[ 0 => 'foo[ ]', 1 => 'A..z',]
[ 'result' => [ 'string' => '\\f\\o\\o\\[ \\]', ], 'php_version' => '7.1.33 Linux x86_64',]
[ 0 => 'zoo[\'.\']', 1 => 'z..A',]
[ 'result' => [ 'string' => '\\zoo[\'\\.\']', ], 'errors' => [ 0 => [ 'code' => 2, 'message' => 'addcslashes(): Invalid \'..\'-range, \'..\'-range needs to be incrementing', ], ], 'php_version' => '7.1.33 Linux x86_64',]