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14. php上传文件

<html><body><form action="upload_file.php" method="post"enctype="multipart/form-data"><label for="file">Filename:</label><input type="file" name="file" id="file" /> <br /><input type="submit" name="submit" value="http://www.mamicode.com/Submit" /></form></body></html>
<?phpif ((($_FILES["file"]["type"] == "image/png")//file 来自html input的 name|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 2000000))  {  if ($_FILES["file"]["error"] > 0)    {    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";    }  else    {    echo "Upload: " . $_FILES["file"]["name"] . "<br />";    echo "Type: " . $_FILES["file"]["type"] . "<br />";    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";    if (file_exists("upload/" . $_FILES["file"]["name"]))      {      echo $_FILES["file"]["name"] . " already exists. ";      }    else      {      move_uploaded_file($_FILES["file"]["tmp_name"],      "upload/" . $_FILES["file"]["name"]);      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];      }    }  }else  {  echo "Invalid file";  }?>
<?php$target_dir = "uploads/";$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"])) {    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);    if($check !== false) {        echo "File is an image - " . $check["mime"] . ".";        $uploadOk = 1;    } else {        echo "File is not an image.";        $uploadOk = 0;    }}// Check if file already existsif (file_exists($target_file)) {    echo "Sorry, file already exists.";    $uploadOk = 0;}// Check file sizeif ($_FILES["fileToUpload"]["size"] > 500000) {    echo "Sorry, your file is too large.";    $uploadOk = 0;}// Allow certain file formatsif($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"&& $imageFileType != "gif" ) {    echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";    $uploadOk = 0;}// Check if $uploadOk is set to 0 by an errorif ($uploadOk == 0) {    echo "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)) {        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";    } else {        echo "Sorry, there was an error uploading your file.";    }}?>

 

14. php上传文件