CopernicaMarketingSoftware/PHP-CPP — pull request #118 by andot (2014-07-10 13:40:32+00:00)
Title: Fixed unset of Php::Value

The old unset can't work on associative array. because the key size is wrong.

for example:
```c++
void testUnset(Php::Parameters ¶ms) {
params[0].unset("hello");
}
```

```php
"world");
var_dump($a);
testUnset($a);
var_dump($a);
?>
```

Expected output is:
```
array(1) {
["hello"]=>
string(5) "world"
}
array(0) {
}
```

The actual output is:
```
array(1) {
["hello"]=>
string(5) "world"
}
array(1) {
["hello"]=>
string(5) "world"
}
```

This patch fixed it.