PHP实现iOS端上传图片功能详解

// Swift示例代码片段：
import UIKit

func chooseAndUploadImage() {
let imagePickerController = UIImagePickerController()

// 设置来源：照相机/图库
if UIImagePickerController.isSourceTypeAvailable(.camera) && UIImagePickerController.availableCaptureModes(for: .rear)! != nil {
imagePickerController.sourceType = .camera
} else {
imagePickerController.sourceType = .photoLibrary
}

imagePickerController.delegate = self

present(imagePickerController, animated: true)
}

extension ViewController : UIImagePickerControllerDelegate & UINavigationControllerDelegate {

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
guard let selectedImage = info[.originalImage] as? UIImage,
var imageData =(selectedImage.jpegData(compressionQuality: 0.5)) else { return }

dismiss(animated: true)

uploadImageData(data: imageData)
}

func uploadImageData(data: Data) {
Alamofire.upload(multipartFormData: { multipartFormData in
multipartFormData.append(data, withName: "image", fileName: "file.jpg", mimeType: "image/jpeg")

// 添加其他参数...
}, to: "your_php_upload_endpoint.php")
}
}

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$target_dir = "/uploads/";
$uploadOk = 1;
$imageFileType = strtolower(pathinfo(basename($_FILES["image"]["name"]),PATHINFO_EXTENSION));

// 检查是否成功获取到了文件流以及错误情况等。
if (isset($_FILES["image"]) && $_FILES["image"] !== null &&
!empty($_FILES["image"]["tmp_name"])) {

$temp_file = tmpfile();
fwrite($temp_file, file_get_contents($_FILES["image"]["tmp_name"]));

move_uploaded_file(stream_get_meta_data($temp_file)['uri'], $target_dir.md5(uniqid()).'.'.$imageFileType);

echo json_encode(["status" => "success", "message" => "File uploaded successfully."]);
} else {
echo json_encode(["status" => "error", "message" => "Failed uploading the file." ]);
}
}
?>