Question

How to get the count of string 2 occurrence in string 1 without php built-in functions.

Example:

$strone = "Arun sukumar";
$strtwo = "a";

//Expected Output: 2


$strone = "Arun sukumar";
$strtwo = "uk";

//Expected Output: 1

I need to get the count without using any php built-in functions.

This is the question asked in a interview, is there any logic in that?

Answer 1

$strone = 'arun sukumar';
$strtwo = 'a';

echo parsestr($strone, $strtwo);

function parsestr($strone, $strtwo)
{
    $len = 0;
    while ($strtwo{$len} != '') {
        $len++;
    }

    $nr = 0;

    while ($strone{$nr} != '')
    {
        if($strone{$nr} != ' ')
        {
            $data[$nr] = $strone{$nr};
        }
        $nr++;
    }

    $newdata = $data;

    if($len > 1)
    {
        $newdata = array();
        $j = 0;
        foreach($data as $val)
        {
            $str .= $val;
            if($j == ($len -1))
            {
                $newdata[] = $str;
                $str = '';
                $j = 0;
            }
            else
                $j++;
        }
    }
    $i = 0;

    foreach($newdata as $val)
    {
        if($val == $strtwo)
        {
            $i++;
        }
    }
    return $i;
}