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php多文件上传下载示例分享

2014-02-20 00:00 1446 查看

<html>
<head>
    <meta charset="utf-8">
    <title>index_uploads</title>
</head>
<body>
    <form action="uploads.php" method="post" enctype="multipart/form-data">
        <input type="file" name="file[]">
        <br>
        <input type="file" name="file[]">
        <br>
        <input type="file" name="file[]">
        <br>
        <input type="file" name="file[]">
        <br>
        <input type="file" name="file[]">
        <br>
        <input type="submit" value="uploads">
    </form>
</body>
</html>

index_uploads.php

<?php
    echo "<pre>";
    print_r($_FILES);
    echo "</pre>";

    $count = count($_FILES['file']['name']);

    for ($i = 0; $i < $count; $i++) {
        $tmpfile = $_FILES['file']['tmp_name'][$i];
        $filefix = array_pop(explode(".", $_FILES['file']['name'][$i]));
        $dstfile = "uploads/files/".time()."_".mt_rand().".".$filefix;

        if (move_uploaded_file($tmpfile, $dstfile)) {
            echo "<script>alert('succeed!');window.location.href='listdir.php';</script>";
        } else {
            echo "<script>alert('fail!');window.location.href='index_uploads.php';</script>";
        }
    }

uploads.php

<?php
    header("content-type:text/html;charset=utf-8");
    $dirname = "uploads/files";

    function listdir($dirname) {
        $ds = opendir($dirname);
        while ($file = readdir($ds)) {
            $path = $dirname.'/'.$file;
            if ($file != '.' && $file != '..'){
                if (is_dir($path)) {
                    listdir($path);
                } else {
                    echo "<tr>";
                    echo "<td><img src='$path'></td>";
                    echo "<td><a href='download.php?imgfile=$file'>Download</a></td>";
                    echo "</tr>";
                }
            }
        }
    } 
    echo "<h2>图片下载|<a href='index_uploads.php'>图片上传</a></h2>";
    echo "<table width='700px' border='1px'>";
    listdir($dirname);
    echo "</table>";

listdir.php

<?php
    $imgfile = $_GET['imgfile'];
    $path = './uploads/files/'.$imgfile;
    $imgsize = filesize($path);

    header("content-type:application/octet-stream");
    header("content-disposition:attachment;filename={$imgfile}");
    header("content-length:{$imgsize}");
    readfile($path);

download.php

download.php

核心下载：

header("content-type:application/octet-stream");
header("content-disposition:attachment;filename={$imgfile}");
header("content-length:{$imgsize}");
readfile($path);

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