How to find string length in php without using strlen() [closed]

Seems like an interviewer questioned you... Well you can use mb_strlen()

<?php
echo mb_strlen("Hello World");

(or)

Use this.. read it somewhere before on SO

<?php
echo array_sum(count_chars("Hello World"));

it might help you... not tested...

   $s = 'string';
   $i=0;
    while ($s[$i] != '') {
      $i++;
    }
    print $i;

You can use mb_strlen(), it will process Unicode strings.

Or use this function:

function get_string_length($string) {
  $i = 0;

  while ($string{$i} != '') {
    $i++;
  }

  return $i;
}

echo get_string_length('aaaaa'); // will echo 5

The solution is to use mb_strlen(). strlen() is broken for Unicode strings, anyway.

<?php
function mystrlen($str) {
     $count = 0;
     for ($i = 0; $i < 1000000; $i++) {
        if (@$str[$i] != "") {
            if (@$str[$i] == "a" || @$str[$i] == "b" || @$str[$i] == "c") {
                $count+=2;
            } else {
                $count++;
            }
        }
        else {
            break;
        }
    }
    return $count;
}

echo mystrlen("this is temporary but we made it complex");
?>