<?php
/**
* TSHash v1.0
* @copyright tutorialspots.com
* Simplest and fastest Hash method
**/
class TSHash{
public $seed;
public $result;
private $chunks = array();
private $end = "";
function __construct($seed = 0x11afec09){
$this->result = $this->seed = $seed;
}
function update($str){
if($str=='') return $this;
$str = $this->end.$str;
$strs = str_split($str,4);
$end = array_pop($strs);
$this->chunks = array_merge($this->chunks,$strs);
if(strlen($end)==4){
$this->chunks[] = $end;
$this->end = '';
}else{
$this->end = $end;
}
foreach($this->chunks as $s){
$vv= unpack('l*',$s)[1];
$this->result = $this->result ^ $vv;
$this->result = $this->result ^ ($vv>>2);
}
return $this;
}
function digest(){
if(strlen($this->end)>0){
$vv = 0;
for($i=strlen($this->end)-1;$i>=0;$i--){
$vv += pow(256, strlen($this->end)-1-$i) * unpack('c*',$this->end[$i])[1];
}
$this->result = $this->result ^ $vv;
$this->result = $this->result ^ ($vv>>2);
}
//$this->result = $this->result & 0xffffffff;
return $this;
}
function toHex(){
$result = pack('l*',$this->result);
$ret = "";
for($i=strlen($result)-1;$i>=0;$i--){
$ret .= unpack('H*',$result[$i])[1];
}
return $ret;
}
}
Example:
$Hash = new TSHash();
echo $Hash->update('bcdef')->update('ghijklm')->digest()->toHex();
Result:
14aae306
