Re: Whacky increment/assignment logic with $foo++ vs ++$foo
| From: | Andrew Ballard | Date: | Wed, 07 Oct 2009 20:00:03 +0000 |
| Subject: | Re: Whacky increment/assignment logic with $foo++ vs ++$foo | ||
| References: | 1 2 3 4 5 6 7 8 9 10 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-298747@lists.php.net to get a copy of this message | ||
On Wed, Oct 7, 2009 at 3:58 PM, Andrew Ballard <aballard@gmail.com> wrote:
> On Wed, Oct 7, 2009 at 3:42 PM, tedd <tedd.sperling@gmail.com> wrote:
>
>> However, what I find wacky about all of this is:
>>
>> for($i=1; $i<=10; $i++)
>> {
>> echo($i);
>> }
>>
>> and
>>
>> for($i=1; $i<=10; ++$i)
>> {
>> echo($i);
>> }
>>
>> Do exactly the same thing. I would have expected the first to print 1-10,
>> while the second to print 2-10, but they both print 1-10.
>>
>> Cheers,
>>
>> tedd
>>
>>
> Not wacky at all. Think of them both this way:
>
> <?php
> $i = 1;
> while ($i <= 10) {
> $i++;
> echo ($i);
> }
>
> // or
>
> $i = 1;
> while ($i <= 10) {
> ++$i;
> echo ($i);
> }
>
> ?>
>
> Andrew
>
oops. Flip the lines inside the while, but you get the idea.
$i = 1;
while ($i <= 10) {
echo $i;
$i++;
}
Andrew