Posted by Michael Winter on 01/16/33 11:31

On 06/11/2005 17:54, X l e c t r i c wrote:

> sagejoshua wrote:

[snip]

>> <?php
>> $var1 = "foo";
>> ${$var1.bar} = "great!";
>> print $foobar;
>> // Outputs "great!"
>> ?>

[snip]

> Are you sure that outputs "great!" ?

[snip]

To elaborate on what Leif wrote, the variable variable constructed above
is made possible through string concatenation, similar to

var variable = 'foo';

this[variable + 'bar'] = 'Great!'; /* foobar = 'Great!'; */

in ECMAScript. However, rather than using a string literal, the OP has
written in bar what would normally considered a constant. Indeed, if
STRICT notices are enabled in PHP, this will be reported in the error log.

It would be better written as:

<?php
$variable = 'foo';
${$variable . 'bar'} = 'Great!';
print $foobar; /* Great! */
?>

Mike

--
Michael Winter
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