| Server IP : 79.136.114.73 / Your IP : 18.227.49.178 Web Server : Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.29 OpenSSL/1.0.1f System : Linux b8009 3.13.0-170-generic #220-Ubuntu SMP Thu May 9 12:40:49 UTC 2019 x86_64 User : www-data ( 33) PHP Version : 5.5.9-1ubuntu4.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /var/www/www.astacus.se/wp-content/plugins/Temp-Hold/wordfence/lib/ |
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<?php
class wfArray {
private $data = "";
private $size = 0;
private $shiftPtr = 0;
public function __construct($keys){
$this->keys = $keys;
}
public function push($val){ //associative array with keys that match those given to constructor
foreach($this->keys as $key){
$this->data .= pack('N', strlen($val[$key])) . $val[$key];
}
$this->size++;
}
public function shift(){ //If you alternately call push and shift you must periodically call collectGarbage() or ->data will keep growing
$arr = array();
if(strlen($this->data) < 1){ return null; }
if($this->shiftPtr == strlen($this->data)){ return null; }
foreach($this->keys as $key){
$len = unpack('N', substr($this->data, $this->shiftPtr, 4));
$len = $len[1];
$arr[$key] = substr($this->data, $this->shiftPtr + 4, $len);
$this->shiftPtr += 4 + $len;
}
if($this->shiftPtr == strlen($this->data)){ //garbage collection
$this->data = ""; //we don't shorten with substr() because the assignment doubles peak mem
$this->shiftPtr = 0;
}
$this->size--;
return $arr;
}
public function collectGarbage(){ //only call collectGarbage if you're alternating between pushes and shifts and never emptying the array.
//If you don't collect garbage then the data that is shifted is never freed
$this->data = substr($this->data, $this->shiftPtr); //at this point memory usage doubles because of the = assignment (string copy is made), so try not to call collect garbage unless you have to.
$this->shiftPtr = 0;
}
public function zero(){ //Rather call this instead of collect garbage because it's way more mem efficient.
$this->data = "";
$this->shiftPtr = 0;
$this->size = 0;
}
public function size(){
return $this->size;
}
}
?>