Code for simple compression of English strings implemented in PHP_PHP Tutorial

PHP, suitable for posting simple encrypted ciphertext

Copy code The code is as follows:

//replacement encrypted replacement from the previous version

function compress_func($match) {return strlen($match[0]).$match[0]{0};}

function uncompress_func($match) {return str_repeat($match[2], $match[1]);}

function compress($str) {
$i = 0;
         $pattern = array(); > return preg_replace_callback($pattern, "compress_func", $str);
}

function uncompress($str) {
return preg_replace_callback("/(d+)(w)/", " uncompress_func", $str);
}
?>


AWK, common format

Copy code The code is as follows:

#!/bin/awk

function compress(str, _ARGVEND_, str_out, str_len, i, s, l) {
str_out = "";
str_len = length(str);
s = "";
l = 1;
for(i =1; i <= str_len; i++) {
if(substr( str, i, 1) == s) l++;             str_out= str_out""s; Return str_out;
}
function uncompress(str, _ARGVEND_, str_out, str_len, i, c) {
str_out = "";
str_len = length(str);
for(i =1; i <= str_len; i++) {
c = 0;
while(substr(str, i, 1)~/[0-9]/) {
c = c*10+substr(str, i, 1) ; i ++;
}
if (c & lt; 1) C = 1;
While (C--) str_out = str_out "" substr (str, i, 1);
}
return str_out;
}





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PHP, adapted to the simple encrypted ciphertext copy code of the above post, the code is as follows: ?php //replacement comes from above A version of the encrypted replacement functioncompress_func($match){returnstrlen($match[0]).$mat...