Cause all the .php files containing lines ending with \r\n to instead end with \n.
DYI with:
find fusionpbx -type f -name '*.php' -exec dos2unix '{}' \;
Problem because if you have say 15 ext. and one of ext has say number `14`
and extension `14` has index 15 in array.
And php returns
```PHP
$a = array('14' => 'string', 14 => 'number');
print($a['14']); // number
``