Online PHP editor | perf for TBWkb

@ 2014-06-04T13:29:06Z

<?php

/*
Challenge 1: Modify Test::$secret before it's output.

Rules::
1. No use of Reflection API / runkit extension
2. No stopping execution before Test::run()
3. No Exceptions or PHP errors / warnings notices allowed

Hints:
1. Caesar
2. Magic methods
3. Requires a new feature of PHP 5.4

*/


class Test
{
    private $secret = 'Nyy lbhe Onfr ner orybat gb hf.';

    private $callback;

    final public function run()
    {
        call_user_func($this->callback);
        return $this->secret . PHP_EOL;
    }

    public function __set($k, $v)
    {
        $key = $v[($v[$v])]; // $v is some kind of weird array
        $value = $v(); // and a callback!
        $this->{$key} = $value;
    }

}


$test = new Test;

// start editing here

function decode($N,$alphabet,$msg){

  // Initialization

  $M = count($alphabet);
  $decrypt = array();
  $decode = array();

  $encrypted = preg_split("//",$msg, -1, PREG_SPLIT_NO_EMPTY);

  // Compute the decoding map
  $decode[' '] = ' ';
  foreach ($alphabet as $n=>$v){
    $decode[$v] = $alphabet[($M+($n-$N)) % $M];	  	// Compute the decoding map for $v
  }

  foreach ($encrypted as $v){
    $decrypt[] = $decode[$v];
  }

  return join('',$decrypt);
}

 $array = (array) $test;

        reset($array);
        $first_key = key($array);

        print_r($array[$first_key]);

//used this to figure out the count:
// http://rumkin.com/tools/cipher/caesar.php
$key = decode(13,25, $array[$first_key])


// end editing here

echo $test->run();

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.29	0.010	0.074	12.51
5.4.28	0.008	0.046	12.40
5.4.27	0.010	0.047	12.40
5.4.26	0.011	0.054	12.41
5.4.25	0.010	0.049	12.41
5.4.24	0.014	0.049	12.40
5.4.23	0.010	0.046	12.39
5.4.22	0.009	0.051	12.40
5.4.21	0.012	0.046	12.40
5.4.20	0.010	0.052	12.40
5.4.19	0.008	0.052	12.39
5.4.18	0.006	0.040	12.39
5.4.17	0.007	0.038	12.40
5.4.16	0.006	0.040	12.39
5.4.15	0.013	0.043	12.39
5.4.14	0.008	0.037	12.08
5.4.13	0.008	0.041	12.06
5.4.12	0.007	0.046	12.03
5.4.11	0.008	0.048	12.02
5.4.10	0.013	0.058	12.02
5.4.9	0.012	0.051	12.02
5.4.8	0.005	0.051	12.02
5.4.7	0.008	0.041	12.02
5.4.6	0.006	0.040	12.02
5.4.5	0.010	0.044	12.02
5.4.4	0.009	0.050	12.01
5.4.3	0.007	0.057	12.01
5.4.2	0.006	0.056	12.00
5.4.1	0.008	0.052	12.00
5.4.0	0.013	0.057	11.49
5.3.28	0.006	0.061	12.71
5.3.27	0.009	0.059	12.73
5.3.26	0.013	0.048	12.72
5.3.25	0.010	0.046	12.71
5.3.24	0.006	0.049	12.72
5.3.23	0.008	0.044	12.71
5.3.22	0.004	0.042	12.68
5.3.21	0.006	0.043	12.68
5.3.20	0.003	0.042	12.68
5.3.19	0.009	0.037	12.68
5.3.18	0.007	0.060	12.67
5.3.17	0.008	0.069	12.67
5.3.16	0.010	0.065	12.67
5.3.15	0.009	0.048	12.67
5.3.14	0.003	0.043	12.66
5.3.13	0.007	0.041	12.66
5.3.12	0.009	0.041	12.66
5.3.11	0.008	0.041	12.66
5.3.10	0.008	0.041	12.13
5.3.9	0.006	0.061	12.11
5.3.8	0.009	0.047	12.10
5.3.7	0.007	0.055	12.10
5.3.6	0.017	0.059	12.09
5.3.5	0.010	0.052	12.04
5.3.4	0.008	0.055	12.04
5.3.3	0.009	0.046	12.00
5.3.2	0.008	0.041	11.78
5.3.1	0.013	0.070	11.74
5.3.0	0.025	0.115	11.73

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