PHP 4.0 Bug #6719: Default argument values not working correctly when 0 is passed as a value
| From: | sasha at spuni dot is | Date: | Wed, 13 Sep 2000 21:51:20 +0000 |
| Subject: | PHP 4.0 Bug #6719: Default argument values not working correctly when 0 is passed as a value | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-33150@lists.php.net to get a copy of this message | ||
From: sasha@spuni.is
Operating system: Linux RedHat 6.2
PHP version: 4.0.2
PHP Bug Type: *General Issues
Bug description: Default argument values not working correctly when 0 is passed as a value
<?
function f($p = "all")
{
if ($p == "all")
{
print "if condition true, p = $p";
}
else
{
print "if condition false, p = $p";
}
print "<br>";
}
f();
f(0);
f(1);
?>
The output of this script is:
if condition true, p = all
if condition true, p = 0
if condition false, p = 1
and the problem is actually in second row generated
by function call f(0). In this case $p is 0 but
the condition $p == "all" is true!