String to Array

[Prismatic]

My server sucks.

 

100k call * 10 benchmarking:

Crayon Test

Fatal error: Maximum execution time of 30 seconds exceeded in benchmark.php(19) : eval()'d code on line 1

[corbin]

Wow....  Xeons own my processor.  2.8ghz clock speed with 2 cores (PHP only uses 1 core if I remember correctly), but it takes 15 and 31 seconds.  (I would link you to my phpsysinfo page, but it's a personal computer that I would rather not show.....)

 

The interesting parts:

 

Processors 2

Model Intel® Pentium® D CPU 2.80GHz

CPU Speed 2.8 GHz

BUS Speed 200 Mhz

Cache Size 1024

 

Yeah, 200Mhz bus speed.  And yeah, Pentium D.  I hate Pentium D, by the way.

 

 

 

I'm quite surprised by how well yours scales.  To start with, I've always had stuck in my head that eval is slow.  Guess not ;p.  Also, I would have thought the implode would be slow, but I guess you only call it once, whereas my code has to make x iterations.  Also, in the deep depths of PHP's insides, I have no idea how memory management for arrays is handled.  For all I know, it could be taxing time wise to keep reallocating memory for arrays.

[sasa]

<?php
$test = 'Paths.Images.Icons';
$out = array();
foreach (array_reverse(explode('.',$test)) as $v) $out = array($v => $out);
print_r($out);
?>

[.josh]

look at sasa trying to mash a foreach into one line.  That's like a fat lady trying to wear spandex! For shame....

 

Here's your averages using same benchmark.  Looks like corbin's deals with smaller strings slightly faster, but yours scales slightly better than his. 

 

Sasa Test 3 layers

0.534427165985

0.534028053284

0.534690856934

0.536725997925

0.536411046982

0.536748886108

0.535420894623

0.533998012543

0.539067983627

0.536219120026

 

Sasa Test 10 layers

1.08157396317

1.08768081665

1.0953938961

1.08387899399

1.08178806305

1.07894706726

1.07972192764

1.10600399971

1.08545613289

1.08323502541

 

Sasa Test 100 layers

8.03103399277

8.07867789268

7.99266791344

8.03767514229

8.00496792793

8.02353405952

8.04677987099

8.03564500809

8.07798290253

8.08749604225

 

[corbin]

I'm perfectly happy being beaten by that genius snippet of code....

 

 

Never would have thought of that.  lol.

[.josh]

waveMagicWand(); // <--no need to pass anything, it just knows.

 

Magic Wand time:

0.00

0.00

-1 <--they said they needed it done by yesterday. Blam!

-1

0.01 <-- only because you blinked

0.00

[uniflare]

I'm interested to see how much faster this would be: (Since putting functions if loop statements gets executed each time )

 

 <?php
$test = 'Paths.Images.Icons';
$rVerse = array_reverse(explode('.',$test));

foreach ($rVerse as $v) $out = array($v => $out);

print_r($out);
?> 

 

maybe slightly faster?

[mister5317]

<?php
$test = 'Paths.Images.Icons';
$out = array();
foreach (array_reverse(explode('.',$test)) as $v) $out = array($v => $out);
print_r($out);
?>

 

Wow!  That is genus and so simple!

 

Also, I compared the two slightly different functions, see below.

<?php
// Sasa's Function
function strToNestedArray($string) {
   $out = array();
   foreach (array_reverse(explode('.',$string)) as $v) $out = array($v => $out);
   return $out;
}

// uniflare Function
function str_to_nested_array($string) {
  $rVerse = array_reverse(explode('.',$string));
  foreach ($rVerse as $v) $out = array($v => $out);
  return $out;
}

$str = "path.to.something.that.is.really.neat";

echo "100k call * 10 benchmarking: <br/><br/>";
echo "Sasa's Test<br/>";
for ($y = 0; $y < 10; $y++) {
$start = microtime(true);
for ($x = 0; $x < 100000; $x++) {
   $structure = strToNestedArray($str);
}
$time = microtime(true) - $start;
echo $time . "<br/>";
}

echo "<br/>uniflare 's Test<br/>";
for ($y = 0; $y < 10; $y++) {
$start = microtime(true);
for ($x = 0; $x < 100000; $x++) {
   $array = str_to_nested_array($str);
}
$time = microtime(true) - $start;
echo $time . "<br/>";
}

 

Here are the results:

100k call * 10 benchmarking:

 

Sasa's Test

0.581806898117

0.576666116714

0.580965995789

0.581721782684

0.580982923508

0.579081058502

0.579075813293

0.578878879547

0.578855037689

0.580253124237

 

uniflare's Test

0.655313968658

0.654915094376

0.655946016312

0.654715061188

0.655534029007

0.662548065186

0.647897958755

0.648191213608

0.6495449543

0.650224924088

 

I really appreciate everyone's help and snippets.  Thanks everyone!