NYCPHP Meetup

[nycphp-talk] ${$variable}

Chris Snyder csnyder at chxo.com
Wed Aug 27 18:40:29 EDT 2003


Analysis & Solutions wrote:

>I just learned something interesting while confirming stuff:
>
>    $bar = 0;
>    if ($bar == '') {
>        echo '<br />bar equals empty';
>    }
>
>This comparison will evaluate to true, so the message will be printed.
>
>  
>
Which was really the whole point of this exercise -- but you dropped 
another hint there with the strict comparison operator (===).
In "standard" style this time:

    if ( isset($foo) ) {
        if ( $foo==='' ) {
            print "foo is an empty string.";
        }
    }

And that's all we really needed: a fine lesson in strict vs loose 
comparison.
http://www.php.net/manual/en/types.comparisons.php





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