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PHP: array to object
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| <?php | |
| # Simple loop copy | |
| function loop_copy($array) { | |
| $object = new stdClass(); | |
| foreach ($array as $key => $value) { | |
| $object->$key = $value; | |
| } | |
| } | |
| # leveraging json_decode + json_encode | |
| function json_copy($array) { | |
| json_decode(json_encode($array), FALSE); | |
| } | |
| # http://pear.php.net/package/Benchmark/ | |
| # http://pear.php.net/package/Benchmark/docs/1.2.9/Benchmark/Benchmark_Timer.html | |
| require 'Benchmark/Timer.php'; | |
| # prepare the arrays to be copied | |
| $sizes = array(5, 20, 100, 500); | |
| $arrays = array(); | |
| foreach ($sizes as $size) { | |
| $array = array(); | |
| $i = $size; | |
| while ($i-- >= 0) { | |
| $key = uniqid('key'); | |
| $array[$key] = uniqid('value'); | |
| } | |
| $arrays[] = $array; | |
| } | |
| # Prepare timer and iterations | |
| $itera = array(100, 500, 1000); | |
| foreach ($itera as $i) { | |
| foreach ($arrays as $array) { | |
| $array_len = count($array); | |
| $timer = new Benchmark_Timer(TRUE); | |
| $x = $i; | |
| while ($x-- >= 0) { | |
| json_copy($array); | |
| } | |
| $timer->setMarker("json_copy with $i copies of array size $array_len"); | |
| $x = $i; | |
| while ($x-- >= 0) { | |
| loop_copy($array); | |
| } | |
| $timer->setMarker("loop_copy with $i copies of array size $array_len"); | |
| $timer->display(); | |
| } | |
| } |
@metalmatze these are the results from my Macbook 2,2 w/ PHP 5.3.15 (i7 @ 2.2Ghz)
----------------------------------------------------------------------------------------
marker time index ex time perct
----------------------------------------------------------------------------------------
Start 1378258964.24351800 - 0.00%
----------------------------------------------------------------------------------------
json_copy with 100 copies of array size 6 1378258964.24449400 0.000976 79.16%
----------------------------------------------------------------------------------------
loop_copy with 100 copies of array size 6 1378258964.24472600 0.000232 18.82%
----------------------------------------------------------------------------------------
Stop 1378258964.24475100 0.000025 2.03%
----------------------------------------------------------------------------------------
total - 0.001233 100.00%
----------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------
marker time index ex time perct
-----------------------------------------------------------------------------------------
Start 1378258964.24495700 - 0.00%
-----------------------------------------------------------------------------------------
json_copy with 100 copies of array size 21 1378258964.24794700 0.002990 81.34%
-----------------------------------------------------------------------------------------
loop_copy with 100 copies of array size 21 1378258964.24862200 0.000675 18.36%
-----------------------------------------------------------------------------------------
Stop 1378258964.24863300 0.000011 0.30%
-----------------------------------------------------------------------------------------
total - 0.003676 100.00%
-----------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
marker time index ex time perct
------------------------------------------------------------------------------------------
Start 1378258964.24883700 - 0.00%
------------------------------------------------------------------------------------------
json_copy with 100 copies of array size 101 1378258964.26249600 0.013659 82.24%
------------------------------------------------------------------------------------------
loop_copy with 100 copies of array size 101 1378258964.26543100 0.002935 17.67%
------------------------------------------------------------------------------------------
Stop 1378258964.26544600 0.000015 0.09%
------------------------------------------------------------------------------------------
total - 0.016609 100.00%
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
marker time index ex time perct
------------------------------------------------------------------------------------------
Start 1378258964.26563400 - 0.00%
------------------------------------------------------------------------------------------
json_copy with 100 copies of array size 501 1378258964.33470900 0.069075 82.69%
------------------------------------------------------------------------------------------
loop_copy with 100 copies of array size 501 1378258964.34914800 0.014439 17.29%
------------------------------------------------------------------------------------------
Stop 1378258964.34916700 0.000019 0.02%
------------------------------------------------------------------------------------------
total - 0.083533 100.00%
------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------
marker time index ex time perct
----------------------------------------------------------------------------------------
Start 1378258964.34941700 - 0.00%
----------------------------------------------------------------------------------------
json_copy with 500 copies of array size 6 1378258964.35392300 0.004506 78.58%
----------------------------------------------------------------------------------------
loop_copy with 500 copies of array size 6 1378258964.35513400 0.001211 21.12%
----------------------------------------------------------------------------------------
Stop 1378258964.35515100 0.000017 0.30%
----------------------------------------------------------------------------------------
total - 0.005734 100.00%
----------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------
marker time index ex time perct
-----------------------------------------------------------------------------------------
Start 1378258964.35527000 - 0.00%
-----------------------------------------------------------------------------------------
json_copy with 500 copies of array size 21 1378258964.36951100 0.014241 80.84%
-----------------------------------------------------------------------------------------
loop_copy with 500 copies of array size 21 1378258964.37286600 0.003355 19.04%
-----------------------------------------------------------------------------------------
Stop 1378258964.37288700 0.000021 0.12%
-----------------------------------------------------------------------------------------
total - 0.017617 100.00%
-----------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
marker time index ex time perct
------------------------------------------------------------------------------------------
Start 1378258964.37306300 - 0.00%
------------------------------------------------------------------------------------------
json_copy with 500 copies of array size 101 1378258964.43979100 0.066728 82.40%
------------------------------------------------------------------------------------------
loop_copy with 500 copies of array size 101 1378258964.45402100 0.014230 17.57%
------------------------------------------------------------------------------------------
Stop 1378258964.45404100 0.000020 0.02%
------------------------------------------------------------------------------------------
total - 0.080978 100.00%
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
marker time index ex time perct
------------------------------------------------------------------------------------------
Start 1378258964.45423700 - 0.00%
------------------------------------------------------------------------------------------
json_copy with 500 copies of array size 501 1378258964.78209200 0.327855 82.23%
------------------------------------------------------------------------------------------
loop_copy with 500 copies of array size 501 1378258964.85294000 0.070848 17.77%
------------------------------------------------------------------------------------------
Stop 1378258964.85296100 0.000021 0.01%
------------------------------------------------------------------------------------------
total - 0.398724 100.00%
------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------
marker time index ex time perct
-----------------------------------------------------------------------------------------
Start 1378258964.85311400 - 0.00%
-----------------------------------------------------------------------------------------
json_copy with 1000 copies of array size 6 1378258964.86216500 0.009051 79.37%
-----------------------------------------------------------------------------------------
loop_copy with 1000 copies of array size 6 1378258964.86450800 0.002343 20.55%
-----------------------------------------------------------------------------------------
Stop 1378258964.86451700 0.000009 0.08%
-----------------------------------------------------------------------------------------
total - 0.011403 100.00%
-----------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
marker time index ex time perct
------------------------------------------------------------------------------------------
Start 1378258964.86468300 - 0.00%
------------------------------------------------------------------------------------------
json_copy with 1000 copies of array size 21 1378258964.89393300 0.029250 81.97%
------------------------------------------------------------------------------------------
loop_copy with 1000 copies of array size 21 1378258964.90034600 0.006413 17.97%
------------------------------------------------------------------------------------------
Stop 1378258964.90036600 0.000020 0.06%
------------------------------------------------------------------------------------------
total - 0.035683 100.00%
------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------
marker time index ex time perct
-------------------------------------------------------------------------------------------
Start 1378258964.90060900 - 0.00%
-------------------------------------------------------------------------------------------
json_copy with 1000 copies of array size 101 1378258965.03739800 0.136789 82.91%
-------------------------------------------------------------------------------------------
loop_copy with 1000 copies of array size 101 1378258965.06556800 0.028170 17.08%
-------------------------------------------------------------------------------------------
Stop 1378258965.06558600 0.000018 0.01%
-------------------------------------------------------------------------------------------
total - 0.164977 100.00%
-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------
marker time index ex time perct
-------------------------------------------------------------------------------------------
Start 1378258965.06592200 - 0.00%
-------------------------------------------------------------------------------------------
json_copy with 1000 copies of array size 501 1378258965.71811300 0.652191 81.86%
-------------------------------------------------------------------------------------------
loop_copy with 1000 copies of array size 501 1378258965.86263200 0.144519 18.14%
-------------------------------------------------------------------------------------------
Stop 1378258965.86266200 0.000030 0.00%
-------------------------------------------------------------------------------------------
total - 0.796740 100.00%
-------------------------------------------------------------------------------------------
A small note must be done here: loop_copy($array) is not recursive, while the json_copy($array) is.
If we change line #7 from
$object->$key = $value
into
$object->$key = (is_array($value) ? loop_copy($value) : $value)
Then the loop_copy will be recursive. Correct me If I'm wrong.
You'd have to make a few other changes to make it truly recursive (ie, handle is_object($value) too) but yeah -- could totally make it recursive
That said bear in mind :)
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Could you post some results for this?