Test array performance in difference scenarios

test-array-performance-reference.php

<?php

require_once 'core/lib/Drupal/Core/Template/TwigReference.php';

use Drupal\Core\Template\TwigReference;

function getAttribute($val, $key) {
  //$_GLOBALS['ref'] = &$val[$key];
  return $val[$key];
}

function getContext($context, $key) {
//  $_GLOBALS['ref'] = $context[$key];
  return $context[$key];
}

function getContextReference($context, $key) {
  static $twig_reference;

  if (!isset($twig_reference)) {
    $twig_reference = new TwigReference();
  }

//  $_GLOBALS['ref'] = $context[$key];
  $ref = clone $twig_reference; 
  $ref->setReference($context[$key]);
  return $ref; //$context[$key];
//  return $context[$key];
}

function getContextReference2($context, $key) {
  $_GLOBALS['ref'] = &$context[$key];
  return $_GLOBALS['ref'];
}

function getAttribute2($val, $key) {
  $_GLOBALS['ref'] = &$val[$key];
  return $_GLOBALS['ref'];
}

function getContextVars($context, $keys) {
  $x = $context;
  foreach ($keys as $key) {
    $x=$x[$key];
  }
  return $x;
}

function getContextVars2($context, $key1, $key2) {
  $x = $context[$key1];
  $y = $x[$key2];
  return $y;
}

function getAttributeRef(&$ref, $key) {
  $ref=&$ref[$key];
}

function getContextRef(&$ref, $context, $key) {
  $ref = &$context[$key];
}

function &getAttributeRef2(&$ref, $key) {
  return $ref[$key];
}

function &getContextRef2($context, $key) {
  return $context[$key];
}


function hide(&$x) {
  $x['#hidden'] = TRUE;
}


$context['x']['y']['z']='hi';
 
$j=1;

for ( $i = 0; $i < 500000; $i++ )
{
  $context['x']['y'][$i]['data']=TRUE;
}

$time_start = microtime( true );

class X {
  private $state = null;

  public function getContext($context, $key) {
    $this->state = $context[$key];
    return $this;
  }

  public function getAttribute($key) {
    $this->state = $this->state[$key];
    return $this;
  }

  public function getValue() {
    return $this->state;
  }

  function getAttributeRef(&$ref, $key) {
    $ref=&$ref[$key];
  }

  function getContextRef(&$ref, $context, $key) {
    $ref = &$context[$key];
  }
}

$x = new X();

for ( $i = 0; $i < 100000; $i++ )
{

$j = $i;

//  $_x = $context['x'];
//  $y = getAttribute($_x, 'y');
  //$y = getAttribute(getContextReference($context, 'x'),'y');
//  $y = getAttribute2(getContextReference2($context, 'x'),'y');
//  $y = getAttribute(getContext($context, 'x'),'y');
//  $y = getContextVars2($context, 'x','y');
  //$y = $context['x']['y'];

//  getAttributeRef2(getAttributeRef2(getContextRef2($context, 'x'),'y'), $j);
/*
  $_tmp = getContextRef2($context, 'x');
  $_tmp = getAttributeRef2($_tmp, 'y');
  $_tmp = getAttributeRef2($_tmp, $j);
  hide($_tmp);
*/

  //$y = getAttribute(getContextReference($context, 'x'),'y');
  //$y = getAttribute2(getContextReference2($context, 'x'),'y');
  //$_tmp = getAttribute(getAttribute(getContextReference($context, 'x'),'y'), $j);

  $_tmp = getAttribute(getAttribute(getContext($context, 'x'),'y'), $j);
  hide($_tmp);

/*
  $_tmp=getContext($context, 'x');
  $_tmp=getAttribute($_tmp, 'y');
  $_tmp=getAttribute($_tmp, $j);
  hide($_tmp);
*/

/*
  getContextRef($_tmp, $context, 'x');
  getAttributeRef($_tmp, 'y');
  getAttributeRef($_tmp, $j);
  hide($_tmp);
*/

/*
  $_tmp = $x->getContext($context, 'x')->getAttribute('y')->getAttribute($j)->getValue();
  hide($_tmp);
*/

/*
  $x->getContextRef($_tmp, $context, 'x');
  $x->getAttributeRef($_tmp, 'y');
  $x->getAttributeRef($_tmp, $j);
  hide($_tmp);
*/

  //$_tmp=getContext($context, 'x');
  //$_tmp=getAttribute($_tmp, 'y');
  //$y = $_tmp;
}
 
// calculate total running time and output the result
$time_end = ( microtime( true ) - $time_start );
printf( "loop time: %fs\n",
    $time_end
);