Re: Ternary operator performance improvements
| From: | Alain Williams | Date: | Mon, 17 Oct 2011 13:07:30 +0000 |
| Subject: | Re: Ternary operator performance improvements | ||
| References: | 1 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-55842@lists.php.net to get a copy of this message | ||
On Fri, Oct 14, 2011 at 08:08:56PM +0200, Arnaud Le Blanc wrote:
> Hi,
>
> I've already posted this patch and it has since been reviewed and improved.
> I'm re-posting it for discussion before eventually commiting it.
>
> The ternary operator always copies its second or third operand, which is very
> slow compared to an if/else when the operand is an array for example:
Is that why the following does not work as I expected:
$dbh = $how == 'r' ? (&$dbh_r) : (&$dbh_w);
$dbh is NOT a reference to $dbh_r or $dbh_w.
--
Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer.
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