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131.4 ms | 1399 KiB | 7 Q<?php
set_time_limit(0);
$length=3;
$arr_u = array();
$arr_m = array();
$arr_d = array();
$arr_t = array();
$utf8string = '';
$charset=sprintf('%s', implode('',array_merge(range('0', '9'),range('a', 'f'))));
for($i=0;$i<strlen($charset);$i++) $a[]=$charset{$i};
for($i=0,$c="",$d="chk(";$i<$length;$i++){
$c.="foreach(\$a as \$b[$i])";
$d.="\$b[$i].";
}
eval($c.$d."\"\n\");");
function chk($str){
global $arr_u ,$arr_t, $arr_m, $arr_d;
array_push($arr_t,"U+0$str");
}
global $arr_u ,$arr_t, $arr_m, $arr_d, $utf8string;
for($i=0; $i<52; $i++){
array_push($arr_u,$arr_t[rand(0,count($arr_t))]);
}
for($i=0; $i<40; $i++){
array_push($arr_d,$arr_t[rand(0,count($arr_t))]);
}
for($i=0; $i<23; $i++){
array_push($arr_m,$arr_t[rand(0,count($arr_t))]);
}
$utf8string = html_entity_decode(preg_replace("/U\+([0-9a-f]{4})/", "&#x\\1;", implode("",array_merge($arr_u, $arr_d, $arr_m))), ENT_NOQUOTES, 'UTF-8');
print $utf8string;
/*
$string = preg_replace('/%u([0-9A-F]+)/', '&#x$1;', $string);
echo html_entity_decode($string, ENT_COMPAT, 'UTF-8');
* $utf8string = html_entity_decode(preg_replace("/U\+([0-9A-F]{4})/", "&#x\\1;", $string), ENT_NOQUOTES, 'UTF-8');
*/