How can the modulo operation be utilized effectively in PHP for converting decimal numbers to binary?

To convert a decimal number to binary in PHP, the modulo operation can be used effectively to extract the remainders at each step of division by 2. By repeatedly dividing the decimal number by 2 and keeping track of the remainders, the binary representation can be constructed in reverse order. Finally, reversing the order of the remainders will give the binary equivalent of the decimal number. 

function decimalToBinary($decimal) {
    $binary = '';
    
    while ($decimal > 0) {
        $remainder = $decimal % 2;
        $binary = $remainder . $binary;
        $decimal = (int)($decimal / 2);
    }
    
    return $binary;
}

$decimalNumber = 25;
$binaryNumber = decimalToBinary($decimalNumber);
echo "Binary representation of $decimalNumber is: $binaryNumber";

Keywords

modulo operation PHP decimal numbers binary conversion bitwise operations

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