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<?php /** * ParameterBag is a container for key/value pairs. * * @author Fabien Potencier <fabien@symfony.com> * * @api */ class ParameterBag implements \IteratorAggregate, \Countable { /** * Parameter storage. * * @var array */ protected $parameters; /** * Constructor. * * @param array $parameters An array of parameters * * @api */ public function __construct(array $parameters = array()) { $this->parameters = $parameters; } /** * Returns the parameters. * * @return array An array of parameters * * @api */ public function all() { return $this->parameters; } /** * Returns the parameter keys. * * @return array An array of parameter keys * * @api */ public function keys() { return array_keys($this->parameters); } /** * Replaces the current parameters by a new set. * * @param array $parameters An array of parameters * * @api */ public function replace(array $parameters = array()) { $this->parameters = $parameters; } /** * Adds parameters. * * @param array $parameters An array of parameters * * @api */ public function add(array $parameters = array()) { $this->parameters = array_replace($this->parameters, $parameters); } /** * Returns a parameter by name. * * @param string $path The key * @param mixed $default The default value if the parameter key does not exist * @param boolean $deep If true, a path like foo[bar] will find deeper items * * @return mixed * * @throws \InvalidArgumentException * * @api */ public function get($path, $default = null, $deep = false) { if (!$deep || false === $pos = strpos($path, '[')) { return array_key_exists($path, $this->parameters) ? $this->parameters[$path] : $default; } $root = substr($path, 0, $pos); if (!array_key_exists($root, $this->parameters)) { return $default; } $value = $this->parameters[$root]; $currentKey = null; for ($i = $pos, $c = strlen($path); $i < $c; $i++) { $char = $path[$i]; if ('[' === $char) { if (null !== $currentKey) { throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "[" at position %d.', $i)); } $currentKey = ''; } elseif (']' === $char) { if (null === $currentKey) { throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "]" at position %d.', $i)); } if (!is_array($value) || !array_key_exists($currentKey, $value)) { return $default; } $value = $value[$currentKey]; $currentKey = null; } else { if (null === $currentKey) { throw new \InvalidArgumentException(sprintf('Malformed path. Unexpected "%s" at position %d.', $char, $i)); } $currentKey .= $char; } } if (null !== $currentKey) { throw new \InvalidArgumentException(sprintf('Malformed path. Path must end with "]".')); } return $value; } /** * Sets a parameter by name. * * @param string $key The key * @param mixed $value The value * * @api */ public function set($key, $value) { $this->parameters[$key] = $value; } /** * Returns true if the parameter is defined. * * @param string $key The key * * @return Boolean true if the parameter exists, false otherwise * * @api */ public function has($key) { return array_key_exists($key, $this->parameters); } /** * Removes a parameter. * * @param string $key The key * * @api */ public function remove($key) { unset($this->parameters[$key]); } /** * Returns the alphabetic characters of the parameter value. * * @param string $key The parameter key * @param mixed $default The default value if the parameter key does not exist * @param boolean $deep If true, a path like foo[bar] will find deeper items * * @return string The filtered value * * @api */ public function getAlpha($key, $default = '', $deep = false) { return preg_replace('/[^[:alpha:]]/', '', $this->get($key, $default, $deep)); } /** * Returns the alphabetic characters and digits of the parameter value. * * @param string $key The parameter key * @param mixed $default The default value if the parameter key does not exist * @param boolean $deep If true, a path like foo[bar] will find deeper items * * @return string The filtered value * * @api */ public function getAlnum($key, $default = '', $deep = false) { return preg_replace('/[^[:alnum:]]/', '', $this->get($key, $default, $deep)); } /** * Returns the digits of the parameter value. * * @param string $key The parameter key * @param mixed $default The default value if the parameter key does not exist * @param boolean $deep If true, a path like foo[bar] will find deeper items * * @return string The filtered value * * @api */ public function getDigits($key, $default = '', $deep = false) { // we need to remove - and + because they're allowed in the filter return str_replace(array('-', '+'), '', $this->filter($key, $default, $deep, FILTER_SANITIZE_NUMBER_INT)); } /** * Returns the parameter value converted to integer. * * @param string $key The parameter key * @param mixed $default The default value if the parameter key does not exist * @param boolean $deep If true, a path like foo[bar] will find deeper items * * @return integer The filtered value * * @api */ public function getInt($key, $default = 0, $deep = false) { return (int) $this->get($key, $default, $deep); } /** * Filter key. * * @param string $key Key. * @param mixed $default Default = null. * @param boolean $deep Default = false. * @param integer $filter FILTER_* constant. * @param mixed $options Filter options. * * @see http://php.net/manual/en/function.filter-var.php * * @return mixed */ public function filter($key, $default = null, $deep = false, $filter = FILTER_DEFAULT, $options = array()) { $value = $this->get($key, $default, $deep); // Always turn $options into an array - this allows filter_var option shortcuts. if (!is_array($options) && $options) { $options = array('flags' => $options); } // Add a convenience check for arrays. if (is_array($value) && !isset($options['flags'])) { $options['flags'] = FILTER_REQUIRE_ARRAY; } return filter_var($value, $filter, $options); } /** * Returns an iterator for parameters. * * @return \ArrayIterator An \ArrayIterator instance */ public function getIterator() { return new \ArrayIterator($this->parameters); } /** * Returns the number of parameters. * * @return int The number of parameters */ public function count() { return count($this->parameters); } } $test = new ParameterBag(array('test' => 'test%2B12')); echo $test->get('test');