directBuf.hasArray()){ //获取可读字节数 int length = directBuf.readableBytes(); //分配一个新的数组来保存具有该长度的字节数据 byte...以下代码展示了如何使用slice(int,int)方法来操作ByteBuf的一个分段 Charset utf8 = Charset.forName(“UTF-8”); //
整数型(int) i:value-->例:i:1 字符串型(str) s:/length:"value"-->例:s:4:"aaaa" 数组型(array) a:/length:{key:value pairs};-->例:a:1:{i:1:/s:1:"a"} 对象型(object) O:<class_name_length> NULL型 N p.s:这个表由于md的语法有点混乱,请自行把用于转义的** 和 / 屏蔽掉 ...
typedefstructbucket {ulongh;/*Used for numeric indexing 4字节*/uintnKeyLength;/*The length of the key (for string keys) 4字节*/void*pData;/*4字节*/void*pDataPtr;/*4字节*/structbucket *pListNext;/*PHP arrays are ordered. This gives the next element in that order4字节*/structbucket ...
这个时候dump出来仍然是加密后的不可读代码,那么可以在这里加一个标志位做一次判断,看是否第一次执行,如果是的话那么让他正常走向原始execute_ex,如果已经执行过一次,那么这时的opcode就是代码本身,取出execute_data->func->op_array然后使用vld_dump_oparraydump出来,代码如下所示:...
argv:84.416bytes argv:84.176bytes 大概了解1000 个元素的整数数组需要占用 82k 内存,平均每个元素占用 84 个字节。而纯 C 中整体只需要 4k(一个整型占用4byte * 1000 )。memory_get_usage() 返回的结果并不是全是被数组占用了,还要包括一些 PHP 运行本身分配的一些结构,可能用内置函数生成的数组更接近真实的...
调用: string implode ( string $glue , array $pieces ) $glue默认, 用''则直接相连 51.substr(): 截取字符串 调用: string substr ( string $string , int $start [, int $length ] ) 字符串查找替换: 52.str_replace(): 字符串替换操作,区分大小写 ...
// Now even the length of the text is wrong and the text is trashed. ?> Even though neither 'l' nor ';' appear in the text "x<y", str_replace() still found and changed bytes. In one case, it changed the text to "x>y" and in the other it broke the encoding completely. ...
if (!in_array($cipher, openssl_get_cipher_methods())) { return false; }$iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length($cipher));$tag = null;$ciphertext = openssl_encrypt(gzcompress($plaintext),$cipher,base64_decode($key),$options=0,$iv,$tag, ); return json_encode( ...
The str_random function generates a random string of the specified length. This function uses PHP's random_bytes function:1$string = str_random(40);str_singular()The str_singular function converts a string to its singular form. This function currently only supports the English language:...
echo 'Length '.strlen($inputstring).' = '.$m." elements"; $abytes=array_fill(0,$m-1,0) ; for ($i=0; $i<=$m-1;$i++) { $raw=substr($inputstring, $i * 2 , 2); $hexed=hexdec($raw); echo 'Raw ='.$raw.' = '.$hexed.''; $abytes[$i]...