Does PHP also perform shallow copy-on-write for values passed as parameters to functions?
<?php $text = "<...shakespeare...>"; function blah( $copy ) { echo $copy; } blah( $text ); ?> Some of the guys I work with like to use: function( &$copy ) in order to save the hypothetical storage space required to duplicate $text into $copy, but from earlier discussion, blah() might not get a full copy of $text unless the function body was: $copy .= '!';, thus making two copies of $text. It's almost time for me to start downloading the source tarballs and answering these questions myself. ;^) Thanks again for all your patience. --Robert On Fri, 25 Jan 2002 15:48:54 -0600, Christian Dickmann wrote: > "Andi Gutmans" <[EMAIL PROTECTED]> wrote >> PHP 5 per-class constants can already except static arrays such as >> array(1, 2, 3) as their value. I'll put the issue of global constants >> on my TODO and believe PHP 5 will also support these for global >> constants. However, you won't be able to create a constant with a >> non-constant value such as $_GET as this goes against the whole idea of >> constant :) > > This is not true to my mind. > define ("INC_DIR",$foo); > this "Constant" is not predefined by the developer, BUT it is a > constant-value for the rest of the script. To my mind such "constants" > make sense, because > - they are global > - they can't change their value while execution - it doesn't matter if > the constant-value is set dynamically when defining it So I would be > glad to see this feature in PHP5. -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]