comp.lang.php archive
Re: global variables, Apache, PHP4.4.1Win32, WinXP
Date: Tue Jan 31 2006 - 23:55:28 CET
Jim Carlock wrote:
> How do I get a function to see a global variable without employing
> a parameter list?
>
> The source code:
>
> <html><head>
> <title>Simple Global Variable / Function Test</title>
> <?php
> $counter_file = "counter.txt"; // global variable
>
> //quickquote function
> function qq($sQuoteMe, $sQuoteChar) {
> return("$sQuoteChar$sQuoteMe$sQuoteChar");
> }
>
> function updatecount() {
> echo('<p>$counter_file = ' . "$counter_file</p>\n");
> }
> ?>
> </head>
> <body><?php
> echo('<p>$counter_file = ' . qq($counter_file, """) . "</p>\n");
> // echo('Hits: ' . qq("qq test", '"'));
> echo('<p>Hits: ' . qq(updatecount(), """) . "</p>\n");
> ?></body></html>
>
> ... echos the following HTML to the browser ...
>
> <html><head>
> <title>Simple Global Variable / Function Test</title>
> </head>
> <body><p>$counter_file = "counter.txt"</p>
> <p>Hits: ""</p>
> </body></html>
>
> Thanks.
>
> Jim Carlock
> Post replies to the newsgroup.
>
> P.S. (For the people at php.net)...
> The Zend Optimizer link on this page results in a 404 page. Search for
> "Zend Optimizer" on the following page:
> http://us3.php.net/downloads.php
Just use global $counter_file; in your function.
See http://uk2.php.net/global#language.variables.scope.global for its
uage.
The global keyword will basically open up the variable for use by your
function. An alternative would be to say something like:
$counter_file = $GLOBALS["counter_file"];
but that only creates a local copy. However,
$counter_file = &$GLOBALS["counter_file"];
creates a read/writable reference like the gloabl keyword. That way you
can call it whatever you like.
Received on Tue Feb 7 21:08:28 2006