Since PHP (for historical reasons) supports indexing into strings via offsets using the same syntax as array indexing, the example above leads to a problem: should $a become an array with its first element being "f", or should "f "become the first character of the string $a?
?php $a = "1"; / / $a est une chaîne $a[0] = "f"; / / Qu'est ce qu 'une position dans une chaîne? que se passe t il??