By Webcreature on

I have an error after upgrading from 5.2 to 5.3. The server is running Apache/PHP5.

There is no error on my test system which is running Apache/PHP4.

The message on the PHP5 server sounds like

warning: array_merge() [function.array-merge]: Argument #1 is not an array in /srv/www/vhosts/oekoportal.net/subdomains/test/httpdocs/includes/menu.inc on line 415.

The line in MENU.INC is

$arguments = array_merge( $arguments, explode('/', $arg));

It seems as if $arguments is in some cases an array in some not. PHP4 was more tolerant in acting with array_merge() an accepted non-array parameters. This was changed in PHP5 with giving a message with a critical error.

After changing the line above to

$arguments = array_merge( (array) $arguments, explode('/', $arg));

it is secured that the parameter is an array and the error message is gone.

Maybe this hint may help those who have the same problem I had.

Best wishes to all Drupal developers.

⋅ Categories: Drupal 5.x

Comments

vito_swat’s picture

vito_swat commented

Send it as an issue. Noone interested will see it in forums.

Vito

geo_ego’s picture

geo_ego commented

I had this error when I moved to PHP 5.1 from 4.x. According to http://ca.php.net/manual/tr/migration5.incompatible.php array_merge() in PHP 5 was changed to accept only arrays.

PHP 5 starts trowing this warning message about /includes/menu.inc line 415 if in your hook_menu() there are callback arguments defined like this: 

'callback arguments' => 'some_value',

Replacing those lines with 

'callback arguments' => Array('some_value'),

fixed the problem.

Please note: in order to see effect of this change you have to temporarily comment out all $may_cache conditions in your hook_menu() to refresh cached menus. Otherwise that warning won't disappear until menu cache expires. After first run, DO NOT forget to remove comments around $may_cache.