note 77937 added to language.types.null
| From: | james at osu1 dot php dot net | Date: | Thu, 20 Sep 2007 15:25:41 +0000 |
| Subject: | note 77937 added to language.types.null | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-130633@lists.php.net to get a copy of this message | ||
A little speed test:
<?php
$v = NULL;
$s = microtime(TRUE);
for($i=0; $i<1000; $i++) {
is_null($v);
}
print microtime(TRUE)-$s;
print "<br>";
$s = microtime(TRUE);
for($i=0; $i<1000; $i++) {
$v===NULL;
}
print microtime(TRUE)-$s;
?>
Results:
0.017982006072998
0.0005950927734375
Using "===" is 30x quicker than is_null().
----
Server IP: 87.124.64.96
Probable Submitter: 82.39.155.185
----
Manual Page -- http://www.php.net/manual/en/language.types.null.php
Edit -- https://master.php.net/note/edit/77937
Del: integrated -- https://master.php.net/note/delete/77937/integrated
Del: useless -- https://master.php.net/note/delete/77937/useless
Del: bad code -- https://master.php.net/note/delete/77937/bad+code
Del: spam -- https://master.php.net/note/delete/77937/spam
Del: non-english -- https://master.php.net/note/delete/77937/non-english
Del: in docs -- https://master.php.net/note/delete/77937/in+docs
Del: other reasons-- https://master.php.net/note/delete/77937
Reject -- https://master.php.net/note/reject/77937
Search -- https://master.php.net/manage/user-notes.php