获取原始图片尺寸 + $width = imagesx($source); + $height = imagesy($source); + + // 计算新高度，保持宽高比 + $newWidth = $this->conf['previewWidth']; + $newHeight = (int)($height * ($newWidth / $width)); + + // 创建新图像 + $preview = imagecreatetruecolor($newWidth, $newHeight); + + // 处理PNG和GIF的透明背景 + if ($this->filesInfo['ext'][$i] == '.png' || $this->filesInfo['ext'][$i] == '.gif') { + imagealphablending($preview, false); + imagesavealpha($preview, true); + $transparent = imagecolorallocatealpha($preview, 255, 255, 255, 127); + imagefilledrectangle($preview, 0, 0, $newWidth, $newHeight, $transparent); + } + + // 调整图片大小 + imagecopyresampled($preview, $source, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height); + + // 保存预览图 + $result = false; + switch ($this->filesInfo['ext'][$i]) { + case '.jpg': + case '.jpeg': + $result = imagejpeg($preview, $previewFile, $this->conf['previewQuality']); + break; + case '.png': + $result = imagepng($preview, $previewFile, (int)(9 * (100 - $this->conf['previewQuality']) / 100)); + break; + case '.gif': + $result = imagegif($preview, $previewFile); + break; + } + + // 释放内存 + imagedestroy($source); + imagedestroy($preview); + + if ($result) { + // 保存预览图信息 + $this->mapping[$i]['preview'] = $previewFile; + return true; + } else { + $this->error[] = "无法保存预览图[{$previewFile}]"; + return false; + } + } + /** * 检查POST数据是否合法 * @return [type] [description] -- Gitee