From: it at oh-barcelona dot com
Operating system: Windows
PHP version: 4.3.2
PHP Bug Type: Variables related
Bug description: SORT_ASC when passed into a function can NOT be passed as a string
Description:
------------
Hello,
I've found a perplexing bug with sorting flags. When you create a
function to create (for example) an dynamic array_multisort() and one of
the arguements which is passed is a SORT_ASC (or any other flag) which is
used to create the array_multisort() it MUST be passed without quotes and
not as a string.
In the example below you will see that if you gettype() of the $arg the
SORT_DESC returns an integer not a string when passed without quotes and a
string with.
If the SORT flag is passed as a string the array_multisort acts as if it
were null.
This stops me from setting the SORT flag via if statement.
I have written a work around but this problem should be addressed because
if you settype() a string it becomes "0".
The function call is:
$ new_array = array_column_sort($someArray,'column',SORT_DESC)
The function does not work if you use:
$sortFlag = "SORT_ASC";
$ new_array = array_column_sort($someArray,'column',$sortFlag )
Reproduce code:
---------------
function array_column_sort(){
$args = func_get_args();
$array = array_shift($args);
// make a temporary copy of array for which will fix the
// keys to be strings, so that array_multisort() doesn't
// destroy them
$array_mod = array();
foreach ($array as $key => $value)
$array_mod['_' . $key] = $value;
$i = 0;
$multi_sort_line = "return array_multisort( ";
foreach ($args as $arg) {
$i++;
if ( is_string($arg) ){
foreach ($array_mod as $row_key => $row){
$sort_array[$i][] = $row[$arg];
}
}else{
$sort_array[$i] = $arg;
}
$multi_sort_line .= "\$sort_array[" . $i . "], ";
}
$multi_sort_line .= "\$array_mod );";
eval($multi_sort_line);
// now copy $array_mod back into $array, stripping off the "_"
// that we added earlier.
$array = array();
foreach ($array_mod as $key => $value)
$array[ substr($key, 1) ] = $value;
return $array;
}
Expected result:
----------------
The array should be sorted by column and SORT flag.
Actual result:
--------------
The array_multisort only excepts the SORT flag without quotes and not as a
string.
--
Edit bug report at http://bugs.php.net/?id=25879&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25879&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25879&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=25879&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=25879&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=25879&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=25879&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=25879&r=support
Expected behavior: http://bugs.php.net/fix.php?id=25879&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=25879&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=25879&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=25879&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25879&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=25879&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=25879&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=25879&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=25879&r=float
