<?php
/**********************************************************************
  Comparison on performance of getCharArray functions
  getCharArray returns an array of UTF-8 characters

  Pau Sanchez (contact@pausanchez.com)
  
  For more information visit:
    http://www.codigomanso.com/en/
**********************************************************************/
include ('OFC/OFC_Chart.php');

function getCharArray1 ($jstring)
{
  $len = mb_strlen ($jstring, 'UTF-8');
  if (mb_strlen ($jstring, 'UTF-8') == 0)
    return array();

  $ret = array();
  for ($i = 0; $i < $len; $i++) {
    $char = mb_substr ($jstring, $i, 1, 'UTF-8');
    array_push ($ret, $char);
  }

  return $ret;
}

function getCharArray2 ($jstring)
{
  $len = mb_strlen ($jstring, 'UTF-8');
  if (mb_strlen ($jstring, 'UTF-8') == 0)
    return array();

  while ($len) {
    $ret[]  = mb_substr($jstring,0,1,"UTF-8");
    $jstring = mb_substr($jstring,1,$len,"UTF-8");
    $len = mb_strlen($jstring);
  }
  return $ret;
}

function getCharArray3 ($jstring)
{
  if (mb_strlen ($jstring, 'UTF-8') == 0)
    return array();

  $ret  = array ();
  $alen = strlen ($jstring);
  $char = '';
  for ($i = 0; $i < $alen; $i++) {
    $char .= $jstring[$i];
    if (mb_check_encoding ($char, 'UTF-8')) {
      array_push ($ret, $char);
      $char = '';
    }
  }
  
  return $ret;
}

// Make a huge string (2^8 = 256 times)
$str = "焼肉はある意味戦争。固いホルモン噛（か）んでいるうちに、ほかのお肉を食べられちゃう危険性もある。飲み込んじゃっていい";
for ($i = 0; $i < 8; $i++) { $str .= $str; }

$data1 = array();
$data2 = array();
$data3 = array();

$basestr = $str;
for ($total = 1; $total < 20; $total+=2)
{
  $repeat = $total;

  $start = microtime (true);
  for ($i = 0; $i < $repeat; $i++) {
    getCharArray1 ($str);
  }
  $end = microtime (true);
  $data1[] = (float)sprintf ("%.3f", ($end - $start));
  
  $start = microtime (true);
  for ($i = 0; $i < $repeat; $i++) {
    getCharArray2 ($str);
  }
  $end = microtime (true);
  $data2[] = (float)sprintf ("%.3f", ($end - $start));
  
  $start = microtime (true);
  for ($i = 0; $i < $repeat; $i++) {
    getCharArray3 ($str);
  }
  $end = microtime (true);
  $data3[] = (float)sprintf ("%.3f", ($end - $start));
}

$line1 = new OFC_Charts_Line();
$line1->set_width (1);
$line1->set_colour ('#FF0000');
$line1->set_dot_size (3);
$line1->set_values ($data1);

$line2 = new OFC_Charts_Line();
$line2->set_width (1);
$line2->set_colour ('#00FF00');
$line2->set_dot_size (3);
$line2->set_values ($data2);

$line3 = new OFC_Charts_Line();
$line3->set_width (1);
$line3->set_colour ('#0000FF');
$line3->set_dot_size (3);
$line3->set_values ($data3);


$y = new OFC_Elements_Axis_Y();
$y->set_range (0, 10, 1);

$x = new OFC_Elements_Axis_X();
$x->set_range (0, 10, 1);

$chart = new OFC_Chart();
$chart->set_title (new OFC_Elements_Title('getCharArray Performance'));
$chart->set_y_axis ($y);
$chart->set_x_axis ($x);

$chart->add_element( $line1 );
$chart->add_element( $line2 );
$chart->add_element( $line3 );

echo $chart->toPrettyString();