Question

How to check whether a numbers are palindrome in base 10 and base 2 with PHP

Answer 1

function isBinaryRepresentationOfNumberPalindrome($n) {
    return decbin($n) == strrev(decbin($n));
}
 
function isPalindrome($n) {
    return $n == strrev($n);
}
 
          
$n = 585; // 1001001001
  
echo decbin($n) . "\n";
  
echo (isPalindrome($n) && isBinaryRepresentationOfNumberPalindrome($n) ? "Yes" : "No");
 
  
  
/*
run:
  
1001001001
Yes
  
*/

 

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