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php上传思路很主要 举一反三

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Release： 2016-06-13 12:37:16
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php上传思路很重要 举一反三

1、FORM标签enctype属性
表单中enctype="multipart/form-data"的意思，是设置表单的MIME编码。默认情况，
这个编码格式是application/x-www-form-urlencoded，不能用于文件上传；
只有使用了multipart/form-data，才能完整的传递文件数据
input标签 type 属性中的  "file"

2、$_FILES 系统函数
$_FILES['myFile']['name']   客户端文件的原名称。
$_FILES['myFile']['type']   文件的 MIME 类型，例如"image/gif"。
$_FILES['myFile']['size']   已上传文件的大小，单位为字节。
$_FILES['myFile']['tmp_name']   储存的临时文件名，一般是系统默认。
$_FILES['myFile']['error']   该文件上传相关的错误代码。

3、move_uploaded_file函数
上传后移动文件到目标位置的函数
move_uploaded_file(临时文件，目标位置和文件名);

4、is_uploaded_file 函数
判断上传MIME类型的文件函数
Related labels：
files form nbsp quot
source：php.cn
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