Why do strings behave like an array in PHP 5.3?

Question

I have this code:

$tierHosts[\'host\'] = isset($host[\'name\']) ? $host[\'name\'] : $host;

It\'s working fine in PHP 5.5, but in PHP 5.3 th

Answer 1

You can access strings like an array and prior PHP 5.4 offsets like your name were silently casted to 0, means you accessed the first character of that string:

character | p | j | b | a | 0 | 1 |
-----------------------------------
index     | 0 | 1 | 2 | 3 | 4 | 5 |

After 5.3 such offsets will throw a notice, as you can also read in the manual:

As of PHP 5.4 string offsets have to either be integers or integer-like strings, otherwise a warning will be thrown. Previously an offset like "foo" was silently cast to 0.