72 lines
2.4 KiB
PHP
72 lines
2.4 KiB
PHP
<?php
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ini_set("display_errors","1");
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header("content-type:text/html;charset=utf-8");
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//设置时区
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date_default_timezone_set('PRC');
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//获取文件名
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$filename = $_FILES['file']['name'];
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//获取文件临时路径
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$temp_name = $_FILES['file']['tmp_name'];
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//获取大小
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$size = $_FILES['file']['size'];
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//获取文件上传码，0代表文件上传成功
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$error = $_FILES['file']['error'];
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//判断文件大小是否超过设置的最大上传限制
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if ($size > 20*1024*1024){
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//
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//echo "<script>alert('文件大小超过20M大小');window.history.go(-1);</script>";
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echo json_encode(array(
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"status" => "-2",
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"data"=> $_FILES['file'],
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"msg" => "文件大小超过20MB!",
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));
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exit();
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}
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//phpinfo函数会以数组的形式返回关于文件路径的信息
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//[dirname]:目录路径[basename]:文件名[extension]:文件后缀名[filename]:不包含后缀的文件名
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$arr = pathinfo($filename);
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//获取文件的后缀名
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$ext_suffix = $arr['extension'];
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//设置允许上传文件的后缀
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$allow_suffix = array('xls');
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//判断上传的文件是否在允许的范围内（后缀）==>白名单判断
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if(!in_array($ext_suffix, $allow_suffix)){
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//window.history.go(-1)表示返回上一页并刷新页面
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//echo "<script>alert('上传的文件类型只能是jpg,gif,jpeg,png,xls');window.history.go(-1);</script>";
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echo json_encode(array(
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"status" => "-1",
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"rows"=>$arr,
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"msg" => "仅支持上传文件类型： xls!",
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));
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exit();
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}
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//检测存放上传文件的路径是否存在，如果不存在则新建目录
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$uploadDir = __DIR__ . '/../uploads/';
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if (!file_exists($uploadDir)){
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mkdir($uploadDir);
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}
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//为上传的文件新起一个名字，保证更加安全
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$new_filename = date('YmdHis',time()).rand(100,1000).'.'.$ext_suffix;
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//将文件从临时路径移动到磁盘
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if (move_uploaded_file($temp_name, $uploadDir.$new_filename)){
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//echo "<script>alert('文件上传成功！');window.history.go(-1);</script>";
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echo json_encode(array(
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"status" => "1",
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"data"=>$arr,
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"fpath"=>$uploadDir.$new_filename,
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"msg" => "File upload success!",
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));
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}else{
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//echo "<script>alert('文件上传失败,错误码：$error');</script>";
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echo json_encode(array(
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"status" => "-1",
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"data"=>$ext_suffix,
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"fpath"=>$uploadDir,
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"file"=>$_FILES['file'],
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"msg" => "文件上传失败,错误码：$error",
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"e"=>"error",
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));
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}
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