On 07/09/2011 01:15, Rajeev Prasad wrote:
which of the two is better? thx.
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
or
$value =~ s/%(..)/chr(hex($1))/ge;
in both cases if the input string has \ in it, it is being converted to \\
i read...
chr = function is used to convert ASCII or Unicode values into their
equivalent characters...
pack = here to convert hex to character ("C")...
I would prefer a combination of the two:
s/%([a-fA-F0-9]{2})/chr hex $1/eg;
or perhaps
s/%([[:xdigit:]]{2})/chr hex $1/eg;
Alternatively, the URI::Escape module provides uri_unescape(), which
will do this for you (in a way almost identical to the first of these
two options).
HTH,
Rob
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