note 81177 added to function.in-array
| From: | ucffool at osu1 dot php dot net | Date: | Sun, 17 Feb 2008 07:51:07 +0000 |
| Subject: | note 81177 added to function.in-array | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-136216@lists.php.net to get a copy of this message | ||
@vidmantas
I had different results... Here is an example:
<?php
$array = array();
for ($x=1;$x <= 1000;$x++):
$array[] = mt_rand(100000,999999);
endfor;
$value = 123456;
$time=microtime(1);
if (in_array($value,$array)):
echo "Found! ";
else:
echo "Not found! ";
endif;
$time=number_format(microtime(1)-$time, 6);
echo "Time to complete: " . $time;
echo "<br />"; // -------------------------------------
$time=microtime(1);
$array2 = array_flip($array);
if (isset($array2[$value])):
echo "Found! ";
else:
echo "Not found! ";
endif;
$time=number_format(microtime(1)-$time, 6);
echo "Time to complete: " . $time;
?>
RESULT:
Not found! Time to complete: 0.000075
Not found! Time to complete: 0.000259
So I would say that on PHP5 at least, in_array seems to be more effective.
----
Server IP: 69.147.83.197
Probable Submitter: 71.229.228.181
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Manual Page -- http://www.php.net/manual/en/function.in-array.php
Edit -- https://master.php.net/note/edit/81177
Del: integrated -- https://master.php.net/note/delete/81177/integrated
Del: useless -- https://master.php.net/note/delete/81177/useless
Del: bad code -- https://master.php.net/note/delete/81177/bad+code
Del: spam -- https://master.php.net/note/delete/81177/spam
Del: non-english -- https://master.php.net/note/delete/81177/non-english
Del: in docs -- https://master.php.net/note/delete/81177/in+docs
Del: other reasons-- https://master.php.net/note/delete/81177
Reject -- https://master.php.net/note/reject/81177
Search -- https://master.php.net/manage/user-notes.php