无法在PHP中执行文件上载

发布时间：2020-12-13 13:51:19 所属栏目：PHP教程来源：网络整理

导读：我想用 PHP上传文件.我写了 form target="_self" enctype="multipart/form-data"input type="file" name="file" id="file" /input name="submit" type="submit" value="submit" //form?phpif ($_FILES["file"]["error"] 0) { echo "Error: " . $_FILES["file

我想用 PHP上传文件.我写了

<form target="_self" enctype="multipart/form-data">
<input type="file" name="file" id="file" />
<input name="submit" type="submit" value="submit" />
</form>
<?php

if ($_FILES["file"]["error"] > 0)
  {
  echo "Error: " . $_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 "Stored in: " . $_FILES["file"]["tmp_name"];
  }

?>

但它不起作用.文件对我来说是不可见的,它们在哪里？

你离工作脚本还有很长的路要走

你可以试试

<?php
$output = array ();
$errors = array ();
$savePath = "uploaded"; // PATH to upload images
$allowedExt = array (
        "png","jpg" 
);
if (isset ( $_FILES ['file'] ) && $_FILES ["file"] ["error"] == UPLOAD_ERR_OK) {

    $fileName = $_FILES ['file'] ['name'];
    $fileSize = $_FILES ['file'] ['size'];
    $fileTemp = $_FILES ['file'] ['tmp_name'];
    $fileType = $_FILES["file"]["type"] ;
    $fileExt = pathinfo ( $fileName,PATHINFO_EXTENSION );
    $fileExt = strtolower ( $fileExt );

    //var_dump($fileExt);

    if (!in_array ( $fileExt,$allowedExt )) {
        $errors [] = "Invalid File Extention";
    }

    if ($fileSize > 800*1024) {
        $errors [] = "File Too large";
    }

    if (! is_writable ( $savePath )) {
        $errors [] = "File Destination not writeable";
    }

    $fileDst = $savePath . DIRECTORY_SEPARATOR . $fileName;
    $filePrifix = basename ( $fileName,"." . $fileExt );
    $i = 0;
    while ( file_exists ( $fileDst ) ) {
        $i ++;
        $fileDst = $savePath . DIRECTORY_SEPARATOR . $filePrifix . "_" . $i . "." . $fileExt;

    }
    if (count ( $errors ) == 0) {
        if (@move_uploaded_file ( $fileTemp,$fileDst )) {
            $output['STATUS'] = "OK";
            $output['TYPE'] = $fileType;
            $output['Size'] = $fileSize;
            $output['Destination'] = $fileDst;
        } else {
            $errors [] = "Error Saving File";
        }

    }


    if(count($errors) > 0)
    {
        echo "<h2>Upload Error</h2>" ;

        foreach ($errors as $error)
        {
            echo $error,"<br/>" ;

        }
    }
    else
    {
        echo "<h2>File  Uploaded</h2>" ;
        foreach ($output as $key => $value)
        {
            echo $key,":",$value,"<br/>" ;
        }

    }
}

?>
<br/>
<br />
<form method="post" target="_self" enctype="multipart/form-data">
    <input type="file" name="file" id="file" /> <input name="submit"
        type="submit" value="submit" />
</form>

（编辑：李大同）

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