diff options
Diffstat (limited to 'system/database/DB_driver.php')
| -rw-r--r-- | system/database/DB_driver.php | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php index 39c19cdf7..65f1f18d0 100644 --- a/system/database/DB_driver.php +++ b/system/database/DB_driver.php @@ -934,8 +934,8 @@ abstract class CI_DB_driver { * * This function escapes column and table names * - * @param string - * @return string + * @param mixed + * @return mixed */ public function escape_identifiers($item) { @@ -943,25 +943,39 @@ abstract class CI_DB_driver { { return $item; } - - foreach ($this->_reserved_identifiers as $id) + elseif (is_array($item)) { - if (strpos($item, '.'.$id) !== FALSE) + foreach ($item as $key => $value) { - $item = str_replace('.', $this->_escape_char.'.', $item); + $item[$key] = $this->escape_identifiers($value); + } + + return $item; + } - // remove duplicates if the user already included the escape - return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $this->_escape_char.$item); + static $preg_ec = array(); + + if (empty($preg_ec)) + { + if (is_array($this->_escape_char)) + { + $preg_ec = array(preg_quote($this->_escape_char[0]), preg_quote($this->_escape_char[1])); + } + else + { + $preg_ec[0] = $preg_ec[1] = preg_quote($this->_escape_char); } } - if (strpos($item, '.') !== FALSE) + foreach ($this->_reserved_identifiers as $id) { - $item = str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item); + if (strpos($item, '.'.$id) !== FALSE) + { + return preg_replace('/'.$preg_ec[0].'?([^'.$preg_ec[1].'\.]+)'.$preg_ec[1].'?\./i', $preg_ec[0].'$1'.$preg_ec[1].'.', $item); + } } - // remove duplicates if the user already included the escape - return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $this->_escape_char.$item.$this->_escape_char); + return preg_replace('/'.$preg_ec[0].'?([^'.$preg_ec[1].'\.]+)'.$preg_ec[1].'?(\.)?/i', $preg_ec[0].'$1'.$preg_ec[1].'$2', $item); } // -------------------------------------------------------------------- |