From: gk at proliberty dot com
Operating system: linux red hat 9
PHP version: 4.3.4
PHP Bug Type: Scripting Engine problem
Bug description: function_exists() returns false on static functions
Description:
------------
function_exists() returns false on static functions
method_exists() won't work without an instance of object
many times i have a deep class hierarchy and subclasses need to call
inherited static methods. instances of each ancestor class in the
hierarchy do not generally exist so method_exists() doesn't solve the
problem.
If this is not a bug but a feature request, then it is also a
documentation bug since the manual does not mention that function_exists()
does not work with class member functions, which are truly 'functions',
not 'methods'. 'method' assumes a class instance.
[EMAIL PROTECTED] test]$ php -v
PHP 4.3.2-RC (cli) (built: Apr 25 2003 18:03:38)
Reproduce code:
---------------
<?php
class a {
function a(){
}
function static_func(){
echo ("a::static_func() - the static function really exists!\n");
}
}
a::static_func();
$function_exists = function_exists("a::static_func") ? 'exists': 'does not
exist';
echo ("function_exists(\"a::static_func\") thinks that: \n");
echo("a::static_func() $function_exists\n");
$function_exists = function_exists("static_func") ? 'exists': 'does not
exist';
echo ("function_exists(\"static_func\") thinks that: \n");
echo("static_func() $function_exists\n");
?>
Expected result:
----------------
[EMAIL PROTECTED] test]$ php test.php
a::static_func() - the static function really exists!
function_exists("a::static_func") thinks that:
a::static_func() exists
function_exists("static_func") thinks that:
static_func() does not exist
Actual result:
--------------
[EMAIL PROTECTED] test]$ php test.php
a::static_func() - the static function really exists!
function_exists("a::static_func") thinks that:
a::static_func() does not exist
function_exists("static_func") thinks that:
static_func() does not exist
--
Edit bug report at http://bugs.php.net/?id=28211&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28211&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28211&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28211&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28211&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28211&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28211&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28211&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28211&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28211&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28211&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28211&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28211&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28211&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28211&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28211&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28211&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28211&r=float
