CodeIgniter cart class Arabic regex

问题

The Cart.php under system/library has a regex pattern definition that is not enabling me to use Arabic for name values. This works:

$data = array(
  'id' => "221212",
  'qty' => 1,
  'price' => 21.2,
  'name' => 'dasdasdas'
);

But this fails because of Arabic in the name:

$data = array(
  'id' => "221212",
  'qty' => 1,
  'price' => 21.2,
  'name' => 'عمر'
);

Now in the Cart.php class, I found the following:

// These are the regular expression rules that we use to validate the product ID and product name
  var $product_id_rules = '\.a-z0-9_-';
  // alpha-numeric, dashes, underscores, or periods
  var $product_name_rules = '\.\:\-_a-z0-9';
  // alphanumeric, dashes, underscores, colons or periods

I am concerned with the name rules. Clearly this is the problem because later on there is a check:

if ( ! preg_match("/^[".$this->product_name_rules."]+$/i", $items['name'])) {
  log_message('error', 'An invalid name was submitted as the product name: '.$items['name'].' The name can only contain alpha-numeric characters, dashes, underscores, colons, and spaces');
  return FALSE;
}

How can I replace the name rules string to work with Arabic? I have a very poor background with regex, so please help out.

Thanks!

回答1:

If you want to accept other characters, you have to modify $this->cart->product_name_rules after you have loaded the cart library.

$this->load->library('cart');
$this->cart->product_name_rules = '\.a-z0-9_-\p{Arabic}';

回答2:

It will work, if you change your $product_name_rules (partial) pattern into this:

var $product_name_rules = '\.\:\-_a-z0-9\p{Arabic}';

... then add /u modifier to the pattern actually used by preg_match:

if ( ! preg_match("/^[".$this->product_name_rules."]+$/iu", 
            $items['name'])) { ... }

Quoting the doc:

u (PCRE_UTF8)

This modifier turns on additional functionality of PCRE that is incompatible with Perl. Pattern strings are treated as UTF-8. This modifier is available from PHP 4.1.0 or greater on Unix and from PHP 4.2.3 on win32. UTF-8 validity of the pattern is checked since PHP 4.3.5.

回答3:

Change product_name regex to the following, which allows all:

var $product_name_rules = '^.'

来源：https://stackoverflow.com/questions/13514736/codeigniter-cart-class-arabic-regex

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