Question

How to check if the binary representation of a number is a palindrome in PHP

Answer 1

function isPalindrome($n) {
    return decbin($n) == strrev(decbin($n));
}
        
$n = 27;

echo decbin($n) . "\n";

echo ((isPalindrome($n) ? "Yes" : "No"));





/*
run:

11011
Yes

*/

 

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