[HELP] Explain me please how this function works

[Xorg]

Hi,
Anyone here can tell me what this function do?

PHP Code:

DWORD SearchPattern(char* pattern,DWORD start_offset ,DWORD ende)
{
        DWORD offset=start_offset;
        DWORD start=offset; 
        DWORD backoffset=0;
        DWORD size =strlen(pattern)-1;
        DWORD foundoffset=0;
 
        char * pEnd=pattern;
        while(1)
        {
                char &myposition=*(char*)offset;
                if ((pEnd[1]!='x'))
                {
                        char temp=(char)strtoul(pEnd, &pEnd, 0x10);
                        if (temp==myposition)
                        {
                                if (foundoffset==0)
                                {
                                        foundoffset=offset;
                                }
                        }
                        else
                        {
                                pEnd=pattern;
                                if (foundoffset != 0)
                                        offset=foundoffset;
                                foundoffset=0;
                        }
                }
                else
                {
                 pEnd=&pEnd[2];
                }
                offset++;
                if (((DWORD)pEnd-(DWORD)pattern>=size)||(offset>=ende))
                        break;
        }
        return foundoffset;
} 


Execution:

PHP Code:

SearchPattern("55 8B EC 83 EC 18 83 3D x x x x 00 74 07 33 C0 E9 x x x x 8A 45 08",0x00400000,0x007FFFFF); 


I dont understand that:

PHP Code:

char &myposition=*(char*)offset; 


[bloodx]

this function search for the HEX code -> 55 8B EC 83 EC 18 83 3D x x x x 00 74 07 33 C0 E9 x x x x 8A 45 08

x = can be anything....

,0x00400000,0x007FFFFF = range from -> to

[Xorg]

Yeah I already know that, but dont understand how it works in details.
My problem is:

char &myposition=*(char*)offset;

What declares?

PHP Code:

char &myposition