以下是一种上传文件的方法，还有许多其他方法。
正如@nordenheim所说，
$HTTP_POST_FILES自PHP 4.1.0起已弃用，因此不建议使用。
PHP代码（upload.php）
<?php$target_dir = "upload/";$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);$uploadOk = 1;$imageFileType = pathinfo($target_file, PATHINFO_EXTENSION);// Check if image file is a actual image or fake imageif (isset($_POST["submit"])) { if ($target_file == "upload/") { $msg = "cannot be empty"; $uploadOk = 0; } // Check if file already exists else if (file_exists($target_file)) { $msg = "Sorry, file already exists."; $uploadOk = 0; } // Check file size else if ($_FILES["fileToUpload"]["size"] > 5000000) { $msg = "Sorry, your file is too large."; $uploadOk = 0; } // Check if $uploadOk is set to 0 by an error else if ($uploadOk == 0) { $msg = "Sorry, your file was not uploaded."; // if everything is ok, try to upload file } else { if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) { $msg = "The file " . basename($_FILES["fileToUpload"]["name"]) . " has been uploaded."; } }}?>HTML代码启动功能
<form action="upload.php" method="post" id="myForm" enctype="multipart/form-data"> Select file to upload: <input type="file" name="fileToUpload" id="fileToUpload"> <button name="submit" type="submit" value="submit">Upload File</button> </form>
希望这可以帮助。
