convert_uuencode

(PHP 5)

convert_uuencode — 使用 uuencode 编码一个字符串

说明

string convert_uuencode ( string $data )

convert_uuencode() 使用 uuencode 算法对一个字符串进行编码。

uuencode 算法会将所有（含二进制）字符串转化为可输出的字符，并且可以被安全的应用于网络传输。使用 uuencode 编码后的数据将会比源数据大35%左右

参数

data: 需要被编码的数据

返回值

返回 uuencode 编码后的数据

范例

Example #1 convert_uuencode() example


<?php
$some_string = "test\ntext text\r\n";

echo convert_uuencode($some_string);
?>

参见

convert_uudecode() - 解码一个 uuencode 编码的字符串
base64_encode() - 使用 MIME base64 对数据进行编码

PHP手册 - N: 使用 uuencode 编码一个字符串

用户评论:

abc518 at gmail dot com (26-Sep-2008 09:06)

Using uuencode for passwords isn't any more secure than plain text (maybe slightly: non-developers or too lazy to figure out what you used). mcrypt or even md5 is much more secure.

zash at zash dot se (30-May-2008 08:30)

note that using base64 or uuencode to store data in a database is pretty useless. if you properly escape your data and use a binary field (BLOB etc) there is no problem.

allali at labri dot fr (02-Apr-2008 08:06)

if you want to use convert_uuencode with command uudecode you must insert a line "begin %s %s\n" at the beginning and "end\n" at the end: <?php echo "begin 644 hello.txt\n"; echo convert_uuencode("hello"); echo "end\n"; ?> the first arg. after begin is the mode (destination file rights), the second is the destination file name. Then you can do a wget followed by a uudecode. JA.

root at mantoru dot de (10-Nov-2007 05:29)

@Craig's note: base64_encode() is better suited for that. In fact, it produces smaller output and operates slightly faster. I did a little benchmark -- here are my findings: File: JPG, 631614 bytes == Base64 == execution time: 0.0039639472961426 secs output length: 842152 == UUencode == execution time: 0.004105806350708 secs output length: 870226

tmaschler at NOSPAM dot ditf-denkendorf dot de (20-Sep-2006 09:46)

Note to the tip of Craig at frostycoolslug dot com: If you are using fulltext functionality on columns with uuencoded texts, collations will not work. You might prefer to pass the text escaped to the database engine.

nmmm at nmmm dot nu (12-Apr-2006 04:17)

uuencode is recognisable as email attachment in Ms Outlook, but in Outlook Express (at least in older versions) - is not. This is shell script, but it may give you an idea how you can send attachments using uuencode: cat file.bin | uuencode file.bin | mail someone@domain.com -s "file.bin" uuencode mail attachments from other point of wiev are deprecated. However I use such technic for years now and it work well.

aidan at php dot net (29-May-2005 04:51)

This functionality is now implemented in the PEAR package PHP_Compat. More information about using this function without upgrading your version of PHP can be found on the below link: http://pear.php.net/package/PHP_Compat

Craig at frostycoolslug dot com (09-Aug-2004 03:15)

This function can be useful if you wish to store files in a MySQL database, it will save any problems with obscure binary data breaking the queries. just remember to convery-uudecode before you try to use the data again. (A common example of something that uses this system, would be email attachments)