I'm implementing manually the array_unique function. I'm doing this:
class Prelude {
public static function unique($xs) {
$arr = array();
foreach($xs as $atom) {
if (!array_search($atom, $arr)) {
var_dump($arr);
echo "<br>";
array_push($arr, $atom);
}
}
return $arr;
}
}
Prelude :: unique(array(1, 1, 1, 1, 1, 3, 3, 4, 4, 4, 6, 7, 8));
I noticed that it works very well, except when $atom is 1. In my foreach loop, when I check if the value is already contained in the array and the value I want to check is one, it simply ignores and says me that there is no 1 in my array. Here is my output:
And here is when I check if there is 1 in [1, 1, 1]:
Can somebody explain me this?
Simple, Marcelo.
You're checking with ! which is the non-strict checking. You must check for !== FALSE. 1 is TRUE.
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