convert_uuencode

(PHP 5)

convert_uuencode — Преобразува низ във формат uuencode

Описание

string convert_uuencode ( string $data )

convert_uuencode() преобразува низ използвайки uuencode алгоритъма.

Uuencode преобразува всички низове (включително двоичните) в знаци подходящи за извеждане, правейки ги безопасни за предаване по мрежата. Преобразуваните данни са с около 35% по-големи от първоначалните.

Параметри

data: Данните, които ще бъдат преобразувани в uuencode формат.

Връщани стойности

Връща данните в uuencode формат.

Примери

Example #1 Пример за convert_uuencode()


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

echo convert_uuencode($some_string);
?>

Вж. също

convert_uudecode() - Преобразува низ от формат uuencode в нормален вид
base64_encode() - Encodes data with MIME base64

count_chars

convert_uudecode

[edit] Last updated: Fri, 18 Sep 2009

add a note User Contributed Notes convert_uuencode

abc518 at gmail dot com 26-Sep-2008 07:06


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 29-May-2008 06:30


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 01-Apr-2008 06:06


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 02:29


@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 19-Sep-2006 07:46


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 02:17


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 02:51


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 08-Aug-2004 01:15


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)

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