Array_push Efficiency Test _php Tutorial

Use array[when assigning values to an array in PHP] This method is more efficient than Array_push (), and the following tests are available for various reasons
Test code:
1 2/**
3 * Array Performance test
4 *for Cycle has a performance impact, so it's useless.
5 * Test is to change the $count parameter (increment from 10~100000) and call method to refresh manually, recording time is average approximate time
6 **/
7
8 $count = 10;
9
Ten arrayTest01 ($count);
11
function arrayTest01 ($count) {
$arr = Array ();
$time = Microtime (true);
for ($i = 0; $i < $count; $i + +) {
$array [] = $i;
17}
Echo (Microtime (True)-$time);
19}
20
function arrayTest02 ($count) {
$arr = Array ();
$time = Microtime (true);
($i = 0; $i < $count; $i + +) {
Array_push ($arr, $i);
26}
Echo (Microtime (True)-$time);
28}
29
?>

Efficiency is probably array[] nearly a times, the test environment is Ubuntu 11 and Windows 7

Windows php-5.2.17/apache2.2
Times ($count) 10 100 1000
10000 100000 1000000

Array[] 2.31E-05 0.000104
0.000867 0.008417 0.043666
0.288323
Array_push 2.79E-05
0.000181 0.001614 0.014447
0.055875 0.491052
ubuntu11.04 PHP 5.3.6/apache2.2
Array[] 1.91E-05 7.70E-05
0.000726 0.007669 0.040492 Error

Array_push 2.50E-05
1.26E-04 0.001149 0.013714
0.056978 Error

This is the official website.
Note: If you use Array_push () to add a unit to an array, you might as well use $array [] =, because there is no additional burden of calling the function.
Website Link:
Http://cn.php.net/array_push

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