Script, which checks parity bits, decodes binary to ascii, and puts * for corrupted bytes | http://sandbox.onlinephpfunctions.com/code/5ee7ce353ca66583ab52b6e21b5e4f4326a8608d

parity_bit.php

<?php
// Available for test at http://sandbox.onlinephpfunctions.com/code/5ee7ce353ca66583ab52b6e21b5e4f4326a8608d
$ins = [
	'01010011 01001111 11001100 01000001 01010010 11001001 01010011',
	'11010111 11001001 11001110 01000100 01001111 11010111 01010011',
	'01000111 01001111 11001111 11000111 11001100 11000101',
	'11011001 01000001 01001110 11000100 11000101 11011000',
	'01000001 11001101 01000001 01011010 11001111 11001110'
];

echo "---\n";
foreach ($ins as $in) {
	foreach (explode(' ', $in) as $n) {
		echo $n;
		if (array_sum($n = str_split($n))%2 === 0) {
			array_shift($n);
			$n = implode('', $n);
			echo ' = ' . dechex(bindec($n)) . ' ---> ' . chr(bindec($n));
		}
		else echo ' --------> *';
		echo "\n";
	}
	echo "---\n";
}

parity_bit_html_version.php

<?php

$ins = [
	'01010011 01001111 11001100 01000001 01010010 11001001 01010011',
	'11010111 11001001 11001110 01000100 01001111 11010111 01010011',
	'01000111 01001111 11001111 11000111 11001100 11000101',
	'11011001 01000001 01001110 11000100 11000101 11011000',
	'01000001 11001101 01000001 01011010 11001111 11001110'
];

echo '<hr>';
foreach ($ins as $in) {
	foreach (explode(' ', $in) as $n) {
		echo $n;
		if (array_sum($n = str_split($n))%2 === 0) {
			array_shift($n);
			$n = implode('', $n);
			echo ' = ' . dechex(bindec($n)) . ' ---> ' . chr(bindec($n));
		}
		else echo ' --------> 0';
		echo '<br>';
	}
	echo '<hr>';
}