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<?php |
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/** |
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* This file is part of the Axstrad library. |
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* |
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* (c) Dan Kempster <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @copyright 2014-2015 Dan Kempster <[email protected]> |
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*/ |
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namespace Axstrad\Common\Util; |
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use Axstrad\Common\Exception\InvalidArgumentException; |
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/** |
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* Axstrad\Common\Util\ArrayUtil |
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* |
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* A collection of array functions. |
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* |
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* @author Dan Kempster <[email protected]> |
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* @package Axstrad\Common |
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* @subpackage Util |
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*/ |
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final class ArrayUtil |
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{ |
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/** |
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* Decompiles an array path string into an array of the path elements. |
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* |
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* For example |
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* |
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* $result = ArrayUtil::decompilePath('foo.doo.goo'); |
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* $result = ArrayUtil::decompilePath('foo[doo][goo]'); |
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* $result = ArrayUtil::decompilePath('[foo][doo][goo]'); |
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* |
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* // Outputs |
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* array( |
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* 'foo', |
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* 'doo', |
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* 'goo', |
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* ); |
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* |
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* @param string $path |
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* @return array |
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*/ |
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public static function decompilePath($path) |
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{ |
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if (is_object($path) && ! method_exists($path, '__toString')) { |
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throw InvalidArgumentException::create('scalar', $path); |
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} |
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$path = (string) $path; |
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if (preg_match('/^[a-z0-9_]*\./i', $path)) { |
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return explode('.', $path); |
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} |
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else { |
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$parts = array_filter(explode('[', $path), function (&$value) { |
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$value = trim($value, ']'); |
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return ! empty($value); |
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}); |
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return array_values($parts); |
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} |
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} |
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/** |
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* Return a value from an array using an array path. |
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* |
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* If the $arrayPath's value doesn't exist within $array return $default. |
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* |
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* @param string $arrayPath |
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* @param array $array |
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* @param mixed $default A default value to use if _key_ isn't set in _array_. |
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* @return mixed |
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* @uses decompilePath To decompile $arrayPath. |
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*/ |
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public static function get($arrayPath, array $array, $default = null) |
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{ |
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$pathKeys = self::decompilePath($arrayPath); |
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$_a = $array; |
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foreach ($pathKeys as $key) { |
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if ( ! isset($_a[$key])) { |
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return $default; |
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} |
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else { |
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$_a = $_a[$key]; |
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} |
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} |
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return $_a; |
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} |
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/** |
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* Merges any number of arrays / parameters recursively, replacing entries with string keys with values from latter |
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* arrays. |
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* |
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* If the entry or the next value to be assigned is an array, then it automagically treats both arguments as an |
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* array. Numeric entries are appended, not replaced, if the value doesn't already exist in the merged array |
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* otherwise they're skipped. |
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* |
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* @return array The merged array |
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*/ |
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public static function mergeRecursiveDistinct() |
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{ |
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$prepare = function ($arg) { |
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return ! is_array($arg) ? array($arg) : $arg; |
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}; |
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$arguments = func_get_args(); |
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$base = $prepare(array_shift($arguments)); |
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foreach ($arguments as $argument) { |
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$argument = $prepare($argument); |
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foreach ($argument as $key => $value) { |
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if ( ! is_numeric($key)) { |
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if ( ! array_key_exists($key, $base) |
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|| ( ! is_array($value) && ! is_array($base[$key])) |
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) { |
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$base[$key] = $value; |
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} |
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else { |
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$base[$key] = self::mergeRecursiveDistinct($base[$key], $value); |
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} |
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} |
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elseif ( ! in_array($value, $base)) { |
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$base[] = $value; |
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} |
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} |
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} |
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return $base; |
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} |
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/** |
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* Tests if $array is an associative array. |
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* |
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* @param array $array |
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* @return boolean Returns true if just one key is a string, false otherwise. |
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*/ |
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public static function isAssociative(array $array) |
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{ |
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return count(array_filter(array_keys($array), 'is_string')) > 0; |
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} |
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} |
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dankempster /
axstrad-common
