<?php
class paragraph {
  private $str="";
  function paragraph($str) {
    $this->str = $str;
  }
  function count_words() {
    return sizeof(explode(" ",$this->str));
  }
  function count_chars() {
    return strlen($this->str);
  }
  function count_ints() {
    $i=0;
	foreach(str_split($this->str) as $key => $value) {
	  if(is_numeric($value)) $i++;
	}
	return $i;
  }
  function str_type() {
	if(is_string($this->str)) return "string";
	elseif(is_int($this->str)) return "int";
	elseif(is_numeric($this->str)) return "numeric";
	elseif(is_float($this->str)) return "floar";
	else return false;
  }
  function cap_letter($letter=0) {
    $str = str_split($this->str);
	if($letter<=sizeof($str)) {
	  if(strtoupper($str[$letter])) {
	    $this->str = implode($str);
		return $this->str;
	  }
	  else {
	  	return false;
	  }
	}
	else {
	  return false;
	}
  }
  function get_chars($str) {
    $str = str_split($str);
    $chars = array();
    foreach($str as $key1 => $value1) {
      foreach($chars as $key2 => $value2) {
  	    if($value1!=$value2) {
  	      $chars[] = $value1;
	    }
	  }
    }
    return $chars;
  }
}
?>