Question

How to check if a number is a repdigit number (a natural number composed of repeated digits) in PHP

Answer 1

function isRepdigitNumber($num) {
    $array = str_split(strval($num));
 
    $combine = array_combine($array, $array);
 
    return count($combine) == 1;    
}

$num = 8888888;
   
if (isRepdigitNumber($num)) {
    echo "yes";
} else {
    echo "no";
}

 
 
/*
run:
   
yes
   
*/

 

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