hexoutput() in PHP and C

// Function found at: http://www.theserverpages.com/scripts/
// Please leave this comment intact when using this code!
function hexoutput($data, $width=16) {
        $st=0;
        $txt="";
        $out="";
        for ($i=0; $i<strlen($data); $i++) {
                $n=ord(substr($data,$i,1));
                $c=str_pad(dechex($n),2,"0",STR_PAD_LEFT);
                $out.=$c." ";
		if ($n==32 || $n>32 && $n<127 || $n>160) {
                        $txt.=substr($data,$i,1);
                } else {
                        $txt.=".";
                }
                if ($i % $width == $width-1) {
                        $out.="| ".$txt."\n";
                        $txt="";
                }
        }
        $out.=str_repeat("   ",$width-($i % $width));
        $out.="| ".$txt;
        $out.="\n";
        return $out;
}

$data=fgets($fp,40960);
echo hexoutput($data);

00 6d 70 5f 68 6f 73 74 61 67 65 70 65 6e 61 6c | .mp_hostagepenal
74 79 00 31 33 00 6d 70 5f 61 75 74 6f 74 65 61 | ty.13.mp_autotea
6d 62 61 6c 61 6e 63 65 00 31 00 6d 70 5f 6d 61 | mbalance.1.mp_ma
78 72 6f 75 6e 64 73 00 30 00 6d 70 5f 72 6f 75 | xrounds.0.mp_rou
6e 64 74 69 6d 65 00 35 00 6d 70 5f 66 72 65 65 | ndtime.5.mp_free
7a 65 74 69 6d 65 00 32 00 6d 70 5f 63 34 74 69 | zetime.2.mp_c4ti
6d 65 72 00 34 35 00 6d 70 5f 6c 69 6d 69 74 74 | mer.45.mp_limitt
65 61 6d 73 00 32 00 6d 70 5f 74 65 61 6d 70 6c | eams.2.mp_teampl
61 79 00 30 00 6d 70 5f 66 72 61 67 6c 69 6d 69 | ay.0.mp_fraglimi
74 00 30 00 6d 70 5f 66 61 6c 6c 64 61 6d 61 67 | t.0.mp_falldamag
65 00 30 00 6d 70 5f 77 65 61 70 6f 6e 73 74 61 | e.0.mp_weaponsta
79 00 30 00 6d 70 5f 66 6f 72 63 65 72 65 73 70 | y.0.mp_forceresp

#include <stdio.h>
#include <string.h>

// Function found at: http://www.theserverpages.com/scripts/
// Please leave this comment intact when using this code!
void hexoutput(char *src, int len, int width) {
	if (len<0) return;
	if (width>32) width=32;
	unsigned char c;
	char buffer[33];
	int rem=0;
	int jb=0;

	int bwidth=width-1;

	buffer[width]=0x00;

	for (int i=0; i<len; i++) {
		c=src[i];
		if (c>=32 && c<127 || c>160) {
			buffer[jb++]=(char)c;
		} else {
			buffer[jb++]='.';
		}

		printf("%02X ",c);
		if ( i%width==bwidth ) {
			jb=0;
			printf("| %s\n",buffer);
		}
	}

	for (int i=(len % width); i<width; i++) {
		buffer[jb++]=' ';
		printf("   ",i);
	}
	printf("| %s\n",buffer);
}

int main() {
	char txt[]="Hi, how are you today?";
	hexoutput(txt, strlen(txt), 16);
	return 1;
}

48 69 2C 20 68 6F 77 20 61 72 65 20 79 6F 75 20 | Hi, how are you
74 6F 64 61 79 3F                               | today?