I came across a strange behaviour in array_merge since I installed php5.
I merge three arrays, one of them can be empty. So not an array at all.
In php 4.3.6 that I had before, there was no warning and the two first arrays were merged. In php5 on the other hand, there is a warning and my array is empty.
Is this behaviour wanted? Or is this just me having this problem?
I find it pretty ugly, either there is more than a warning, or at least the first two arrays should be merged and given back.
$array_1 = array('key1'=>'oranges','key2'=>'apples'); $array_2 = array('key3'=>'pears','key4'=>'tomatoes');
$array_3 = null;
$arr_gemerged = array_merge($array_1,$array_2,$array_3);print_r($arr_gemerged);
Result on php4:
Array ( [key1] => oranges [key2] => apples [key3] => pears [key4] => tomatoes )
Result on php5:
Warning: array_merge() [function.array-merge]: Argument #3 is not an array in /Library/WebServer/Documents/regis24/admin/test_array_merge.php on line 7
I would define this behaviour as backwards incompatible. How about you?
Sebastian
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