Collection::intersectKey() - Code Metrics - Inspection of "Merge pull request #3 from open-source-contributio..." - idimsh/collection - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 23b33a...30679a )

by Abdulrahman

created 2019-08-25 20:53 UTC

Collection::intersectKey() A

↳ Parent: Collection

Complexity

Conditions	3
Paths	3

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes

Metric	Value
dl	0
loc	10
ccs	8
cts	8
cp	1
rs	9.9332
c	0
b	0
f	0
cc	3
nc	3
nop	1
crap	3

<?php
/*
 * This file is part of Dimsh\Models\Collections;
 * (c) Abdulrahman Dimashki <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Dimsh\Models\Collections;

/**
 * Class Collection
 *
 * @method {} offsetGet();
 * @method {} @current()
 * @method {} @last()
 * @method {} @first()
 *
 * @package Dimsh\Models\Collections;
 */
class Collection implements \Iterator, \ArrayAccess, \Countable
{
    /**
     * @var array
     */
    protected $list = [];

    /**
     * @var int
     */
    protected $position = 0;

    /**
     * this is required for the unset() <=> offsetUnset() where an exception is
     * thrown if next() or rewind() is not called after unset.
     * @var bool
     */
    protected $next_or_rewind_required = false;

    public function __construct()
    {
        $this->position = 0;
    }

    /**
     * @return int
     */
    public function count()
    {
        return count($this->list);
    }

    /**
     * This method is meant to be overridden by child Classes in order to throw
     * an Exception if the value can't be added, else it will be added normally.
     *
     * @param mixed $value
     */
    protected function preAdd($value)
    {
    }

    /**
     * Get the next numeric offset.
     *
     * we get the MAX numeric offset we have and increment it by 1.
     */
    protected function nextOffset()
    {
        $keys = array_keys($this->list);
        $keys = array_filter($keys, 'is_numeric'); // get numeric keys only
        if ($keys) {

            $last_key = max($keys);
        } else {
            $last_key = -1;
        }
        return $last_key + 1;
    }

    /**
     * @param string|int $offset
     * @param mixed      $value
     *
     * @throws \Exception
     */
    public function offsetSet($offset, $value)
    {
        if ($offset === null) {
            // a value is appended using [] array append operator.
            $offset = $this->nextOffset();
        }
        $this->preAdd($value);
        $this->list[$offset] = &$value;
    }

    /**
     * This is not in the interface, add an item.
     * @return self
     * @throws \Exception
     */
    public function add($item)
    {
        $this->offsetSet(null, $item);
        return $this;
    }

    /**
     * This is not in the interface, add an item passing it by reference.
     *
     * This will only accept variables as input.
     *
     * @return self
     * @throws \Exception
     */
    public function addByReference(&$item)
    {
        $this->preAdd($item);
        $this->list[$this->nextOffset()] = &$item;
        return $this;
    }

    /**
     * @param string|int $offset
     *
     * @return mixed|null
     */
    public function &offsetGet($offset)
    {
        if (array_key_exists($offset, $this->list)) {
            return $this->list[$offset];
        }
        $null = null;
        return $null;
    }

    /**
     * @return bool
     */
    public function offsetExists($offset)
    {
        return (array_key_exists($offset, $this->list));
    }

    public function offsetUnset($offset)
    {
        $offset_pos = $this->offsetPosition($offset);
        if ($offset_pos !== false && $this->position === $offset_pos) {
            $this->next_or_rewind_required = true;
            if ($this->position > 0) {
                $this->position--;
            }
        }
        unset($this->list[$offset]);
    }

    public function rewind()
    {
        $this->position                = 0;
        $this->next_or_rewind_required = false;
    }

    public function next()
    {
        ++$this->position;
        $this->next_or_rewind_required = false;
    }

    /**
     * This is not in the interface, go back in the array.
     */
    public function prev()
    {
        --$this->position;
        $this->next_or_rewind_required = false;
    }

    /**
     * @return bool
     */
    public function valid()
    {
        if (empty($this->list)) {
            return false;
        }
        return array_key_exists($this->position, array_keys($this->list));
    }

    public function current()
    {
        if ($this->next_or_rewind_required) {
            throw new \Exception('Calling next or rewind is required after call to unset, current item can\'t be accessed otherwise because it is removed.');
        }
        return $this->list[$this->key()];
    }

    /**
     * @return string
     */
    public function key()
    {
        $keys   = array_keys($this->list);
        $offset = $keys[$this->position];
        return $offset;
    }

    /**
     * @return int
     */
    public function position()
    {
        return $this->position;
    }

    /**
     * This is not in the interface, Get the last item.
     */
    public function last()
    {
        $keys   = array_keys($this->list);
        $offset = array_pop($keys);
        if (array_key_exists($offset, $this->list)) {
            return $this->list[$offset];
        }
        $null = null;
        return $null;
    }

    /**
     * This is not in the interface, Get the first item.
     */
    public function first()
    {
        $keys   = array_keys($this->list);
        $offset = array_shift($keys);
        if (array_key_exists($offset, $this->list)) {
            return $this->list[$offset];
        }
        $null = null;
        return $null;
    }

    /**
     * This is not in the interface, Return the keys of the internal list.
     *
     * @return array
     */
    public function keys()
    {
        return array_keys($this->list);
    }

    /**
     * This is not in the interface, cast the internal list to an array.
     *
     * @return array
     */
    public function toArray()
    {
        return $this->list;
    }


    /**
     * This is not in the interface, merge this object with another object and act
     * like array_merge, numeric indexes are added, other indexes are overridden.
     *
     * This method will alter the current object.
     *
     * @param Collection $another_list
     *
     * @return self
     *
     * @throws \Exception
     *
     */
    public function merge(Collection $another_list)
    {
        for ($another_list->rewind(); $another_list->valid(); $another_list->next()) {
            $key = $another_list->key();
            try {
                $this->offsetSet(is_numeric($key) ? null : $key, $another_list->current());
            } catch (\Exception $e) {
                throw $e;
            }
        }
        return $this;
    }

    /**
     * Change the position of item at $offset1 in the internal array to be at
     * the position of item at $offset2 and vise versa.
     *
     * @param $offset1
     * @param $offset2
     *
     * @return $this
     * @throws \Exception
     */
    public function swap($offset1, $offset2)
    {
        $pos1 = $this->offsetPosition($offset1);
        $pos2 = $this->offsetPosition($offset2);
        if ($pos1 === false || $pos2 === false) {
            // offset does not exist
            throw new \Exception("Trying to swap non exist offsets");
        }
        if ($pos1 == $pos2) {
            return $this;
        }
        $temp           = $this[$offset1];
        $this[$offset1] = $this[$offset2];
        $this[$offset2] = $temp;

        return $this;
    }

    /**
     * Change the position of item at $offset1 in the internal array to be at
     * the position of item at $offset2 and vise versa using re-order and refilling
     * the array
     *
     * @param $offset1
     * @param $offset2
     *
     * @return self
     *
     * @throws \Exception
     */
    public function swapReorder($offset1, $offset2)
    {
        $pos1 = $this->offsetPosition($offset1);
        $pos2 = $this->offsetPosition($offset2);
        if ($pos1 === false || $pos2 === false) {
            // offset does not exist
            throw new \Exception("Trying to swap non exist offsets");
        }
        if ($pos1 == $pos2) {
            return $this;
        }

        $clone = clone $this;
        for ($clone->rewind(); $clone->valid(); $clone->next()) {
            $key      = $clone->key();
            $curr_pos = $clone->position();
            if ($curr_pos === $pos1) {
                $this[$key] = $clone->offsetGet($offset2);
            } elseif ($curr_pos === $pos2) {
                $this[$key] = $clone->offsetGet($offset1);
            } else {
                $this[$key] = $clone->current();
            }
        }

        return $this;
    }


    /**
     * Get the item by internal pointer numeric position and not by the offset.
     *
     * This is not in the interface.
     *
     * @param int $pos
     *
     * @return null|mixed
     */
    public function byPositionGet($pos)
    {
        $keys = $this->keys();
        if (array_key_exists($pos, $keys)) {
            $offset = $keys[$pos];
            return $this->list[$offset];
        }

        return null;
    }

    /**
     * Get the internal pointer numeric position which corresponds to the
     * offset passed.
     * this is not in the interface
     *
     * @param $offset
     *
     * @return int|FALSE
     */
    public function offsetPosition($offset)
    {
        $keys = array_keys($this->list);
        $key  = array_search($offset, $keys);
        return $key;
    }

    /**
     * Check if this container is empty.
     *
     * This is not in the interface
     * @return bool
     */
    public function isEmpty()
    {
        return count($this) === 0;
    }

    /**
     * Perform array_diff_key against another list where the first parameter is
     * this collection and the second is the new list.
     *
     * This will return a new Collection.
     *
     * @param Collection $another_list
     *
     * @return Collection
     */
    public function diffKey(Collection $another_list)
    {
        $diff     = array_diff_key($this->toArray(), $another_list->toArray());
        $new_list = new static();
        foreach ($diff as $key => $value) {
            $new_list[$key] = $value;
        }
        return $new_list;
    }

    /**
     * A version of php array_diff_assoc which is recursive.
     *
     * array_diff_assoc — Computes the difference of arrays with additional index check
     *
     * @param array $array1
     * @param array $array2
     *
     * @return array
     */
    protected static function arrayDiffRecursiveAssoc(array $array1, array $array2)
    {
        $ret = array();

        foreach ($array1 as $key1 => $value1) {
            if (!array_key_exists($key1, $array2)) {
                $ret[$key1] = $value1;
                continue;
            }
            if (is_array($value1) && is_array($array2[$key1])) {
                $recursive_diff = self::arrayDiffRecursiveAssoc($value1, $array2[$key1]);
                if (count($recursive_diff)) {
                    $ret[$key1] = $recursive_diff;
                }
            } elseif ($value1 instanceof Collection && $array2[$key1] instanceof Collection) {
                $recursive_diff = $value1->diffRecursiveAssoc($array2[$key1]);
                if ($recursive_diff->count()) {
                    $ret[$key1] = $recursive_diff;
                }
            } elseif (!is_array($value1) && !is_array($array2[$key1])) {
                if ($value1 !== $array2[$key1]) {
                    $ret[$key1] = $value1;
                }
            } else {
                $ret[$key1] = $value1;
            }
        }
        return $ret;
    }

    /**
     * Return Recursive diff from another list with index check.
     *
     * The first array is this collection and compute the diff against the passed collection.
     *
     * This will return a new Collection.
     *
     * @param Collection $another_list
     *
     * @return static
     */
    public function diffRecursiveAssoc(Collection $another_list)
    {
        $ret  = new static();
        $diff = static::arrayDiffRecursiveAssoc($this->toArray(), $another_list->toArray());
        foreach ($diff as $key => $value) {
            $ret[$key] = $value;
        }
        return $ret;
    }

    /**
     * A version of php array_diff which is recursive.
     *
     * array_diff — Computes the difference of arrays
     *
     * This function is costy because it uses array_search
     *
     * @param array $array1
     * @param array $array2
     *
     * @return array
     */
    protected static function arrayDiffRecursive(array $array1, array $array2)
    {
        $ret = array();

        foreach ($array1 as $key1 => $value1) {
            if (false === ($key2 = array_search($value1, $array2, true))) {
                $ret[$key1] = $value1;
                continue;
            }
            if (is_array($value1) && is_array($array2[$key2])) {
                $recursive_diff = self::arrayDiffRecursive($value1, $array2[$key2]);
                if (count($recursive_diff)) {
                    $ret[$key1] = $recursive_diff;
                }
            } elseif ($value1 instanceof Collection && $array2[$key2] instanceof Collection) {
                $recursive_diff = $value1->diffRecursive($array2[$key2]);
                if ($recursive_diff->count()) {
                    $ret[$key1] = $recursive_diff;
                }
            } elseif (!is_array($value1) && !is_array($array2[$key2])) {
                if ($value1 !== $array2[$key2]) {
                    $ret[$key1] = $value1;
                }
            } else {
                $ret[$key1] = $value1;
            }
        }
        return $ret;
    }

    /**
     * Return Recursive diff from another list.
     *
     * The first array is this collection and compute the diff against the passed collection.
     *
     * This will return a new Collection.
     *
     * @param Collection $another_list
     *
     * @return static
     */
    public function diffRecursive(Collection $another_list)
    {
        $ret  = new static();
        $diff = static::arrayDiffRecursive($this->toArray(), $another_list->toArray());
        foreach ($diff as $key => $value) {
            $ret[$key] = $value;
        }
        return $ret;
    }

    /**
     * Implementation of array_intesect_key against another list.
     *
     * This will return a new Collection.
     *
     * @param Collection $another_list
     *
     * @return static
     */
    public function intersectKey(Collection $another_list)
    {
        $ret = new static();
        foreach ($this as $key => $value) {
            if ($another_list->offsetExists($key)) {
                $ret[$key] = $value;
            }
        }
        return $ret;
    }
}


1		<?php
2		/*
3		* This file is part of Dimsh\Models\Collections;
4		* (c) Abdulrahman Dimashki <[email protected]>
5		*
6		* For the full copyright and license information, please view the LICENSE
7		* file that was distributed with this source code.
8		*/
9
10		namespace Dimsh\Models\Collections;
11
12		/**
13		* Class Collection
14		*
15		* @method {} offsetGet();
16		* @method {} @current()
17		* @method {} @last()
18		* @method {} @first()
19		*
20		* @package Dimsh\Models\Collections;
21		*/
22		class Collection implements \Iterator, \ArrayAccess, \Countable
23		{
24		/**
25		* @var array
26		*/
27		protected $list = [];
28
29		/**
30		* @var int
31		*/
32		protected $position = 0;
33
34		/**
35		* this is required for the unset() <=> offsetUnset() where an exception is
36		* thrown if next() or rewind() is not called after unset.
37		* @var bool
38		*/
39		protected $next_or_rewind_required = false;
40
41	54	public function __construct()
42		{
43	54	$this->position = 0;
44	54	}
45
46		/**
47		* @return int
48		*/
49	3	public function count()
50		{
51	3	return count($this->list);
52		}
53
54		/**
55		* This method is meant to be overridden by child Classes in order to throw
56		* an Exception if the value can't be added, else it will be added normally.
57		*
58		* @param mixed $value
59		*/
60	36	protected function preAdd($value)
61		{
62	36	}
63
64		/**
65		* Get the next numeric offset.
66		*
67		* we get the MAX numeric offset we have and increment it by 1.
68		*/
69	30	protected function nextOffset()
70		{
71	30	$keys = array_keys($this->list);
72	30	$keys = array_filter($keys, 'is_numeric'); // get numeric keys only
73	30	if ($keys) {
		0 ignored issues – show Bug Best Practice introduced 2018-11-20 01:40 UTC by Report Bug Copy Issue Report The expression `$keys` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
74	15	$last_key = max($keys);
75	5	} else {
76	30	$last_key = -1;
77		}
78	30	return $last_key + 1;
79		}
80
81		/**
82		* @param string\|int $offset
83		* @param mixed $value
84		*
85		* @throws \Exception
86		*/
87	42	public function offsetSet($offset, $value)
88		{
89	42	if ($offset === null) {
90		// a value is appended using [] array append operator.
91	30	$offset = $this->nextOffset();
92	10	}
93	42	$this->preAdd($value);
94	39	$this->list[$offset] = &$value;
95	39	}
96
97		/**
98		* This is not in the interface, add an item.
99		* @return self
100		* @throws \Exception
101		*/
102	12	public function add($item)
103		{
104	12	$this->offsetSet(null, $item);
105	12	return $this;
106		}
107
108		/**
109		* This is not in the interface, add an item passing it by reference.
110		*
111		* This will only accept variables as input.
112		*
113		* @return self
114		* @throws \Exception
115		*/
116	3	public function addByReference(&$item)
117		{
118	3	$this->preAdd($item);
119	3	$this->list[$this->nextOffset()] = &$item;
120	3	return $this;
121		}
122
123		/**
124		* @param string\|int $offset
125		*
126		* @return mixed\|null
127		*/
128	21	public function &offsetGet($offset)
129		{
130	21	if (array_key_exists($offset, $this->list)) {
131	18	return $this->list[$offset];
132		}
133	3	$null = null;
134	3	return $null;
135		}
136
137		/**
138		* @return bool
139		*/
140	6	public function offsetExists($offset)
141		{
142	6	return (array_key_exists($offset, $this->list));
143		}
144
145	12	public function offsetUnset($offset)
146		{
147	12	$offset_pos = $this->offsetPosition($offset);
148	12	if ($offset_pos !== false && $this->position === $offset_pos) {
149	12	$this->next_or_rewind_required = true;
150	12	if ($this->position > 0) {
151		$this->position--;
152		}
153	4	}
154	12	unset($this->list[$offset]);
155	12	}
156
157	18	public function rewind()
158		{
159	18	$this->position = 0;
160	18	$this->next_or_rewind_required = false;
161	18	}
162
163	9	public function next()
164		{
165	9	++$this->position;
166	9	$this->next_or_rewind_required = false;
167	9	}
168
169		/**
170		* This is not in the interface, go back in the array.
171		*/
172	3	public function prev()
173		{
174	3	--$this->position;
175	3	$this->next_or_rewind_required = false;
176	3	}
177
178		/**
179		* @return bool
180		*/
181	12	public function valid()
182		{
183	12	if (empty($this->list)) {
184	6	return false;
185		}
186	6	return array_key_exists($this->position, array_keys($this->list));
187		}
188
189	21	public function current()
190		{
191	21	if ($this->next_or_rewind_required) {
192	3	throw new \Exception('Calling next or rewind is required after call to unset, current item can\'t be accessed otherwise because it is removed.');
193		}
194	18	return $this->list[$this->key()];
195		}
196
197		/**
198		* @return string
199		*/
200	18	public function key()
201		{
202	18	$keys = array_keys($this->list);
203	18	$offset = $keys[$this->position];
204	18	return $offset;
205		}
206
207		/**
208		* @return int
209		*/
210	3	public function position()
211		{
212	3	return $this->position;
213		}
214
215		/**
216		* This is not in the interface, Get the last item.
217		*/
218	6	public function last()
219		{
220	6	$keys = array_keys($this->list);
221	6	$offset = array_pop($keys);
222	6	if (array_key_exists($offset, $this->list)) {
223	3	return $this->list[$offset];
224		}
225	3	$null = null;
226	3	return $null;
227		}
228
229		/**
230		* This is not in the interface, Get the first item.
231		*/
232	6	public function first()
233		{
234	6	$keys = array_keys($this->list);
235	6	$offset = array_shift($keys);
236	6	if (array_key_exists($offset, $this->list)) {
237	3	return $this->list[$offset];
238		}
239	3	$null = null;
240	3	return $null;
241		}
242
243		/**
244		* This is not in the interface, Return the keys of the internal list.
245		*
246		* @return array
247		*/
248	3	public function keys()
249		{
250	3	return array_keys($this->list);
251		}
252
253		/**
254		* This is not in the interface, cast the internal list to an array.
255		*
256		* @return array
257		*/
258	9	public function toArray()
259		{
260	9	return $this->list;
261		}
262
263
264		/**
265		* This is not in the interface, merge this object with another object and act
266		* like array_merge, numeric indexes are added, other indexes are overridden.
267		*
268		* This method will alter the current object.
269		*
270		* @param Collection $another_list
271		*
272		* @return self
273		*
274		* @throws \Exception
275		*
276		*/
277	3	public function merge(Collection $another_list)
278		{
279	3	for ($another_list->rewind(); $another_list->valid(); $another_list->next()) {
280		$key = $another_list->key();
281		try {
282		$this->offsetSet(is_numeric($key) ? null : $key, $another_list->current());
283		} catch (\Exception $e) {
284		throw $e;
285		}
286		}
287	3	return $this;
288		}
289
290		/**
291		* Change the position of item at $offset1 in the internal array to be at
292		* the position of item at $offset2 and vise versa.
293		*
294		* @param $offset1
295		* @param $offset2
296		*
297		* @return $this
298		* @throws \Exception
299		*/
300	3	public function swap($offset1, $offset2)
301		{
302	3	$pos1 = $this->offsetPosition($offset1);
303	3	$pos2 = $this->offsetPosition($offset2);
304	3	if ($pos1 === false \|\| $pos2 === false) {
305		// offset does not exist
306		throw new \Exception("Trying to swap non exist offsets");
307		}
308	3	if ($pos1 == $pos2) {
309		return $this;
310		}
311	3	$temp = $this[$offset1];
312	3	$this[$offset1] = $this[$offset2];
313	3	$this[$offset2] = $temp;
314
315	3	return $this;
316		}
317
318		/**
319		* Change the position of item at $offset1 in the internal array to be at
320		* the position of item at $offset2 and vise versa using re-order and refilling
321		* the array
322		*
323		* @param $offset1
324		* @param $offset2
325		*
326		* @return self
327		*
328		* @throws \Exception
329		*/
330	3	public function swapReorder($offset1, $offset2)
331		{
332	3	$pos1 = $this->offsetPosition($offset1);
333	3	$pos2 = $this->offsetPosition($offset2);
334	3	if ($pos1 === false \|\| $pos2 === false) {
335		// offset does not exist
336		throw new \Exception("Trying to swap non exist offsets");
337		}
338	3	if ($pos1 == $pos2) {
339		return $this;
340		}
341
342	3	$clone = clone $this;
343	3	for ($clone->rewind(); $clone->valid(); $clone->next()) {
344	3	$key = $clone->key();
345	3	$curr_pos = $clone->position();
346	3	if ($curr_pos === $pos1) {
347	3	$this[$key] = $clone->offsetGet($offset2);
348	3	} elseif ($curr_pos === $pos2) {
349	3	$this[$key] = $clone->offsetGet($offset1);
350	1	} else {
351	3	$this[$key] = $clone->current();
352		}
353	1	}
354
355	3	return $this;
356		}
357
358
359		/**
360		* Get the item by internal pointer numeric position and not by the offset.
361		*
362		* This is not in the interface.
363		*
364		* @param int $pos
365		*
366		* @return null\|mixed
367		*/
368		public function byPositionGet($pos)
369		{
370		$keys = $this->keys();
371		if (array_key_exists($pos, $keys)) {
372		$offset = $keys[$pos];
373		return $this->list[$offset];
374		}
375
376		return null;
377		}
378
379		/**
380		* Get the internal pointer numeric position which corresponds to the
381		* offset passed.
382		* this is not in the interface
383		*
384		* @param $offset
385		*
386		* @return int\|FALSE
387		*/
388	15	public function offsetPosition($offset)
389		{
390	15	$keys = array_keys($this->list);
391	15	$key = array_search($offset, $keys);
392	15	return $key;
393		}
394
395		/**
396		* Check if this container is empty.
397		*
398		* This is not in the interface
399		* @return bool
400		*/
401		public function isEmpty()
402		{
403		return count($this) === 0;
404		}
405
406		/**
407		* Perform array_diff_key against another list where the first parameter is
408		* this collection and the second is the new list.
409		*
410		* This will return a new Collection.
411		*
412		* @param Collection $another_list
413		*
414		* @return Collection
415		*/
416	3	public function diffKey(Collection $another_list)
417		{
418	3	$diff = array_diff_key($this->toArray(), $another_list->toArray());
419	3	$new_list = new static();
420	3	foreach ($diff as $key => $value) {
421	3	$new_list[$key] = $value;
422	1	}
423	3	return $new_list;
424		}
425
426		/**
427		* A version of php array_diff_assoc which is recursive.
428		*
429		* array_diff_assoc — Computes the difference of arrays with additional index check
430		*
431		* @param array $array1
432		* @param array $array2
433		*
434		* @return array
435		*/
436		protected static function arrayDiffRecursiveAssoc(array $array1, array $array2)
437		{
438		$ret = array();
439
440		foreach ($array1 as $key1 => $value1) {
441		if (!array_key_exists($key1, $array2)) {
442		$ret[$key1] = $value1;
443		continue;
444		}
445		if (is_array($value1) && is_array($array2[$key1])) {
446		$recursive_diff = self::arrayDiffRecursiveAssoc($value1, $array2[$key1]);
447		if (count($recursive_diff)) {
448		$ret[$key1] = $recursive_diff;
449		}
450		} elseif ($value1 instanceof Collection && $array2[$key1] instanceof Collection) {
451		$recursive_diff = $value1->diffRecursiveAssoc($array2[$key1]);
452		if ($recursive_diff->count()) {
453		$ret[$key1] = $recursive_diff;
454		}
455		} elseif (!is_array($value1) && !is_array($array2[$key1])) {
456		if ($value1 !== $array2[$key1]) {
457		$ret[$key1] = $value1;
458		}
459		} else {
460		$ret[$key1] = $value1;
461		}
462		}
463		return $ret;
464		}
465
466		/**
467		* Return Recursive diff from another list with index check.
468		*
469		* The first array is this collection and compute the diff against the passed collection.
470		*
471		* This will return a new Collection.
472		*
473		* @param Collection $another_list
474		*
475		* @return static
476		*/
477		public function diffRecursiveAssoc(Collection $another_list)
478		{
479		$ret = new static();
480		$diff = static::arrayDiffRecursiveAssoc($this->toArray(), $another_list->toArray());
481		foreach ($diff as $key => $value) {
482		$ret[$key] = $value;
483		}
484		return $ret;
485		}
486
487		/**
488		* A version of php array_diff which is recursive.
489		*
490		* array_diff — Computes the difference of arrays
491		*
492		* This function is costy because it uses array_search
493		*
494		* @param array $array1
495		* @param array $array2
496		*
497		* @return array
498		*/
499	3	protected static function arrayDiffRecursive(array $array1, array $array2)
500		{
501	3	$ret = array();
502
503	3	foreach ($array1 as $key1 => $value1) {
504	3	if (false === ($key2 = array_search($value1, $array2, true))) {
505	3	$ret[$key1] = $value1;
506	3	continue;
507		}
508	3	if (is_array($value1) && is_array($array2[$key2])) {
509		$recursive_diff = self::arrayDiffRecursive($value1, $array2[$key2]);
510		if (count($recursive_diff)) {
511		$ret[$key1] = $recursive_diff;
512		}
513	3	} elseif ($value1 instanceof Collection && $array2[$key2] instanceof Collection) {
514		$recursive_diff = $value1->diffRecursive($array2[$key2]);
515		if ($recursive_diff->count()) {
516		$ret[$key1] = $recursive_diff;
517		}
518	3	} elseif (!is_array($value1) && !is_array($array2[$key2])) {
519	3	if ($value1 !== $array2[$key2]) {
520	2	$ret[$key1] = $value1;
521		}
522	1	} else {
523	1	$ret[$key1] = $value1;
524		}
525	1	}
526	3	return $ret;
527		}
528
529		/**
530		* Return Recursive diff from another list.
531		*
532		* The first array is this collection and compute the diff against the passed collection.
533		*
534		* This will return a new Collection.
535		*
536		* @param Collection $another_list
537		*
538		* @return static
539		*/
540	3	public function diffRecursive(Collection $another_list)
541		{
542	3	$ret = new static();
543	3	$diff = static::arrayDiffRecursive($this->toArray(), $another_list->toArray());
544	3	foreach ($diff as $key => $value) {
545	3	$ret[$key] = $value;
546	1	}
547	3	return $ret;
548		}
549
550		/**
551		* Implementation of array_intesect_key against another list.
552		*
553		* This will return a new Collection.
554		*
555		* @param Collection $another_list
556		*
557		* @return static
558		*/
559	3	public function intersectKey(Collection $another_list)
560		{
561	3	$ret = new static();
562	3	foreach ($this as $key => $value) {
563	3	if ($another_list->offsetExists($key)) {
564	3	$ret[$key] = $value;
565	1	}
566	1	}
567	3	return $ret;
568		}
569		}
570

idimsh / collection

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Collection::intersectKey() A

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