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|<- [[NULL and empty]]|[[Constants]] ->|

===== type Juggling ans Casting =====

D'un type à l'autre -> type juggling

Spécifier soi-même le type : type casting

<code>
settype($var, "integer");
(integer) $var; // idem
</code>

==== valeurs possibles ====

  * string
  * int, integer
  * float
  * array
  * bool, boolean

==== conversions ====

=== type juggling ===
<code>
$count = "2";
echo gettype($count); // string

$count = "2";
$count += 3; // 5
echo gettype($count); // int

$count = "2 chats";
$count += 3; // 5, oui. toujours.
echo gettype($count); // int

echo gettype("j'ai " . $count . "chats"); // string
</code>

Il vaut mieux évidemment gérer ça soit même.

=== type casting ===

<code>
$count = "2";
$count = settype($count, "int");
echo gettype($b); // int
$count = "2";
$count = (int) $count;
echo gettype($count); // int
$count = "2";
echo gettype( (int) $count); // int
$count = "2";
(int) $count; // attention !
echo gettype($count); // String <- là

// la forme (<type>) value/var ne marche que pour assignation ou instruction, n'impacte PAS la variable.
</code>