note 94259 added to language.variables.scope
| From: | moraesdno at gmail dot com | Date: | Mon, 26 Oct 2009 01:17:53 +0000 |
| Subject: | note 94259 added to language.variables.scope | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-162091@lists.php.net to get a copy of this message | ||
Use the superglobal array $GLOBALS is faster than the global keyword. See:
//Using the keyword global
$a=1;
$b=2;
function sum() {
global $a, $b;
$a += $b;
}
$t = microtime(true);
for($i=0; $i<1000; $i++) {
sum();
}
echo microtime(true)-$t;
echo " -- ".$a."<br>";
//Using the superglobal array
$a=1;
$b=2;
function sum2() {
$GLOBALS['a'] += $GLOBALS['b'];
}
$t = microtime(true);
for($i=0; $i<1000; $i++) {
sum2();
}
echo microtime(true)-$t;
echo " -- ".$a."<br>";
----
Server IP: 69.147.83.197
Probable Submitter: 200.215.64.66
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Manual Page -- http://www.php.net/manual/en/language.variables.scope.php
Edit -- https://master.php.net/note/edit/94259
Del: integrated -- https://master.php.net/note/delete/94259/integrated
Del: useless -- https://master.php.net/note/delete/94259/useless
Del: bad code -- https://master.php.net/note/delete/94259/bad+code
Del: spam -- https://master.php.net/note/delete/94259/spam
Del: non-english -- https://master.php.net/note/delete/94259/non-english
Del: in docs -- https://master.php.net/note/delete/94259/in+docs
Del: other reasons-- https://master.php.net/note/delete/94259
Reject -- https://master.php.net/note/reject/94259
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