simplest Hash algorithm PHP


<?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

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