함수 i_array_column($input, $columnKey, $indexKey=null){
if(!function_exists('array_column')){
$columnKeyIsNumber = (is_numeric($columnKey ))?true:false;
$indexKeyIsNull = (is_null($indexKey))?true :false;
$indexKeyIsNumber = (is_numeric($indexKey))?true:false;
$result = 배열 ();
foreach((array)$input as $key=>$row){
if($columnKeyIsNumber){
$tmp= array_slice($row, $columnKey, 1);
$tmp= (is_array($tmp) && !empty($tmp))?current($tmp):null;
}else{
$tmp= isset($row[$columnKey])? 정의 키 = array_slice($row, $indexKey, 1);
$key = (is_array($key) && !empty($key))?current($key):null;
$key = is_null($key)?0:$key;
}다른 {
$key = isset($row[$indexKey])?$row[$indexKey]:0;
}
}
$result[$key] = $tmp ;
}
return $result;
}else{
return array_column($input, $columnKey, $indexKey);
}
}
function randcode($len, $mode = 2){
$rcode = '';
switch($mode){
사례 1: //去除0、o、O、l等易混淆字符
$chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ 23456789abcdefghijkmnpqrstuvwxyz' ;
break;
사례 2: //纯数字
$chars = '0123456789';
break;
사례 3: //전数字 大小写字母
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
break;
사례 4: //전체数字 大小写字母 一些特殊字符
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz~!@#$%^&*()';
break ;
}
$count = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for($i = 0; $i < $len; $i ) {
$rcode .= $chars[mt_rand(0, $count)];
}
return $rcode;
}
/**
* $string 일반 텍스트 또는 암호 텍스트
* $Operation 암호화 ENCODE 또는 복호화 DECODE
* $key 키
* $expiry 키 유효 기간
*/
함수 인증 코드($string, $Operation = 'DECODE', $key = '', $expiry = 0) {
$ckey_length = 4;
$key = md5($key);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($작업 == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya.md5($ keya.$keyc);
$key_length = strlen($cryptkey);
$string = $Operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf(' 0d', $expiry ? $expiry time() : 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for($ i = 0; $i <= 255; $i ) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for($j = $i = 0; $i < $i ) {
$j = ($j $box[$i] $rndkey[$i]) % 256;
$tmp = $box[$ i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for($a = $j = $i = 0; $i < $string_length; $i ) {
$a = ($a 1) % 256;
$j = ($j $box[$a]) % 256; $tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord ($string[$i]) ^ ($box[($box[$a] $box[$j]) % 256]));
}
if($작업 == '디코드') {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '', base64_encode($result));
}
}