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PHP file upload simple example sharing

Feb 27, 2018 am 09:40 AM
php share Example

This article mainly shares with you a simple example of php file upload, hoping to help everyone.

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##文件上传

1.在表单头要写入enctype="multipart/form-data";

2.最好定义一个隐藏的hidden,name="MAX_FILE_SIZE"value来定义大小

##使用到的函数

1.is_uploaded_file用来判定文件是否是通过HTTP-HOST上传的,返回bool值

2.move_uploaded_file('临时文件路径','目标文件路径')

其中临时文件路径是指$_FILES[pic][tmp_name]当中的值

##处理多个文件上传是,post所传的的数组信息

$_FILES[pic][tmp_name][0]这个元素这是第一个文件的临时存储路径

$_FILES[pic][name][0]这个元素这是第一个文件的文件名

$_FILES[pic][error][0]这个元素这是第一个文件的出错信息

$_FILES[pic][size][0]这个元素这是第一个文件的大小

以此类推,第二个文件下标就增加,几个文件下标就依次增加。也就是说原来的存放元素的位置全部变成了一个数组,用来存放其他组的相同信息

##文件下载

只需要一个普通的a链接就可以定义一个下载路径

但是不能识别MIME类型的文件,会直接打开而不是显示下载,所以我们要让a链接跳转到操作页面对头部信息进行设置

header('Contebt-Type:image/gif');//发送指定类型的头信息

header('Content-Disposition:attachment;filename;filename="test.gif"');//发送文件的头信息,文件名和附件名

header('Content-Lenght:3390');//发送指定文件大小

Copy after login

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What should be paid attention to when uploading php files

##php file upload class and PHP encapsulated multi-file upload class sharing

PHP file upload analysis

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