<?php /** * Library of array functions for Cake. * * PHP versions 4 and 5 * * CakePHP(tm) : Rapid Development Framework (http://cakephp.org) * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org) * * Licensed under The MIT License * Redistributions of files must retain the above copyright notice. * * @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org) * @link http://cakephp.org CakePHP(tm) Project * @package cake * @subpackage cake.cake.libs * @since CakePHP(tm) v 1.2.0 * @license MIT License (http://www.opensource.org/licenses/mit-license.php) */ /** * Class used for manipulation of arrays. * * @package cake * @subpackage cake.cake.libs */ class Set { /** * This function can be thought of as a hybrid between PHP's array_merge and array_merge_recursive. The difference * to the two is that if an array key contains another array then the function behaves recursive (unlike array_merge) * but does not do if for keys containing strings (unlike array_merge_recursive). * See the unit test for more information. * * Note: This function will work with an unlimited amount of arguments and typecasts non-array parameters into arrays. * * @param array $arr1 Array to be merged * @param array $arr2 Array to merge with * @return array Merged array * @access public * @static */ function merge($arr1, $arr2 = null) { $args = func_get_args(); $r = (array)current($args); while (($arg = next($args)) !== false) { foreach ((array)$arg as $key => $val) { if (is_array($val) && isset($r[$key]) && is_array($r[$key])) { $r[$key] = Set::merge($r[$key], $val); } elseif (is_int($key)) { $r[] = $val; } else { $r[$key] = $val; } } } return $r; } /** * Filters empty elements out of a route array, excluding '0'. * * @param mixed $var Either an array to filter, or value when in callback * @param boolean $isArray Force to tell $var is an array when $var is empty * @return mixed Either filtered array, or true/false when in callback * @access public * @static */ function filter($var, $isArray = false) { if (is_array($var) && (!empty($var) || $isArray)) { return array_filter($var, array('Set', 'filter')); } if ($var === 0 || $var === '0' || !empty($var)) { return true; } return false; } /** * Pushes the differences in $array2 onto the end of $array * * @param mixed $array Original array * @param mixed $array2 Differences to push * @return array Combined array * @access public * @static */ function pushDiff($array, $array2) { if (empty($array) && !empty($array2)) { return $array2; } if (!empty($array) && !empty($array2)) { foreach ($array2 as $key => $value) { if (!array_key_exists($key, $array)) { $array[$key] = $value; } else { if (is_array($value)) { $array[$key] = Set::pushDiff($array[$key], $array2[$key]); } } } } return $array; } /** * Maps the contents of the Set object to an object hierarchy. * Maintains numeric keys as arrays of objects * * @param string $class A class name of the type of object to map to * @param string $tmp A temporary class name used as $class if $class is an array * @return object Hierarchical object * @access public * @static */ function map($class = 'stdClass', $tmp = 'stdClass') { if (is_array($class)) { $val = $class; $class = $tmp; } if (empty($val)) { return null; } return Set::__map($val, $class); } /** * Get the array value of $array. If $array is null, it will return * the current array Set holds. If it is an object of type Set, it * will return its value. If it is another object, its object variables. * If it is anything else but an array, it will return an array whose first * element is $array. * * @param mixed $array Data from where to get the array. * @return array Array from $array. * @access private */ function __array($array) { if (empty($array)) { $array = array(); } elseif (is_object($array)) { $array = get_object_vars($array); } elseif (!is_array($array)) { $array = array($array); } return $array; } /** * Maps the given value as an object. If $value is an object, * it returns $value. Otherwise it maps $value as an object of * type $class, and if primary assign _name_ $key on first array. * If $value is not empty, it will be used to set properties of * returned object (recursively). If $key is numeric will maintain array * structure * * @param mixed $value Value to map * @param string $class Class name * @param boolean $primary whether to assign first array key as the _name_ * @return mixed Mapped object * @access private * @static */ function __map(&$array, $class, $primary = false) { if ($class === true) { $out = new stdClass; } else { $out = new $class; } if (is_array($array)) { $keys = array_keys($array); foreach ($array as $key => $value) { if ($keys[0] === $key && $class !== true) { $primary = true; } if (is_numeric($key)) { if (is_object($out)) { $out = get_object_vars($out); } $out[$key] = Set::__map($value, $class); if (is_object($out[$key])) { if ($primary !== true && is_array($value) && Set::countDim($value, true) === 2) { if (!isset($out[$key]->_name_)) { $out[$key]->_name_ = $primary; } } } } elseif (is_array($value)) { if ($primary === true) { if (!isset($out->_name_)) { $out->_name_ = $key; } $primary = false; foreach ($value as $key2 => $value2) { $out->{$key2} = Set::__map($value2, true); } } else { if (!is_numeric($key)) { $out->{$key} = Set::__map($value, true, $key); if (is_object($out->{$key}) && !is_numeric($key)) { if (!isset($out->{$key}->_name_)) { $out->{$key}->_name_ = $key; } } } else { $out->{$key} = Set::__map($value, true); } } } else { $out->{$key} = $value; } } } else { $out = $array; } return $out; } /** * Checks to see if all the values in the array are numeric * * @param array $array The array to check. If null, the value of the current Set object * @return boolean true if values are numeric, false otherwise * @access public * @static */ function numeric($array = null) { if (empty($array)) { return null; } if ($array === range(0, count($array) - 1)) { return true; } $numeric = true; $keys = array_keys($array); $count = count($keys); for ($i = 0; $i < $count; $i++) { if (!is_numeric($array[$keys[$i]])) { $numeric = false; break; } } return $numeric; } /** * Return a value from an array list if the key exists. * * If a comma separated $list is passed arrays are numeric with the key of the first being 0 * $list = 'no, yes' would translate to $list = array(0 => 'no', 1 => 'yes'); * * If an array is used, keys can be strings example: array('no' => 0, 'yes' => 1); * * $list defaults to 0 = no 1 = yes if param is not passed * * @param mixed $select Key in $list to return * @param mixed $list can be an array or a comma-separated list. * @return string the value of the array key or null if no match * @access public * @static */ function enum($select, $list = null) { if (empty($list)) { $list = array('no', 'yes'); } $return = null; $list = Set::normalize($list, false); if (array_key_exists($select, $list)) { $return = $list[$select]; } return $return; } /** * Returns a series of values extracted from an array, formatted in a format string. * * @param array $data Source array from which to extract the data * @param string $format Format string into which values will be inserted, see sprintf() * @param array $keys An array containing one or more Set::extract()-style key paths * @return array An array of strings extracted from $keys and formatted with $format * @access public * @static */ function format($data, $format, $keys) { $extracted = array(); $count = count($keys); if (!$count) { return; } for ($i = 0; $i < $count; $i++) { $extracted[] = Set::extract($data, $keys[$i]); } $out = array(); $data = $extracted; $count = count($data[0]); if (preg_match_all('/\{([0-9]+)\}/msi', $format, $keys2) && isset($keys2[1])) { $keys = $keys2[1]; $format = preg_split('/\{([0-9]+)\}/msi', $format); $count2 = count($format); for ($j = 0; $j < $count; $j++) { $formatted = ''; for ($i = 0; $i <= $count2; $i++) { if (isset($format[$i])) { $formatted .= $format[$i]; } if (isset($keys[$i]) && isset($data[$keys[$i]][$j])) { $formatted .= $data[$keys[$i]][$j]; } } $out[] = $formatted; } } else { $count2 = count($data); for ($j = 0; $j < $count; $j++) { $args = array(); for ($i = 0; $i < $count2; $i++) { if (isset($data[$i][$j])) { $args[] = $data[$i][$j]; } } $out[] = vsprintf($format, $args); } } return $out; } /** * Implements partial support for XPath 2.0. If $path is an array or $data is empty it the call * is delegated to Set::classicExtract. * * #### Currently implemented selectors: * * - /User/id (similar to the classic {n}.User.id) * - /User[2]/name (selects the name of the second User) * - /User[id>2] (selects all Users with an id > 2) * - /User[id>2][<5] (selects all Users with an id > 2 but < 5) * - /Post/Comment[author_name=john]/../name (Selects the name of all Posts that have at least one Comment written by john) * - /Posts[name] (Selects all Posts that have a 'name' key) * - /Comment/.[1] (Selects the contents of the first comment) * - /Comment/.[:last] (Selects the last comment) * - /Comment/.[:first] (Selects the first comment) * - /Comment[text=/cakephp/i] (Selects the all comments that have a text matching the regex /cakephp/i) * - /Comment/@* (Selects the all key names of all comments) * * #### Other limitations: * * - Only absolute paths starting with a single '/' are supported right now * * **Warning**: Even so it has plenty of unit tests the XPath support has not gone through a lot of * real-world testing. Please report Bugs as you find them. Suggestions for additional features to * implement are also very welcome! * * @param string $path An absolute XPath 2.0 path * @param array $data An array of data to extract from * @param array $options Currently only supports 'flatten' which can be disabled for higher XPath-ness * @return array An array of matched items * @access public * @static */ function extract($path, $data = null, $options = array()) { if (is_string($data)) { $tmp = $data; $data = $path; $path = $tmp; } if (strpos($path, '/') === false) { return Set::classicExtract($data, $path); } if (empty($data)) { return array(); } if ($path === '/') { return $data; } $contexts = $data; $options = array_merge(array('flatten' => true), $options); if (!isset($contexts[0])) { $current = current($data); if ((is_array($current) && count($data) < 1) || !is_array($current) || !Set::numeric(array_keys($data))) { $contexts = array($data); } } $tokens = array_slice(preg_split('/(?<!=|\\\\)\/(?![a-z-\s]*\])/', $path), 1); do { $token = array_shift($tokens); $conditions = false; if (preg_match_all('/\[([^=]+=\/[^\/]+\/|[^\]]+)\]/', $token, $m)) { $conditions = $m[1]; $token = substr($token, 0, strpos($token, '[')); } $matches = array(); foreach ($contexts as $key => $context) { if (!isset($context['trace'])) { $context = array('trace' => array(null), 'item' => $context, 'key' => $key); } if ($token === '..') { if (count($context['trace']) == 1) { $context['trace'][] = $context['key']; } $parent = implode('/', $context['trace']) . '/.'; $context['item'] = Set::extract($parent, $data); $context['key'] = array_pop($context['trace']); if (isset($context['trace'][1]) && $context['trace'][1] > 0) { $context['item'] = $context['item'][0]; } elseif (!empty($context['item'][$key])) { $context['item'] = $context['item'][$key]; } else { $context['item'] = array_shift($context['item']); } $matches[] = $context; continue; } $match = false; if ($token === '@*' && is_array($context['item'])) { $matches[] = array( 'trace' => array_merge($context['trace'], (array)$key), 'key' => $key, 'item' => array_keys($context['item']), ); } elseif (($key === $token || (ctype_digit($token) && $key == $token) || $token === '.')) { $context['trace'][] = $key; $matches[] = array( 'trace' => $context['trace'], 'key' => $key, 'item' => $context['item'], ); } elseif (is_array($context['item']) && array_key_exists($token, $context['item'])) { $items = $context['item'][$token]; if (!is_array($items)) { $items = array($items); } elseif (!isset($items[0])) { $current = current($items); $currentKey = key($items); if (!is_array($current) || (is_array($current) && count($items) <= 1 && !is_numeric($currentKey))) { $items = array($items); } } foreach ($items as $key => $item) { $ctext = array($context['key']); if (!is_numeric($key)) { $ctext[] = $token; $tok = array_shift($tokens); if (isset($items[$tok])) { $ctext[] = $tok; $item = $items[$tok]; $matches[] = array( 'trace' => array_merge($context['trace'], $ctext), 'key' => $tok, 'item' => $item, ); break; } elseif ($tok !== null) { array_unshift($tokens, $tok); } } else { $key = $token; } $matches[] = array( 'trace' => array_merge($context['trace'], $ctext), 'key' => $key, 'item' => $item, ); } } } if ($conditions) { foreach ($conditions as $condition) { $filtered = array(); $length = count($matches); foreach ($matches as $i => $match) { if (Set::matches(array($condition), $match['item'], $i + 1, $length)) { $filtered[$i] = $match; } } $matches = $filtered; } } $contexts = $matches; if (empty($tokens)) { break; } } while(1); $r = array(); foreach ($matches as $match) { if ((!$options['flatten'] || is_array($match['item'])) && !is_int($match['key'])) { $r[] = array($match['key'] => $match['item']); } else { $r[] = $match['item']; } } return $r; } /** * This function can be used to see if a single item or a given xpath match certain conditions. * * @param mixed $conditions An array of condition strings or an XPath expression * @param array $data An array of data to execute the match on * @param integer $i Optional: The 'nth'-number of the item being matched. * @return boolean * @access public * @static */ function matches($conditions, $data = array(), $i = null, $length = null) { if (empty($conditions)) { return true; } if (is_string($conditions)) { return !!Set::extract($conditions, $data); } foreach ($conditions as $condition) { if ($condition === ':last') { if ($i != $length) { return false; } continue; } elseif ($condition === ':first') { if ($i != 1) { return false; } continue; } if (!preg_match('/(.+?)([><!]?[=]|[><])(.*)/', $condition, $match)) { if (ctype_digit($condition)) { if ($i != $condition) { return false; } } elseif (preg_match_all('/(?:^[0-9]+|(?<=,)[0-9]+)/', $condition, $matches)) { return in_array($i, $matches[0]); } elseif (!array_key_exists($condition, $data)) { return false; } continue; } list(,$key,$op,$expected) = $match; if (!isset($data[$key])) { return false; } $val = $data[$key]; if ($op === '=' && $expected && $expected{0} === '/') { return preg_match($expected, $val); } if ($op === '=' && $val != $expected) { return false; } if ($op === '!=' && $val == $expected) { return false; } if ($op === '>' && $val <= $expected) { return false; } if ($op === '<' && $val >= $expected) { return false; } if ($op === '<=' && $val > $expected) { return false; } if ($op === '>=' && $val < $expected) { return false; } } return true; } /** * Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.: * "{n}.Person.{[a-z]+}" - Where "{n}" represents a numeric key, "Person" represents a string literal, * and "{[a-z]+}" (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as * a regular expression. * * @param array $data Array from where to extract * @param mixed $path As an array, or as a dot-separated string. * @return array Extracted data * @access public * @static */ function classicExtract($data, $path = null) { if (empty($path)) { return $data; } if (is_object($data)) { $data = get_object_vars($data); } if (!is_array($data)) { return $data; } if (!is_array($path)) { if (!class_exists('String')) { App::import('Core', 'String'); } $path = String::tokenize($path, '.', '{', '}'); } $tmp = array(); if (!is_array($path) || empty($path)) { return null; } foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key === '0') { if (isset($data[intval($key)])) { $data = $data[intval($key)]; } else { return null; } } elseif ($key === '{n}') { foreach ($data as $j => $val) { if (is_int($j)) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[] = $val; } else { $tmp[] = Set::classicExtract($val, $tmpPath); } } } return $tmp; } elseif ($key === '{s}') { foreach ($data as $j => $val) { if (is_string($j)) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[] = $val; } else { $tmp[] = Set::classicExtract($val, $tmpPath); } } } return $tmp; } elseif (false !== strpos($key,'{') && false !== strpos($key,'}')) { $pattern = substr($key, 1, -1); foreach ($data as $j => $val) { if (preg_match('/^'.$pattern.'/s', $j) !== 0) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[$j] = $val; } else { $tmp[$j] = Set::classicExtract($val, $tmpPath); } } } return $tmp; } else { if (isset($data[$key])) { $data = $data[$key]; } else { return null; } } } return $data; } /** * Inserts $data into an array as defined by $path. * * @param mixed $list Where to insert into * @param mixed $path A dot-separated string. * @param array $data Data to insert * @return array * @access public * @static */ function insert($list, $path, $data = null) { if (!is_array($path)) { $path = explode('.', $path); } $_list =& $list; foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key === '0') { $key = intval($key); } if ($i === count($path) - 1) { $_list[$key] = $data; } else { if (!isset($_list[$key])) { $_list[$key] = array(); } $_list =& $_list[$key]; } } return $list; } /** * Removes an element from a Set or array as defined by $path. * * @param mixed $list From where to remove * @param mixed $path A dot-separated string. * @return array Array with $path removed from its value * @access public * @static */ function remove($list, $path = null) { if (empty($path)) { return $list; } if (!is_array($path)) { $path = explode('.', $path); } $_list =& $list; foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key === '0') { $key = intval($key); } if ($i === count($path) - 1) { unset($_list[$key]); } else { if (!isset($_list[$key])) { return $list; } $_list =& $_list[$key]; } } return $list; } /** * Checks if a particular path is set in an array * * @param mixed $data Data to check on * @param mixed $path A dot-separated string. * @return boolean true if path is found, false otherwise * @access public * @static */ function check($data, $path = null) { if (empty($path)) { return $data; } if (!is_array($path)) { $path = explode('.', $path); } foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key === '0') { $key = intval($key); } if ($i === count($path) - 1) { return (is_array($data) && array_key_exists($key, $data)); } if (!is_array($data) || !array_key_exists($key, $data)) { return false; } $data =& $data[$key]; } return true; } /** * Computes the difference between a Set and an array, two Sets, or two arrays * * @param mixed $val1 First value * @param mixed $val2 Second value * @return array Returns the key => value pairs that are not common in $val1 and $val2 * The expression for this function is ($val1 - $val2) + ($val2 - ($val1 - $val2)) * @access public * @static */ function diff($val1, $val2 = null) { if (empty($val1)) { return (array)$val2; } if (empty($val2)) { return (array)$val1; } $intersection = array_intersect_key($val1, $val2); while (($key = key($intersection)) !== null) { if ($val1[$key] == $val2[$key]) { unset($val1[$key]); unset($val2[$key]); } next($intersection); } return $val1 + $val2; } /** * Determines if one Set or array contains the exact keys and values of another. * * @param array $val1 First value * @param array $val2 Second value * @return boolean true if $val1 contains $val2, false otherwise * @access public * @static */ function contains($val1, $val2 = null) { if (empty($val1) || empty($val2)) { return false; } foreach ($val2 as $key => $val) { if (is_numeric($key)) { Set::contains($val, $val1); } else { if (!isset($val1[$key]) || $val1[$key] != $val) { return false; } } } return true; } /** * Counts the dimensions of an array. If $all is set to false (which is the default) it will * only consider the dimension of the first element in the array. * * @param array $array Array to count dimensions on * @param boolean $all Set to true to count the dimension considering all elements in array * @param integer $count Start the dimension count at this number * @return integer The number of dimensions in $array * @access public * @static */ function countDim($array = null, $all = false, $count = 0) { if ($all) { $depth = array($count); if (is_array($array) && reset($array) !== false) { foreach ($array as $value) { $depth[] = Set::countDim($value, true, $count + 1); } } $return = max($depth); } else { if (is_array(reset($array))) { $return = Set::countDim(reset($array)) + 1; } else { $return = 1; } } return $return; } /** * Normalizes a string or array list. * * @param mixed $list List to normalize * @param boolean $assoc If true, $list will be converted to an associative array * @param string $sep If $list is a string, it will be split into an array with $sep * @param boolean $trim If true, separated strings will be trimmed * @return array * @access public * @static */ function normalize($list, $assoc = true, $sep = ',', $trim = true) { if (is_string($list)) { $list = explode($sep, $list); if ($trim) { foreach ($list as $key => $value) { $list[$key] = trim($value); } } if ($assoc) { return Set::normalize($list); } } elseif (is_array($list)) { $keys = array_keys($list); $count = count($keys); $numeric = true; if (!$assoc) { for ($i = 0; $i < $count; $i++) { if (!is_int($keys[$i])) { $numeric = false; break; } } } if (!$numeric || $assoc) { $newList = array(); for ($i = 0; $i < $count; $i++) { if (is_int($keys[$i])) { $newList[$list[$keys[$i]]] = null; } else { $newList[$keys[$i]] = $list[$keys[$i]]; } } $list = $newList; } } return $list; } /** * Creates an associative array using a $path1 as the path to build its keys, and optionally * $path2 as path to get the values. If $path2 is not specified, all values will be initialized * to null (useful for Set::merge). You can optionally group the values by what is obtained when * following the path specified in $groupPath. * * @param mixed $data Array or object from where to extract keys and values * @param mixed $path1 As an array, or as a dot-separated string. * @param mixed $path2 As an array, or as a dot-separated string. * @param string $groupPath As an array, or as a dot-separated string. * @return array Combined array * @access public * @static */ function combine($data, $path1 = null, $path2 = null, $groupPath = null) { if (empty($data)) { return array(); } if (is_object($data)) { $data = get_object_vars($data); } if (is_array($path1)) { $format = array_shift($path1); $keys = Set::format($data, $format, $path1); } else { $keys = Set::extract($data, $path1); } if (empty($keys)) { return array(); } if (!empty($path2) && is_array($path2)) { $format = array_shift($path2); $vals = Set::format($data, $format, $path2); } elseif (!empty($path2)) { $vals = Set::extract($data, $path2); } else { $count = count($keys); for ($i = 0; $i < $count; $i++) { $vals[$i] = null; } } if ($groupPath != null) { $group = Set::extract($data, $groupPath); if (!empty($group)) { $c = count($keys); for ($i = 0; $i < $c; $i++) { if (!isset($group[$i])) { $group[$i] = 0; } if (!isset($out[$group[$i]])) { $out[$group[$i]] = array(); } $out[$group[$i]][$keys[$i]] = $vals[$i]; } return $out; } } if (empty($vals)) { return array(); } return array_combine($keys, $vals); } /** * Converts an object into an array. * @param object $object Object to reverse * @return array Array representation of given object * @public * @static */ function reverse($object) { $out = array(); if (is_a($object, 'XmlNode')) { $out = $object->toArray(); return $out; } else if (is_object($object)) { $keys = get_object_vars($object); if (isset($keys['_name_'])) { $identity = $keys['_name_']; unset($keys['_name_']); } $new = array(); foreach ($keys as $key => $value) { if (is_array($value)) { $new[$key] = (array)Set::reverse($value); } else { if (isset($value->_name_)) { $new = array_merge($new, Set::reverse($value)); } else { $new[$key] = Set::reverse($value); } } } if (isset($identity)) { $out[$identity] = $new; } else { $out = $new; } } elseif (is_array($object)) { foreach ($object as $key => $value) { $out[$key] = Set::reverse($value); } } else { $out = $object; } return $out; } /** * Collapses a multi-dimensional array into a single dimension, using a delimited array path for * each array element's key, i.e. array(array('Foo' => array('Bar' => 'Far'))) becomes * array('0.Foo.Bar' => 'Far'). * * @param array $data Array to flatten * @param string $separator String used to separate array key elements in a path, defaults to '.' * @return array * @access public * @static */ function flatten($data, $separator = '.') { $result = array(); $path = null; if (is_array($separator)) { extract($separator, EXTR_OVERWRITE); } if (!is_null($path)) { $path .= $separator; } foreach ($data as $key => $val) { if (is_array($val)) { $result += (array)Set::flatten($val, array( 'separator' => $separator, 'path' => $path . $key )); } else { $result[$path . $key] = $val; } } return $result; } /** * Flattens an array for sorting * * @param array $results * @param string $key * @return array * @access private */ function __flatten($results, $key = null) { $stack = array(); foreach ($results as $k => $r) { $id = $k; if (!is_null($key)) { $id = $key; } if (is_array($r) && !empty($r)) { $stack = array_merge($stack, Set::__flatten($r, $id)); } else { $stack[] = array('id' => $id, 'value' => $r); } } return $stack; } /** * Sorts an array by any value, determined by a Set-compatible path * * @param array $data An array of data to sort * @param string $path A Set-compatible path to the array value * @param string $dir Direction of sorting - either ascending (ASC), or descending (DESC) * @return array Sorted array of data * @static */ function sort($data, $path, $dir) { $originalKeys = array_keys($data); if (is_numeric(implode('', $originalKeys))) { $data = array_values($data); } $result = Set::__flatten(Set::extract($data, $path)); list($keys, $values) = array(Set::extract($result, '{n}.id'), Set::extract($result, '{n}.value')); $dir = strtolower($dir); if ($dir === 'asc') { $dir = SORT_ASC; } elseif ($dir === 'desc') { $dir = SORT_DESC; } array_multisort($values, $dir, $keys, $dir); $sorted = array(); $keys = array_unique($keys); foreach ($keys as $k) { $sorted[] = $data[$k]; } return $sorted; } /** * Allows the application of a callback method to elements of an * array extracted by a Set::extract() compatible path. * * @param mixed $path Set-compatible path to the array value * @param array $data An array of data to extract from & then process with the $callback. * @param mixed $callback Callback method to be applied to extracted data. * See http://ca2.php.net/manual/en/language.pseudo-types.php#language.types.callback for examples * of callback formats. * @param array $options Options are: * - type : can be pass, map, or reduce. Map will handoff the given callback * to array_map, reduce will handoff to array_reduce, and pass will * use call_user_func_array(). * @return mixed Result of the callback when applied to extracted data * @access public * @static */ function apply($path, $data, $callback, $options = array()) { $defaults = array('type' => 'pass'); $options = array_merge($defaults, $options); $extracted = Set::extract($path, $data); if ($options['type'] === 'map') { $result = array_map($callback, $extracted); } elseif ($options['type'] === 'reduce') { $result = array_reduce($extracted, $callback); } elseif ($options['type'] === 'pass') { $result = call_user_func_array($callback, array($extracted)); } else { return null; } return $result; } }