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To: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] 5.4 regression: non-existent sub-sub keys now have values
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

Just a quick note for this issue.
If I remember correctly, PHP is working this way at least from PHP 3.0.x.
$a[123] // integer index
$a['123'] // integer index
$a['123 abc'] // string index
$a['123.123'] // string index

Automatic string to integer conversion only happened if index string
has numeric chars.

It seems some people are confused.
isset($a[0][0])  became true if and only if $a is string.

If there is a code broken by this behavior, it would be enough for add
is_array()

if (is_array($a) && isset($a[0][0]))

I suppose.

--
Yasuo Ohgaki
yohgaki@ohgaki.net