617 lines
13 KiB
PHP
617 lines
13 KiB
PHP
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<?php
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/**
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* @package Joomla.Platform
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* @subpackage Utilities
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* JArrayHelper is an array utility class for doing all sorts of odds and ends with arrays.
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*
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* @package Joomla.Platform
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* @subpackage Utilities
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* @since 11.1
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*/
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abstract class JArrayHelper
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{
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/**
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* Option to perform case-sensitive sorts.
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*
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* @var mixed Boolean or array of booleans.
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* @since 11.3
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*/
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protected static $sortCase;
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/**
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* Option to set the sort direction.
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*
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* @var mixed Integer or array of integers.
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* @since 11.3
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*/
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protected static $sortDirection;
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/**
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* Option to set the object key to sort on.
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*
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* @var string
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* @since 11.3
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*/
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protected static $sortKey;
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/**
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* Option to perform a language aware sort.
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*
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* @var mixed Boolean or array of booleans.
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* @since 11.3
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*/
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protected static $sortLocale;
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/**
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* Function to convert array to integer values
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*
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* @param array &$array The source array to convert
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* @param mixed $default A default value (int|array) to assign if $array is not an array
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*
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* @return void
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*
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* @since 11.1
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*/
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public static function toInteger(&$array, $default = null)
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{
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if (is_array($array))
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{
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foreach ($array as $i => $v)
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{
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$array[$i] = (int) $v;
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}
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}
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else
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{
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if ($default === null)
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{
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$array = array();
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}
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elseif (is_array($default))
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{
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self::toInteger($default, null);
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$array = $default;
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}
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else
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{
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$array = array((int) $default);
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}
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}
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}
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/**
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* Utility function to map an array to a stdClass object.
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*
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* @param array &$array The array to map.
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* @param string $class Name of the class to create
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*
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* @return object The object mapped from the given array
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*
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* @since 11.1
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*/
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public static function toObject(&$array, $class = 'stdClass')
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{
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$obj = null;
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if (is_array($array))
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{
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$obj = new $class;
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foreach ($array as $k => $v)
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{
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if (is_array($v))
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{
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$obj->$k = self::toObject($v, $class);
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}
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else
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{
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$obj->$k = $v;
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}
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}
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}
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return $obj;
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}
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/**
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* Utility function to map an array to a string.
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*
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* @param array $array The array to map.
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* @param string $inner_glue The glue (optional, defaults to '=') between the key and the value.
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* @param string $outer_glue The glue (optional, defaults to ' ') between array elements.
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* @param boolean $keepOuterKey True if final key should be kept.
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*
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* @return string The string mapped from the given array
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*
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* @since 11.1
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*/
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public static function toString($array = null, $inner_glue = '=', $outer_glue = ' ', $keepOuterKey = false)
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{
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$output = array();
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if (is_array($array))
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{
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foreach ($array as $key => $item)
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{
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if (is_array($item))
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{
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if ($keepOuterKey)
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{
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$output[] = $key;
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}
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// This is value is an array, go and do it again!
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$output[] = self::toString($item, $inner_glue, $outer_glue, $keepOuterKey);
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}
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else
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{
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$output[] = $key . $inner_glue . '"' . $item . '"';
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}
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}
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}
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return implode($outer_glue, $output);
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}
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/**
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* Utility function to map an object to an array
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*
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* @param object $p_obj The source object
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* @param boolean $recurse True to recurse through multi-level objects
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* @param string $regex An optional regular expression to match on field names
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*
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* @return array The array mapped from the given object
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*
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* @since 11.1
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*/
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public static function fromObject($p_obj, $recurse = true, $regex = null)
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{
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if (is_object($p_obj))
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{
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return self::_fromObject($p_obj, $recurse, $regex);
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}
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else
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{
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return null;
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}
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}
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/**
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* Utility function to map an object or array to an array
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*
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* @param mixed $item The source object or array
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* @param boolean $recurse True to recurse through multi-level objects
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* @param string $regex An optional regular expression to match on field names
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*
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* @return array The array mapped from the given object
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*
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* @since 11.1
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*/
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protected static function _fromObject($item, $recurse, $regex)
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{
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if (is_object($item))
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{
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$result = array();
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foreach (get_object_vars($item) as $k => $v)
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{
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if (!$regex || preg_match($regex, $k))
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{
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if ($recurse)
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{
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$result[$k] = self::_fromObject($v, $recurse, $regex);
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}
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else
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{
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$result[$k] = $v;
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}
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}
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}
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}
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elseif (is_array($item))
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{
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$result = array();
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foreach ($item as $k => $v)
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{
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$result[$k] = self::_fromObject($v, $recurse, $regex);
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}
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}
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else
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{
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$result = $item;
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}
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return $result;
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}
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/**
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* Extracts a column from an array of arrays or objects
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*
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* @param array &$array The source array
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* @param string $index The index of the column or name of object property
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*
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* @return array Column of values from the source array
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*
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* @since 11.1
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*/
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public static function getColumn(&$array, $index)
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{
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$result = array();
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if (is_array($array))
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{
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foreach ($array as &$item)
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{
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if (is_array($item) && isset($item[$index]))
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{
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$result[] = $item[$index];
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}
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elseif (is_object($item) && isset($item->$index))
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{
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$result[] = $item->$index;
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}
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// Else ignore the entry
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}
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}
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return $result;
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}
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/**
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* Utility function to return a value from a named array or a specified default
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*
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* @param array &$array A named array
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* @param string $name The key to search for
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* @param mixed $default The default value to give if no key found
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* @param string $type Return type for the variable (INT, FLOAT, STRING, WORD, BOOLEAN, ARRAY)
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*
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* @return mixed The value from the source array
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*
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* @since 11.1
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*/
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public static function getValue(&$array, $name, $default = null, $type = '')
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{
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$result = null;
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if (isset($array[$name]))
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{
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$result = $array[$name];
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}
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// Handle the default case
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if (is_null($result))
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{
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$result = $default;
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}
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// Handle the type constraint
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switch (strtoupper($type))
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{
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case 'INT':
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case 'INTEGER':
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// Only use the first integer value
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@preg_match('/-?[0-9]+/', $result, $matches);
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$result = @(int) $matches[0];
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break;
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case 'FLOAT':
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case 'DOUBLE':
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// Only use the first floating point value
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@preg_match('/-?[0-9]+(\.[0-9]+)?/', $result, $matches);
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$result = @(float) $matches[0];
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break;
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case 'BOOL':
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case 'BOOLEAN':
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$result = (bool) $result;
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break;
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case 'ARRAY':
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if (!is_array($result))
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{
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$result = array($result);
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}
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break;
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case 'STRING':
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$result = (string) $result;
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break;
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case 'WORD':
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$result = (string) preg_replace('#\W#', '', $result);
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break;
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case 'NONE':
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default:
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// No casting necessary
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break;
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}
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return $result;
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}
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/**
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* Takes an associative array of arrays and inverts the array keys to values using the array values as keys.
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*
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* Example:
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* $input = array(
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* 'New' => array('1000', '1500', '1750'),
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* 'Used' => array('3000', '4000', '5000', '6000')
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* );
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* $output = JArrayHelper::invert($input);
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*
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* Output would be equal to:
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* $output = array(
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* '1000' => 'New',
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* '1500' => 'New',
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* '1750' => 'New',
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* '3000' => 'Used',
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* '4000' => 'Used',
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* '5000' => 'Used',
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* '6000' => 'Used'
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* );
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*
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* @param array $array The source array.
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*
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* @return array The inverted array.
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*
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* @since 12.3
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*/
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public static function invert($array)
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{
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$return = array();
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foreach ($array as $base => $values)
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{
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if (!is_array($values))
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{
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continue;
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}
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foreach ($values as $key)
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{
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// If the key isn't scalar then ignore it.
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if (is_scalar($key))
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{
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$return[$key] = $base;
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}
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}
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}
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return $return;
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}
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/**
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* Method to determine if an array is an associative array.
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*
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* @param array $array An array to test.
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*
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* @return boolean True if the array is an associative array.
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*
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* @since 11.1
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*/
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public static function isAssociative($array)
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{
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if (is_array($array))
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{
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foreach (array_keys($array) as $k => $v)
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{
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if ($k !== $v)
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{
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Pivots an array to create a reverse lookup of an array of scalars, arrays or objects.
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*
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* @param array $source The source array.
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* @param string $key Where the elements of the source array are objects or arrays, the key to pivot on.
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||
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*
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||
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* @return array An array of arrays pivoted either on the value of the keys, or an individual key of an object or array.
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||
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*
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* @since 11.3
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*/
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public static function pivot($source, $key = null)
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{
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$result = array();
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$counter = array();
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|
|
foreach ($source as $index => $value)
|
||
|
|
{
|
||
|
|
// Determine the name of the pivot key, and its value.
|
||
|
|
if (is_array($value))
|
||
|
|
{
|
||
|
|
// If the key does not exist, ignore it.
|
||
|
|
if (!isset($value[$key]))
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$resultKey = $value[$key];
|
||
|
|
$resultValue = &$source[$index];
|
||
|
|
}
|
||
|
|
elseif (is_object($value))
|
||
|
|
{
|
||
|
|
// If the key does not exist, ignore it.
|
||
|
|
if (!isset($value->$key))
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$resultKey = $value->$key;
|
||
|
|
$resultValue = &$source[$index];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Just a scalar value.
|
||
|
|
$resultKey = $value;
|
||
|
|
$resultValue = $index;
|
||
|
|
}
|
||
|
|
|
||
|
|
// The counter tracks how many times a key has been used.
|
||
|
|
if (empty($counter[$resultKey]))
|
||
|
|
{
|
||
|
|
// The first time around we just assign the value to the key.
|
||
|
|
$result[$resultKey] = $resultValue;
|
||
|
|
$counter[$resultKey] = 1;
|
||
|
|
}
|
||
|
|
elseif ($counter[$resultKey] == 1)
|
||
|
|
{
|
||
|
|
// If there is a second time, we convert the value into an array.
|
||
|
|
$result[$resultKey] = array(
|
||
|
|
$result[$resultKey],
|
||
|
|
$resultValue,
|
||
|
|
);
|
||
|
|
$counter[$resultKey]++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// After the second time, no need to track any more. Just append to the existing array.
|
||
|
|
$result[$resultKey][] = $resultValue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
unset($counter);
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Utility function to sort an array of objects on a given field
|
||
|
|
*
|
||
|
|
* @param array &$a An array of objects
|
||
|
|
* @param mixed $k The key (string) or a array of key to sort on
|
||
|
|
* @param mixed $direction Direction (integer) or an array of direction to sort in [1 = Ascending] [-1 = Descending]
|
||
|
|
* @param mixed $caseSensitive Boolean or array of booleans to let sort occur case sensitive or insensitive
|
||
|
|
* @param mixed $locale Boolean or array of booleans to let sort occur using the locale language or not
|
||
|
|
*
|
||
|
|
* @return array The sorted array of objects
|
||
|
|
*
|
||
|
|
* @since 11.1
|
||
|
|
*/
|
||
|
|
public static function sortObjects(&$a, $k, $direction = 1, $caseSensitive = true, $locale = false)
|
||
|
|
{
|
||
|
|
if (!is_array($locale) || !is_array($locale[0]))
|
||
|
|
{
|
||
|
|
$locale = array($locale);
|
||
|
|
}
|
||
|
|
|
||
|
|
self::$sortCase = (array) $caseSensitive;
|
||
|
|
self::$sortDirection = (array) $direction;
|
||
|
|
self::$sortKey = (array) $k;
|
||
|
|
self::$sortLocale = $locale;
|
||
|
|
|
||
|
|
usort($a, array(__CLASS__, '_sortObjects'));
|
||
|
|
|
||
|
|
self::$sortCase = null;
|
||
|
|
self::$sortDirection = null;
|
||
|
|
self::$sortKey = null;
|
||
|
|
self::$sortLocale = null;
|
||
|
|
|
||
|
|
return $a;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback function for sorting an array of objects on a key
|
||
|
|
*
|
||
|
|
* @param array &$a An array of objects
|
||
|
|
* @param array &$b An array of objects
|
||
|
|
*
|
||
|
|
* @return integer Comparison status
|
||
|
|
*
|
||
|
|
* @see JArrayHelper::sortObjects()
|
||
|
|
* @since 11.1
|
||
|
|
*/
|
||
|
|
protected static function _sortObjects(&$a, &$b)
|
||
|
|
{
|
||
|
|
$key = self::$sortKey;
|
||
|
|
|
||
|
|
for ($i = 0, $count = count($key); $i < $count; $i++)
|
||
|
|
{
|
||
|
|
if (isset(self::$sortDirection[$i]))
|
||
|
|
{
|
||
|
|
$direction = self::$sortDirection[$i];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset(self::$sortCase[$i]))
|
||
|
|
{
|
||
|
|
$caseSensitive = self::$sortCase[$i];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isset(self::$sortLocale[$i]))
|
||
|
|
{
|
||
|
|
$locale = self::$sortLocale[$i];
|
||
|
|
}
|
||
|
|
|
||
|
|
$va = $a->$key[$i];
|
||
|
|
$vb = $b->$key[$i];
|
||
|
|
|
||
|
|
if ((is_bool($va) || is_numeric($va)) && (is_bool($vb) || is_numeric($vb)))
|
||
|
|
{
|
||
|
|
$cmp = $va - $vb;
|
||
|
|
}
|
||
|
|
elseif ($caseSensitive)
|
||
|
|
{
|
||
|
|
$cmp = JString::strcmp($va, $vb, $locale);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
$cmp = JString::strcasecmp($va, $vb, $locale);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($cmp > 0)
|
||
|
|
{
|
||
|
|
|
||
|
|
return $direction;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($cmp < 0)
|
||
|
|
{
|
||
|
|
return -$direction;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Multidimensional array safe unique test
|
||
|
|
*
|
||
|
|
* @param array $myArray The array to make unique.
|
||
|
|
*
|
||
|
|
* @return array
|
||
|
|
*
|
||
|
|
* @see http://php.net/manual/en/function.array-unique.php
|
||
|
|
* @since 11.2
|
||
|
|
*/
|
||
|
|
public static function arrayUnique($myArray)
|
||
|
|
{
|
||
|
|
if (!is_array($myArray))
|
||
|
|
{
|
||
|
|
return $myArray;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($myArray as &$myvalue)
|
||
|
|
{
|
||
|
|
$myvalue = serialize($myvalue);
|
||
|
|
}
|
||
|
|
|
||
|
|
$myArray = array_unique($myArray);
|
||
|
|
|
||
|
|
foreach ($myArray as &$myvalue)
|
||
|
|
{
|
||
|
|
$myvalue = unserialize($myvalue);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $myArray;
|
||
|
|
}
|
||
|
|
}
|