HTML的form表单
用html的表单模拟一个文件上传的post请求,代码如下:
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" >
< title >File Upload</ title >
</ head >
< body >
< form enctype = "multipart/form-data" action = "test.php" method = "POST" >
< input type = "hidden" name = "MAX_FILE_SIZE" value = "30000" />
Send this File:< input name = "userfile" type = "file" />
< input type = "submit" value = "Send File" />
</ form >
</ body >
</ html >
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注意:
要确保文件上传表单的属性是 enctype="multipart/form-data",否则文件上传不了
PHP
首先,需要解释一下PHP的全局变量$_FILES,此数组包含了所有上传的文件信息
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$_FILE['userfile']['name'] : 客户端机器文件的原名称
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$_FILE['userfile']['type'] : 文件的MIME类型
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$_FILE['userfile']['size'] : 已上传的文件大小
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$_FILE['userfile']['tmpname'] : 文件被上传后在服务器存储的临时文件名
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$_FILE['userfile']['error'] : 和该文件上传的错误代码
思路
1、生成40位的随机字符串作为文件名
2、根据文件是图片还是语音转存到不同的文件位置
3、暂时不做文件大小和文件类型的校验
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function processFile( $files , $type ) {
$uploadName = null;
foreach ( $files as $name => $value ) {
$originalName = $value [ 'name' ];
$arr = explode ( "." , $originalName );
$postfix = $arr [ count ( $arr ) - 1];
$tmpPath = $value [ 'tmp_name' ];
$tmpType = $value [ 'type' ];
$tmpSize = $value [ 'size' ];
}
$newname = EhlStaticFunction::generateRandomStr(40). "." . $postfix ;
switch ( $type ) {
case 1 :
// 处理声音文件
$destination = VIDEOUPLOADDIR. $newname ;
break ;
case 2 :
// 处理图像文件
$destination = IMAGEUPLOADDIR. $newname ;
break ;
}
move_uploaded_file( $tmpPath , $destination );
}
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而获取所上传文件的后缀名则可以使用一下代码:
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
< html xmlns = "http://www.w3.org/1999/xhtml" >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" />
< title ></ title >
< meta name = "keywords" content = " keywords" />
< meta name = "description" content = "description" />
</ head >
< body >
< form method = "post" action = "" enctype = "multipart/form-data" >
< input type = "file" name = "upfile" size = "20" />
< input type = "submit" name = "submit" value = "submit" />
</ form >
</ body >
</ html >
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PHP
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<?PHP
if (isset( $_POST [ 'submit' ])) {
$string = strrev ( $_FILES [ 'upfile' ][ 'name' ]);
$array = explode ( '.' , $string );
echo $array [0];
}
?>
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结果示例: