Re: return
| From: | Miguel Cruz | Date: | Mon, 01 Apr 2002 05:56:02 +0000 |
| Subject: | Re: return | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-90926@lists.php.net to get a copy of this message | ||
On Sun, 31 Mar 2002, Miguel Cruz wrote:
> On Mon, 1 Apr 2002, Jordan wrote:
>> Isnt there really no need for the 'return' though?
>
> Try this program and see what happens:
Ah, Rasmus brings up a good point. Try this one instead.
<?
function triple1($x) { $x = $x * 3; return $x; }
function triple2($x) { $x = $x * 3; }
function triple3($x) { global $x; $x = $x * 3; }
function triple4(&$x) { $x = $x * 3; }
$x = 5; $x = triple1($x) print '<p>triple1: ' . $x;
$x = 5; print '<p>triple1 return: ' . triple1($x);
$x = 5; $x = triple2($x) print '<p>triple2: ' . $x;
$x = 5; print '<p>triple2 return: ' . triple2($x);
$x = 5; $x = triple3($x) print '<p>triple3: ' . $x;
$x = 5; print '<p>triple3 return: ' . triple3($x);
$x = 5; $x = triple4($x) print '<p>triple4: ' . $x;
$x = 5; print '<p>triple4 return: ' . triple4($x);
?>
miguel