Weird, can't reproduce this at all:

$ php -r 'error_reporting(E_ALL); $x = array("a",array("x","y"),"b"); natsort($x);'
Command line code(1) : Notice - Array to string conversion
Command line code(1) : Notice - Array to string conversion

Even with 4.1.2 on another machine no esegfault, just the warnings.

Me neither, can you try RC1 from www.php.net/~derick ?

Derick

Derick,
	I am now using RC1 from your page, and I still get the error.
	Here are my compile options:

'./configure' '--prefix=/usr' '--with-mysql=/usr' '--with-apxs=/usr/sbin/apxs' 
'--enable-gd=/usr/lib/gd-1.8.4' '--enable-ftp'

	I believe I've found what causes it. If I create a multi-dimensional that has a sub-array at either 
the beginning or end, the engine does not crash:


[root@anarchy.ma.cx]-[~]$ php -r 'error_reporting(E_ALL); $x = array(array(),"c","b","a"); natsort($x); 
print_r($x);';
Array
(
    [0] => Array
        (
        )

    [3] => a
    [2] => b
    [1] => c
)


	The engine doesn't seggfault. However, if I create a multi-dimensional array with a sub-array 
anywhere but at the beginning or end, this happens:


[root@anarchy.ma.cx]-[~]$ php -r 'error_reporting(E_ALL); $x = array("c",array(),"b","a"); natsort($x); 
print_r($x);';
Array
(
    [1] => Array
        (
        )

    [3] => a
    [2] => b
    [0] => c
)

Segmentation fault

Ok, there's not definitely a problem somewhere. Though I couldn't get a clean segfault like you, only later I discovered the script abnormaly terminates (but not segfault). Given code:

<?
        error_reporting(E_ALL);
        $x = array("c",array(),"b","a");
        $ret = natsort($x);
        var_dump($ret, $x);

        echo "ended\n";
?>

Output:
$ php -f natsort.php ; echo $?

Notice: Array to string conversion in natsort.php on line 4
natsort.php(4) : Notice - Array to string conversion

Notice: Array to string conversion in natsort.php on line 4
natsort.php(4) : Notice - Array to string conversion
255

Notice the missing 'ended' string and the return value.

After some hunting, I discovered the following: if you replace zend_qsort with qsort in line 400 of ext/standard/array.c I get:

$ php -f natsort.php ; echo $?

Notice: Array to string conversion in natsort.php on line 4
natsort.php(4) : Notice - Array to string conversion

Notice: Array to string conversion in natsort.php on line 4
natsort.php(4) : Notice - Array to string conversion
bool(true)
array(4) {
  [1]=>
  *RECURSION*
  [3]=>
  string(1) "a"
  [2]=>
  string(1) "b"
  [0]=>
  string(1) "c"
}
ended
0

Someone else got any idea, Andrei|Sterling ?

Heh, read "Ok, there's definitely a problem somewhere." ;)

Works fine with current PHP versions.