Question

How to check if the length of a string is equal to the number appended at its end in PHP

Answer 1

function extractLastNumber($str) {
    $arr = preg_split('/\D+/', $str);
        
    return $arr[count($arr) - 1];
}

function stringLengthEqualToNumberAtEnd($str) {
    $numberatend = extractLastNumber($str);
    $numberatendlen = strlen($numberatend);

    return strlen($str) - $numberatendlen == $numberatend;
}

$str = "php programming15";

echo stringLengthEqualToNumberAtEnd($str) ? 'true' : 'false';



/*
run:

true

*/

 

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