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鸽子
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847天前#----------------------------- |
$num = ord($char); |
$char = chr($num); |
#----------------------------- |
$char = sprintf("%c", $num); # slower than chr($num) |
printf("Number %d is character %c\n", $num, $num); |
Number 101 is character e |
#----------------------------- |
@ASCII = unpack("C*", $string); |
$STRING = pack("C*", @ascii); |
#----------------------------- |
$ascii_value = ord("e"); # now 101 |
$character = chr(101); # now "e" |
#----------------------------- |
printf("Number %d is character %c\n", 101, 101); |
#----------------------------- |
@ascii_character_numbers = unpack("C*", "sample"); |
print "@ascii_character_numbers\n"; |
115 97 109 112 108 101 |
$word = pack("C*", @ascii_character_numbers); |
$word = pack("C*", 115, 97, 109, 112, 108, 101); # same |
print "$word\n"; |
sample |
#----------------------------- |
$hal = "HAL"; |
@ascii = unpack("C*", $hal); |
foreach $val (@ascii) { |
$val++; # add one to each ASCII value |
} |
$ibm = pack("C*", @ascii); |
print "$ibm\n"; # prints "IBM" |
#----------------------------- |
