[PHP-NOTES] note 130352 added to function.microtime

The following tests execute with PHP 8.3.20

$start = microtime(true);
for ($i = 0; $i < 10000000; $i++) {
$temp = 3 ** 1000;
}
$end = microtime(true);
echo "Exec time = " . ($end - $start) . " Second(s)" . PHP_EOL;
}

>> Exec time = 0.047096014022827 Second(s)

===

$start = microtime(true);
for ($i = 0; $i < 10000000; $i++) {
$temp = pow(3, 1000);
}
$end = microtime(true);
echo "Exec time = " . ($end - $start) . " Second(s)" . PHP_EOL;
}

Exec time = 0.41157102584839 Second(s)
----
Server IP: 45.112.84.4
Probable Submitter: 80.90.5.137 (proxied: 210.61.66.43)
----
Manual Page -- https://php.net/manual/en/function.microtime.php
Edit        -- https://main.php.net/note/edit/130352
Del: integrated  -- https://main.php.net/note/delete/130352/integrated
Del: useless     -- https://main.php.net/note/delete/130352/useless
Del: bad code    -- https://main.php.net/note/delete/130352/bad+code
Del: spam        -- https://main.php.net/note/delete/130352/spam
Del: non-english -- https://main.php.net/note/delete/130352/non-english
Del: in docs     -- https://main.php.net/note/delete/130352/in+docs
Del: other reasons-- https://main.php.net/note/delete/130352
Reject      -- https://main.php.net/note/reject/130352
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