By the way, it might be interresting to see what this does:
if (strlen($a)) {
print '$a is set';
} else {
print '$a is not set' . "\n";
}
$a= "";
if (strlen($a)) {
print '$a is set';
} else {
print '$a is not set' . "\n";
}
-----Original Message-----
From: Svensson, B.A.T. (HKG)
To: 'php-windows@xxxxxxxxxxxxx '
Sent: 2004-02-15 17:51
Subject: RE: isset() question
> Why doesn't the call to !isset() with the negation
> mark loads the nextpage when a name is not entered?
What do you get if you do:
if (isset($a)) {
print '$a is set';
} else {
print '$a is not set';
}
$a = "";
if (isset($a)) {
print '$a is set';
} else {
print '$a is not set';
}
You get:
F:\>c:\PHP\php -f test.php
$a is not set
$a is set
F:\>
Why? Becasue pointing to an empty string
is not the same as having no pointer at all.
Does this solve your problem?
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