";
var_dump($var);
//echo "";
// 'Content-Type: application/json');
// echo json_encode($var, JSON_INVALID_UTF8_IGNORE | JSON_PRETTY_PRINT);
die();
}
function dump($var) {
//echo "";
var_dump($var);
//echo "
";
//'Content-Type: application/json');
//echo json_encode($var, JSON_INVALID_UTF8_IGNORE | JSON_PRETTY_PRINT);
}
function strtobits(string $str): string {
$ret = "";
for ($i = 0; $i < strlen($str); ++$i) {
$ord = ord($str[$i]);
for ($bitnum = 7; $bitnum >= 0; --$bitnum) {
if ($ord & (1 << $bitnum)) {
$ret .= "1";
} else {
$ret .= "0";
}
}
}
return $ret;
}
function swapEndianness(string $hex) {
return implode('', array_reverse(str_split($hex, 2)));
}
function setBit(int $n, int $p, bool $b){
return ($b ? ($n | (1 << $p)) : ($n & ~(1 << $p)) );
}
function getBit(int $b, int $p){
return intval(($b & (1 << $p)) !== 0);
}
/**
* Calculate D2S Checksum
* @param $data
* @return string
*/
function checksum($data) : string {
$nSignature = 0;
foreach($data as $byte){
$nSignature = ((($nSignature << 1) | ($nSignature >> 31)) + $byte) & 0xFFFFFFFF;
}
return swapEndianness(dechex($nSignature));
}
/**
* Find the position of the Xth occurrence of a substring in a string
* @param $haystack
* @param $needle
* @param $number integer > 0
* @return int
*/
function strposX($haystack, $needle, $number) {
if ($number == 1) {
return strpos($haystack, $needle);
} elseif ($number > 1) {
return strpos($haystack, $needle, strposX($haystack, $needle, $number - 1) + strlen($needle));
} else {
return error_log('Error: Value for parameter $number is out of range');
}
}
function isBit(string $bit): int {
return ((int) $bit ? 1 : 0 );
}
function toBits($input): string {
$output = '';
if (is_string($input)){
foreach(str_split($input) as $i){
$output .= str_pad(decbin(ord($i)), 8, 0, STR_PAD_LEFT);
}
return $output;
} else if (is_int($input)){
return str_pad(decbin($input), 8, 0, STR_PAD_LEFT);
} else if (is_array($input)){
foreach ($input as $i) {
$output .= tobits($i);
}
return $output;
}
}
function print_mem()
{
/* Currently used memory */
$mem_usage = memory_get_usage();
/* Peak memory usage */
$mem_peak = memory_get_peak_usage();
echo 'The script is now using: ' . round($mem_usage / 1024) . 'KB of memory.
';
echo 'Peak usage: ' . round($mem_peak / 1024) . 'KB of memory.
';
}