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314 lines
8.8 KiB
PHP
314 lines
8.8 KiB
PHP
<?php
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/**
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* @see https://github.com/laminas/laminas-stdlib for the canonical source repository
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* @copyright https://github.com/laminas/laminas-stdlib/blob/master/COPYRIGHT.md
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* @license https://github.com/laminas/laminas-stdlib/blob/master/LICENSE.md New BSD License
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*/
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namespace Laminas\Stdlib;
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use Laminas\Stdlib\ArrayUtils\MergeRemoveKey;
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use Laminas\Stdlib\ArrayUtils\MergeReplaceKeyInterface;
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use Traversable;
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/**
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* Utility class for testing and manipulation of PHP arrays.
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*
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* Declared abstract, as we have no need for instantiation.
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*/
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abstract class ArrayUtils
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{
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/**
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* Compatibility Flag for ArrayUtils::filter
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*/
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const ARRAY_FILTER_USE_BOTH = 1;
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/**
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* Compatibility Flag for ArrayUtils::filter
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*/
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const ARRAY_FILTER_USE_KEY = 2;
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/**
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* Test whether an array contains one or more string keys
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*
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* @param mixed $value
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* @param bool $allowEmpty Should an empty array() return true
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* @return bool
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*/
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public static function hasStringKeys($value, $allowEmpty = false)
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{
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if (! is_array($value)) {
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return false;
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}
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if (! $value) {
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return $allowEmpty;
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}
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return count(array_filter(array_keys($value), 'is_string')) > 0;
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}
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/**
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* Test whether an array contains one or more integer keys
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*
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* @param mixed $value
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* @param bool $allowEmpty Should an empty array() return true
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* @return bool
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*/
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public static function hasIntegerKeys($value, $allowEmpty = false)
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{
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if (! is_array($value)) {
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return false;
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}
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if (! $value) {
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return $allowEmpty;
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}
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return count(array_filter(array_keys($value), 'is_int')) > 0;
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}
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/**
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* Test whether an array contains one or more numeric keys.
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*
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* A numeric key can be one of the following:
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* - an integer 1,
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* - a string with a number '20'
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* - a string with negative number: '-1000'
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* - a float: 2.2120, -78.150999
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* - a string with float: '4000.99999', '-10.10'
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*
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* @param mixed $value
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* @param bool $allowEmpty Should an empty array() return true
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* @return bool
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*/
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public static function hasNumericKeys($value, $allowEmpty = false)
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{
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if (! is_array($value)) {
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return false;
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}
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if (! $value) {
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return $allowEmpty;
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}
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return count(array_filter(array_keys($value), 'is_numeric')) > 0;
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}
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/**
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* Test whether an array is a list
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*
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* A list is a collection of values assigned to continuous integer keys
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* starting at 0 and ending at count() - 1.
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*
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* For example:
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* <code>
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* $list = array('a', 'b', 'c', 'd');
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* $list = array(
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* 0 => 'foo',
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* 1 => 'bar',
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* 2 => array('foo' => 'baz'),
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* );
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* </code>
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*
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* @param mixed $value
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* @param bool $allowEmpty Is an empty list a valid list?
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* @return bool
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*/
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public static function isList($value, $allowEmpty = false)
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{
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if (! is_array($value)) {
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return false;
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}
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if (! $value) {
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return $allowEmpty;
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}
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return (array_values($value) === $value);
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}
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/**
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* Test whether an array is a hash table.
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*
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* An array is a hash table if:
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*
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* 1. Contains one or more non-integer keys, or
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* 2. Integer keys are non-continuous or misaligned (not starting with 0)
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*
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* For example:
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* <code>
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* $hash = array(
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* 'foo' => 15,
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* 'bar' => false,
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* );
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* $hash = array(
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* 1995 => 'Birth of PHP',
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* 2009 => 'PHP 5.3.0',
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* 2012 => 'PHP 5.4.0',
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* );
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* $hash = array(
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* 'formElement,
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* 'options' => array( 'debug' => true ),
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* );
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* </code>
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*
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* @param mixed $value
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* @param bool $allowEmpty Is an empty array() a valid hash table?
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* @return bool
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*/
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public static function isHashTable($value, $allowEmpty = false)
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{
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if (! is_array($value)) {
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return false;
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}
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if (! $value) {
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return $allowEmpty;
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}
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return (array_values($value) !== $value);
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}
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/**
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* Checks if a value exists in an array.
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*
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* Due to "foo" == 0 === TRUE with in_array when strict = false, an option
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* has been added to prevent this. When $strict = 0/false, the most secure
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* non-strict check is implemented. if $strict = -1, the default in_array
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* non-strict behaviour is used.
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*
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* @param mixed $needle
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* @param array $haystack
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* @param int|bool $strict
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* @return bool
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*/
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public static function inArray($needle, array $haystack, $strict = false)
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{
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if (! $strict) {
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if (is_int($needle) || is_float($needle)) {
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$needle = (string) $needle;
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}
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if (is_string($needle)) {
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foreach ($haystack as &$h) {
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if (is_int($h) || is_float($h)) {
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$h = (string) $h;
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}
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}
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}
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}
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return in_array($needle, $haystack, $strict);
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}
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/**
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* Convert an iterator to an array.
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*
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* Converts an iterator to an array. The $recursive flag, on by default,
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* hints whether or not you want to do so recursively.
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*
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* @param array|Traversable $iterator The array or Traversable object to convert
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* @param bool $recursive Recursively check all nested structures
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* @throws Exception\InvalidArgumentException if $iterator is not an array or a Traversable object
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* @return array
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*/
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public static function iteratorToArray($iterator, $recursive = true)
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{
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if (! is_array($iterator) && ! $iterator instanceof Traversable) {
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throw new Exception\InvalidArgumentException(__METHOD__ . ' expects an array or Traversable object');
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}
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if (! $recursive) {
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if (is_array($iterator)) {
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return $iterator;
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}
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return iterator_to_array($iterator);
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}
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if (method_exists($iterator, 'toArray')) {
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return $iterator->toArray();
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}
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$array = [];
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foreach ($iterator as $key => $value) {
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if (is_scalar($value)) {
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$array[$key] = $value;
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continue;
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}
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if ($value instanceof Traversable) {
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$array[$key] = static::iteratorToArray($value, $recursive);
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continue;
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}
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if (is_array($value)) {
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$array[$key] = static::iteratorToArray($value, $recursive);
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continue;
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}
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$array[$key] = $value;
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}
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return $array;
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}
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/**
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* Merge two arrays together.
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*
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* If an integer key exists in both arrays and preserveNumericKeys is false, the value
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* from the second array will be appended to the first array. If both values are arrays, they
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* are merged together, else the value of the second array overwrites the one of the first array.
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*
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* @param array $a
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* @param array $b
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* @param bool $preserveNumericKeys
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* @return array
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*/
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public static function merge(array $a, array $b, $preserveNumericKeys = false)
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{
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foreach ($b as $key => $value) {
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if ($value instanceof MergeReplaceKeyInterface) {
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$a[$key] = $value->getData();
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} elseif (isset($a[$key]) || array_key_exists($key, $a)) {
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if ($value instanceof MergeRemoveKey) {
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unset($a[$key]);
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} elseif (! $preserveNumericKeys && is_int($key)) {
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$a[] = $value;
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} elseif (is_array($value) && is_array($a[$key])) {
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$a[$key] = static::merge($a[$key], $value, $preserveNumericKeys);
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} else {
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$a[$key] = $value;
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}
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} else {
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if (! $value instanceof MergeRemoveKey) {
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$a[$key] = $value;
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}
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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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* @deprecated Since 3.2.0; use the native array_filter methods
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*
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* @param array $data
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* @param callable $callback
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* @param null|int $flag
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* @return array
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* @throws Exception\InvalidArgumentException
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*/
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public static function filter(array $data, $callback, $flag = null)
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{
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if (! is_callable($callback)) {
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throw new Exception\InvalidArgumentException(sprintf(
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'Second parameter of %s must be callable',
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__METHOD__
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));
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}
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return array_filter($data, $callback, $flag);
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}
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}
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