NAME

uri_escape - Escape unsafe characters

uri_unescape - Unescape escaped characters

SYNOPSIS

use URI::Escape;
$safe = uri_escape("10% is enough\n");
$verysafe = uri_escape("foo", "\0-\377");
$str  = uri_unescape($safe);

DESCRIPTION

This module provide functions to escape and unescape URI strings. Some characters are regarded as "unsafe" and must be escaped in accordance with RFC 1738. Escaped characters are represented by a triplet consisting of the character "%" followed by two hexadecimal digits.

The uri_escape() function takes an optional second argument that overrides the set of characters that are to be escaped. The set is specified as a string that can be used in a regular expression character class (between [ ]). E.g.:

\x00-\x1f\x7f-\xff          # all control and hi-bit characters
a-z                         # all lower case characters
^A-Za-z                     # everything not a letter

The default set of characters to be escaped is:

\x00-\x20"#%;<>?{}|\\\\^~`\[\]\x7F-\xFF

The module can also export the %escapes hash which contains the mapping from all characters to the corresponding escape code.

SEE ALSO

URI::URL