Created
February 25, 2014 17:11
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array_rand() vs shuffle() - Benchmark
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<pre><?php | |
$arr = array( | |
array( | |
"image" => "", | |
"title" => "Open 7 days.", | |
"text" => "We’re open 7 days a week." | |
), | |
array( | |
"image" => "", | |
"title" => "Well done", | |
"text" => "Well done you done great." | |
), | |
array( | |
"image" => "", | |
"title" => "Rice", | |
"text" => "Various flavours" | |
), | |
array( | |
"image" => "", | |
"title" => "Rooms", | |
"text" => "Roomy rooms for a roomyful time" | |
), | |
array( | |
"image" => "", | |
"title" => "Keep in touch.", | |
"text" => "Stay in touchwith us as we'll miss you" | |
), | |
array( | |
"image" => "", | |
"title" => "Location", | |
"text" => "We'll show you where we are." | |
), | |
array( | |
"image" => "", | |
"title" => "The Home", | |
"text" => "See our home page" | |
) | |
); | |
for ($i=0; $i < 11; $i++) { | |
$arr = array_merge($arr, $arr); | |
} | |
printf("Our array contains %s elements\n", count($arr)); | |
// V1 | |
$start = microtime(1); | |
for ($i=0; $i < 10000; $i++) { | |
$result = array(); | |
foreach (array_rand($arr, 4) as $k) { | |
$result[] = $arr[$k]; | |
} | |
} | |
$end = microtime(1); | |
printf('V1 took %ss', round($end-$start, 3)); | |
echo "\n"; | |
// V2 | |
$start = microtime(1); | |
for ($i=0; $i < 10000; $i++) { | |
$result = array(); | |
shuffle($arr); | |
$result = array_slice($arr,0,4); | |
} | |
$end = microtime(1); | |
printf('V2 took %ss', round($end-$start, 3)); | |
/* | |
Results on my dev server: | |
Our array contains 14336 elements | |
V1 took 4.659s | |
V2 took 15.071s | |
*/ |
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cheers!
Our array contains 14336 elements V1 took 0.416s V2 took 4.934s