Which of the following two is faster? Only difference being an explicit array() initialization.
$fields['a'] = 1;
$fields['b'] = 2;
vs.
$fields = array();
$fields['a'] = 1;
$fields['b'] = 2;
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3Is this the slowest part of your code?Salman Arshad– Salman Arshad2013-01-08 08:36:45 +00:00Commented Jan 8, 2013 at 8:36
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2It does not make sense if you don't initialize it. Make codes logical.Raptor– Raptor2013-01-08 08:37:09 +00:00Commented Jan 8, 2013 at 8:37
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3 Answers
Instead of worrying about performance, you should be writing sensible, readable code. This is much better:
$fields = array();
$fields['a'] = 1;
$fields['b'] = 2;
compared to this:
$fields['a'] = 1;
$fields['b'] = 2;
You might save few fractions of a second of a machine; but you will definitely waste valuable time of the person who reads your code. He/she will will have to scroll through your code to locate where $fields is initialized and if it already contains some values.
1 Comment
Leri
When I have situations like this I prefer:
$fields = array('a' => 1, 'b' => 2);. It saves keystrokes and is easy to understand, IMO.Caution: These numbers vary from hardware to hardware
0.0000109672546386720 seconds without array();
VS
0.0000090599060058594 seconds with array(); (faster!)
But better with array(); Seems more logical.
1 Comment
Hanky Panky
@MarkBaker i did average of 100 Tests
Micro Benchmark does not make sense just focus on more readable code but for education purpose this is the fastest
$array = array('a' => 1,'b' => 2); // fastest PHP 5.4
$array = ['a' => 1,'b' => 2]; // fastest PHP 5.5
