文件上传

自定义异常类

<?php
// 文件上传自定义异常类
class UploadException extends Exception
{
    public function __toString()
    {
        return  <<< UPLOAD
        <table>
        <tr>
        <th>错误编号</th>
        <th>错误信息</th>
        <th>错误文件</th>
        <th>错误行号</th>
        </tr>
        <tr>
        <td>$this->code</td>
        <td>$this->message</td>
        <td>$this->file</td>
        <td>$this->line</td>
        </tr>
        </table>
        <style>
        table {border:1px solid black;border-collapse:collapse;text-align:center;}
        th,td {border:1px solid black;}
        tr:last-of-type {color: red;}
        </style>
UPLOAD;
    }
}
try {
    $fileCode = $_FILES['my_pic']['error'] ?? null;
    if ($fileCode && ($fileCode > UPLOAD_ERR_OK)) {
        switch ($fileCode) {
            case UPLOAD_ERR_INI_SIZE:
                throw new UploadException('超过了php.ini中的大小设置', 1);
                break;
            case UPLOAD_ERR_FORM_SIZE:
                throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
                break;
            case UPLOAD_ERR_PARTIAL:
                throw new UploadException('文件只有部分被上传', 3);
                break;
            case UPLOAD_ERR_NO_FILE:
                throw new UploadException('没有文件上传', 4);
                break;
            case UPLOAD_ERR_NO_TMP_DIR:
                throw new UploadException('找不到临时文件夹', 6);
                break;
            case UPLOAD_ERR_CANT_WRITE:
                throw new UploadException('文件写入失败', 7);
                break;
            default:
                throw new UploadException('未知类型错误', 5);
        }
    }
    // 判断文件类型
    $type = strstr($_FILES['my_pic']['type'], '/', true) ?? null;
    if ($type && ($type !== 'image')) throw new UploadException('不是有效的图片格式', 8);
    // 判断是否是POst方式上传
    $tmp_name = $_FILES['my_pic']['tmp_name'] ?? null;
    if ($tmp_name && (!(is_uploaded_file($tmp_name)))) throw new UploadException('不是有效的上传方式', 9);
} catch (UploadException $e) {
    echo $e;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单文件上传</title>
</head>
<body>
    <form action=" " method="POST" enctype="multipart/form-data">
        <fieldset>
            <legend>文件上传</legend>
            <!-- 前端设置上传文件大小 -->
            <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
            <input type="hidden" name="MAX_FILE_SIZE" value="10000">
            <input type="file" name="my_pic" id="">
            <button>上传</button>
        </fieldset>
    </form>
</body>
</html>

文件移动

<?php
    $tmp_name = $_FILES['my_pic']['tmp_name'] ?? null;
    if ($tmp_name) {
        if (is_uploaded_file($tmp_name)) {
            // 获取原始文件名
            $fileName =  $_FILES['my_pic']['name'];
            // 生成唯一的文件名
            $destFileName = 'file/' . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $fileName) . strstr($fileName, '.');
            // 移动文件到正式目录
            move_uploaded_file($tmp_name, $destFileName);
            echo '<p>' . $_FILES['my_pic']['name'] . ':上传成功</p>';
            echo "<img src='{$destFileName}' width='200px'>";
        } else {
            throw new UploadException('不是有效的上传方式', 9);
        }
    }
} catch (UploadException $e) {
    echo $e;
}
?>
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单文件上传</title>
</head>
<body>
    <form action=" " method="POST" enctype="multipart/form-data">
        <fieldset>
            <legend>文件上传</legend>
            <!-- 前端设置上传文件大小 -->
            <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
            <!-- <input type="hidden" name="MAX_FILE_SIZE" value="10000"> -->
            <input type="file" name="my_pic" id="">
            <button>上传</button>
        </fieldset>
    </form>
</body>
</html>

多文件上传

<?php
// 文件上传自定义异常类
printf('<pre>%s</pre>', print_r($_FILES, true));
class UploadException extends Exception
{
    public function __toString()
    {
        return  <<< UPLOAD
        <table>
        <tr>
        <th>错误编号</th>
        <th>错误信息</th>
        <th>错误文件</th>
        <th>错误行号</th>
        </tr>
        <tr>
        <td>$this->code</td>
        <td>$this->message</td>
        <td>$this->file</td>
        <td>$this->line</td>
        </tr>
        </table>
        <style>
        table {border:1px solid black;border-collapse:collapse;text-align:center;}
        th,td {border:1px solid black;}
        tr:last-of-type {color: red;}
        </style>
UPLOAD;
    }
}
try {
    $error = $_FILES['my_pic']['error'];
    // print_r($error);
    // die;
    if ($error)
        foreach ($error as $vaule) {
            $fileCode = $vaule;
            if ($fileCode && ($fileCode > UPLOAD_ERR_OK)) {
                switch ($fileCode) {
                    case UPLOAD_ERR_INI_SIZE:
                        throw new UploadException('超过了php.ini中的大小设置', 1);
                        break;
                    case UPLOAD_ERR_FORM_SIZE:
                        throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
                        break;
                    case UPLOAD_ERR_PARTIAL:
                        throw new UploadException('文件只有部分被上传', 3);
                        break;
                    case UPLOAD_ERR_NO_FILE:
                        throw new UploadException('没有文件上传', 4);
                        break;
                    case UPLOAD_ERR_NO_TMP_DIR:
                        throw new UploadException('找不到临时文件夹', 6);
                        break;
                    case UPLOAD_ERR_CANT_WRITE:
                        throw new UploadException('文件写入失败', 7);
                        break;
                    default:
                        throw new UploadException('未知类型错误', 5);
                }
            }
        };
    // 判断文件类型
    $type = ($_FILES['my_pic']['type']);
    if ($type)
        foreach ($type as  $key => $vaule) {
            $type = strstr($vaule, '/', true);
            $tmp_name = $_FILES['my_pic']['tmp_name'][$key];
            if ($type === 'image') {
                // 判断上传方式是否正确
                if (is_uploaded_file($tmp_name)) {
                    $fileName =  $_FILES['my_pic']['name'][$key];
                    // 生成唯一的文件名
                    $destFileName = 'file/' . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $fileName) . strstr($fileName, '.');
                    move_uploaded_file($tmp_name, $destFileName);
                    echo '<p>' . $fileName . ':上传成功</p>';
                    echo "<img src='{$destFileName}' width='200px'>";
                } else {
                    throw new UploadException('不是有效的上传方式', 9);
                }
            } else {
                throw new UploadException('不是有效的图片格式', 8);
            }
        }
} catch (UploadException $e) {
    echo $e;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>多文件上传</title>
</head>
<body>
    <form action=" " method="POST" enctype="multipart/form-data">
        <fieldset>
            <legend>多文件上传</legend>
            <!-- 前端设置上传文件大小 -->
            <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
            <!-- <input type="hidden" name="MAX_FILE_SIZE" value="270000"> -->
            <input type="file" name="my_pic[]" multiple id="">
            <button>上传</button>
        </fieldset>
    </form>
</body>

文件上传类

<?php
class UploadException extends Exception
{
    public function __toString()
    {
        return  <<< UPLOAD
        <table>
        <tr>
        <th>错误编号</th>
        <th>错误信息</th>
        <th>错误文件</th>
        <th>错误行号</th>
        </tr>
        <tr>
        <td>$this->code</td>
        <td>$this->message</td>
        <td>$this->file</td>
        <td>$this->line</td>
        </tr>
        </table>
        <style>
        table {border:1px solid black;border-collapse:collapse;text-align:center;}
        th,td {border:1px solid black;}
        tr:last-of-type {color: red;}
        </style>
UPLOAD;
    }
}
class Upload
{
    private $fileCode;
    private $type;
    private $name;
    private $tmp_name;
    // 正式文件目录名
    private $file_name;
    public function __construct($name)
    {
        $this->file_name = $name;
        // 循环获得上传文件的各个信息
        foreach ($_FILES as $v) {
            $this->fileCode = $v['error'];
            $this->type = $v['type'];
            $this->tmp_name = $v['tmp_name'];
            $this->name = $v['name'];
            $this->get();
            $this->type();
            $this->tmp_name();
        }
    }
    private function get()
    {
        // 根据错误信息抛出相应错误
        if ($this->fileCode && ($this->fileCode > UPLOAD_ERR_OK)) {
            switch ($this->fileCode) {
                case UPLOAD_ERR_INI_SIZE:
                    throw new UploadException('超过了php.ini中的大小设置', 1);
                    break;
                case UPLOAD_ERR_FORM_SIZE:
                    throw new UploadException('超过了前端MAX_FILE_SIZE中的大小设置', 2);
                    break;
                case UPLOAD_ERR_PARTIAL:
                    throw new UploadException('文件只有部分被上传', 3);
                    break;
                case UPLOAD_ERR_NO_FILE:
                    throw new UploadException('没有文件上传', 4);
                    break;
                case UPLOAD_ERR_NO_TMP_DIR:
                    throw new UploadException('找不到临时文件夹', 6);
                    break;
                case UPLOAD_ERR_CANT_WRITE:
                    throw new UploadException('文件写入失败', 7);
                    break;
                default:
                    throw new UploadException('未知类型错误', 5);
            }
        }
    }
    private function type()
    {
        // 判断文件的格式
        $typ = strstr($this->type, '/', true);
        if ($this->type && ($typ !== 'image')) throw new UploadException('不是有效的图片格式', 8);
    }
    private function tmp_name()
    {
        // 判断文件上传方式是否为POST，正确则把文件转入正式目录
        if ($this->tmp_name) {
            if (is_uploaded_file($this->tmp_name)) {
                // 生成唯一文件名
                $destFileName = $this->file_name . 'PHP中文网' . sha1(time() . mt_rand(1, 1000) . $this->name) . strstr($this->name, '.');
                // 把文件转入正式目录
                move_uploaded_file($this->tmp_name, $destFileName);
                echo '<p>' . $this->name . ':上传成功</p>';
                echo "<img src='{$destFileName}' width='200px'>";
            } else {
                throw new UploadException('不是有效的上传方式', 9);
            }
        }
    }
}
try {
    printf('<pre>%s</pre>', print_r($_FILES, true));
    $a = new Upload('123456/');
} catch (UploadException $e) {
    echo $e;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>单文件上传</title>
</head>
<body>
    <form action=" " method="POST" enctype="multipart/form-data">
        <fieldset>
            <legend>单文件上传</legend>
            <!-- 前端设置上传文件大小 -->
            <!-- 设置大小必须写在input：file前面 如果反了就没有效果 -->
            <!-- <input type="hidden" name="MAX_FILE_SIZE" value="10000"> -->
            <input type="file" name="my_pic1" id="">
            <input type="file" name="my_pic2" id="">
            <input type="file" name="my_pic3" id="">
            <button>上传</button>
        </fieldset>
    </form>
    </form>
</body>
</html>