[PHP-DEV] possible bug with static variables?

[Greg Beaver]

Hi,
I have discovered some odd behavior with static variables, and wonder if 
it is a bug.  In both PHP4 and PHP5, the code below prints:

not registered, class pear_common
not registered, class archive_tar
I.e., because the PEAR function is called with $this->PEAR(), the static 
variable is reset as if the PEAR() function were re-defined!  Is this 
expected behavior?  I was under the impression that static declared a 
per-class static variable.

<?php
class PEAR {
    function PEAR($error_class = null)
    {
        static $registered = false;
        $classname = get_class($this);
        while ($classname && strcasecmp($classname, "pear")) {
            $destructor = "_$classname";
            if (method_exists($this, $destructor)) {
                if (!$registered) {
                    echo 'not registered, class ' . get_class($this) . 
"\n";
                    $registered = true;
                }
                break;
            }
        }
    }
}

class PEAR_Common extends PEAR
{
    function PEAR_Common()
    {
        $this->PEAR();
    }
    function _PEAR_Common()
    {
    }
}
class Archive_Tar extends PEAR
{
    function Archive_Tar()
    {
        $this->PEAR();
    }
    function _Archive_Tar()
    {
    }
}
$a = &new PEAR;
$b = &new PEAR_Common;
$c = &new Archive_Tar;
?>
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