如何在Perl中将十六进制转换为char字符串 [英] How to convert hex to char string in perl

问题描述

我需要将％xx十六进制字符更改为chars。我正在尝试使用此代码，但它不起作用：

I need change the %xx HEX characters to chars. I am trying with this code but it does not works:

#!/usr/bin/perl -w

my $cadena = "%40%61%62";
print $cadena."\n";
$cadena =~ s/%//g;
print "cad: ".$cadena."\n";
my $string =~ s/([a-fA-F0-9][a-fA-F0-9])/chr(hex($1))/eg;
print "traducida: ".$string;

推荐答案

更改

my $string =~ s/([a-fA-F0-9][a-fA-F0-9])/chr(hex($1))/eg;

到

$cadena =~ s/([a-fA-F0-9][a-fA-F0-9])/chr(hex($1))/eg;

，以便在 $ cadena 。

输出： @ab

40 => @
61 => a
62 => b

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