RE: [PHP] Passing an array as an argument.
| From: | Ryan Gaul | Date: | Tue, 06 Feb 2001 18:24:33 +0000 |
| Subject: | RE: [PHP] Passing an array as an argument. | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-38409@lists.php.net to get a copy of this message | ||
try:
function process_members($asker_rank, $total_members, $email=array()) {
global $database_mysql;
mysql_select_db($database_mysql);
while (list ($key, $val) = each ($email)) {
echo "$key => $val<br>";
}
}
process_members($asker_rank, $total_members, $email);
Your original function declaration only has two variables passed to it. You
are passing three variables when you call the function.
What's happening is this:
function process_members($asker_rank, $email) {
global $database_mysql;
mysql_select_db($database_mysql);
while (list ($key, $val) = each ($email)) {
echo "$key => $val<br>";
}
}
process_members($asker_rank, $total_members, $email);
step one:
php sets $asker_rank (in function declaration) equal to $asker_rank
step two:
php sets $email (in function declaration) equal to $total_members
step three:
php ignores $email array passed to process_members()
step four:
php passes $email to each(). $email is set to the value
of $total_members, which is not an array, and chokes.
Using :
function process_members($asker_rank, $total_members, $email=array())
{
...
}
allows you to have a default value for $email. So you can either pass it or
not.
-----Original Message-----
From: April [mailto:april@farstrider.org]
Sent: Tuesday, February 06, 2001 12:18 PM
To: PHP General
Subject: [PHP] Passing an array as an argument.
How do you pass an array as an argument to a function?
My code (or at least the important parts):
function process_members($asker_rank, $email) {
global $database_mysql;
mysql_select_db($database_mysql);
while (list ($key, $val) = each ($email)) {
echo "$key => $val<br>";
}
}
######### This will display fine. #########
while (list ($key, $val) = each ($email)) {
echo "$key => $val<br>";
}
######### Doing the same thing with the function here returns this error,
though. ########
// Warning: Variable passed to each() is not an array or object in lib.inc
on line 447
process_members($asker_rank, $total_members, $email);
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