PHP Hexadecimal input string must have an even length

i have a script the parse out the hexa parameters ?aa=[Hexa] from a file and print that parsed data using after convert it using hex2bin

$text[] = hex2bin($val[1]);

the problem is i getting an error
PHP Warning: hex2bin(): Hexadecimal input string must have an even length in line 11
Line 11: $text[] = hex2bin($val[1]);




the file that have the data has a lot of lines

the script work only when the script has lines that contain the hexa parameters like this
can anyone help me

 

Why did you remove your question from stack overflow? You probably would've got faster answers there IMO.

How are those inputs created? It seems to be that the data is malformed which have to be corrected.

 

thanks for replay,
i removed it for some reason,
anyway, i will show you what this script doing
basically there's a log file contains a referrer urls, and the urls has a parameter ?aa=[HEXA] and i try to make this script parse out that hexa values from the parameter aa in the urls


but after parsing that parameters and convert that hexa to string using $text[] = hex2bin($val[1]);
i got that error

here's the important code


$pos = strpos($val[1], '"');
$val[1] = substr($val[1], 0, $pos);
$text[] = hex2bin($val[1]);

}
fclose($file);
$text = array_reverse($text);
$text = array_unique($text);
$text = array_merge($text);
$count = count($text);
for ($x=0;$x<$count;$x++){
$final[$x] = array('value' => "$text[$x]" );
}
echo json_encode($final);

 

You will need to check where the hex code is being generated and fix it there.

 

Hex needs to have 16 integers (base 16) ranging from 0 to F. Your error suggests there's an odd number of integers, any odd number not equalling 16 from the first two lines highlighted above. Simple thing to do here is to echo the string out, echo $val[1]; and count the output integers rendered.

From there you should be able to fix the problem by correcting strpos and substr respectively.


.

 

T

thanks for replay
can you correct the code for me , i'm new to programming

thank you