Question

How to check if a number contains identical digits in PHP

Answer 1

function isNumberContainIdenticalDigits($num) {
    $str = strval($num);
    
    $set = array_unique(str_split($str));
     
    return count($set) === 1;
}
 
$num = 333333;
 
if (isNumberContainIdenticalDigits($num)) {
    echo "yes";
} else {
    echo "no";
}

 
 
/*
run:
 
yes
 
*/

 

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