PHP Initial (6)-Array add element

PHP notes (6)-Array add element

Today I learned a new way to add an element to the PHP array.

Previously always added with the push () function:

$arr = Array (); Array_push ($arr, El1, El2 ... ELN);

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But in fact there is a more direct and convenient approach:

$arr = Array (); $arr [] = El1; $arr [] = El2; ... $arr [] = ELN;

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And experiments have proved that the second method is more efficient than the first method is nearly one times higher!

Let's take a look at the following example:

$t = Microtime (true); $array = Array (); for ($i = 0; $i < 10000; $i + +) {     $array [] = $i;} print Microtime (true)-$t; print '
'; $t = Microtime (true); $array = Array (); for ($i = 0; $i < 10000; $i + +) {     Array_push ($array, $i);} print Microtime (true)-$t;

Run the script with the result:

? wrote

Run 1
0.0054171085357666//Array_push
0.0028800964355469//array[]
Run 2
0.0054559707641602//Array_push
0.002892017364502//array[]
Run 3
0.0055501461029053//Array_push
0.0028610229492188//array[]

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It's really a long time.

