php - Split a paragraph into 100 characters arrays -

i'm trying split paragraph 100 characters arrays. algorithm doesn't work...

in output first 1 100 characters. second 1 200, next 1 300 think...

    $desc = $this->getdescription();      $desc = preg_replace('/[^a-za-z0-9\s]/', ' ', strip_tags(html_entity_decode($desc)));     $desc = preg_replace('/(\s\s+|\t|\n)/', ' ', $desc);      $count = strlen($desc);     $time = ($count/100);      $x = 0;     $y = 100;       for($i = 0; $i<ceil($time);$i++){         $array[$i] = substr($desc,$x,$y);         $array[$i] = str_replace(" ", "+", $array[$i]);         $link[$i] = 'http://translate.google.com/translate_tts?tl=en&q=' . $array[$i];         $x+= 100;         $y+= 100;     } 

does know problem?

the output get:

where tried debug it...

characters: 100 |  x: 0 | y: 100 | |characters: 200 |  x: 100 | y: 200 | |characters: 300 |  x: 200 | y: 300 | |characters: 400 |  x: 300 | y: 400 | |characters: 422 |  x: 400 | y: 500 | |characters: 322 |  x: 500 | y: 600 | |characters: 222 |  x: 600 | y: 700 | |characters: 122 |  x: 700 | y: 800 | |characters: 22 |  x: 800 | y: 900 

$y length, , increasing 100 on every step of loop.

i recommend comment or delete line :

$y+= 100;