Re: a shortcut to set variable
| From: | Richard Quadling | Date: | Tue, 12 Apr 2011 13:34:10 +0000 |
| Subject: | Re: a shortcut to set variable | ||
| References: | 1 2 3 4 5 6 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-312354@lists.php.net to get a copy of this message | ||
On 12 April 2011 14:25, tedd <tedd.sperling@gmail.com> wrote:
> At 12:47 PM +0100 4/12/11, Richard Quadling wrote:
>>
>> Putting () around ternary's is a "best practise".
>>
>> <?php
>> echo 'Are we ready to go? ', isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.', ' Ready state completed', PHP_EOL;
>> $go = true;
>> echo 'Are we ready to go? ', isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.', ' Ready state completed', PHP_EOL;
>> ?>
>>
>> vs.
>>
>> <?php
>> echo 'Are we ready to go? ' . isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.' . ' Ready state completed' . PHP_EOL;
>> $go = true;
>> echo 'Are we ready to go? ' . isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.' . ' Ready state completed' . PHP_EOL;
>> ?>
>>
>> vs.
>>
>> <?php
>> echo 'Are we ready to go? ' . (isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.') . ' Ready state completed' . PHP_EOL;
>> $go = true;
>> echo 'Are we ready to go? ' . (isset($go) ? 'Yes we are.' : 'No we
>> are
>> not.') . ' Ready state completed' . PHP_EOL;
>> ?>
>>
>> Don't run them just yet.
>>
>> Can you quickly and easily see the output?
>
> Argg! :-)
>
> $ready = 'Are we ready to go? ';
> $yes = 'Yes we are.';
> $no = 'No we are not.'
>
> echo($ready);
> echo(isset($go) ? $yes : $no);
>
>
> Cheers,
>
> tedd
>
>
> --
> -------
> http://sperling.com/
>
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>
Tedd,
echo is a construct and the () are not required. ;-p
The purpose of the code was not to demonstrate any particular coding
style, but what happens if you use a ternary without () around it.
Without running the code, can you say what the output will be in the 3 examples?
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY