Arr::swapKeysFn() - Code Metrics - elegantmedia/PHP-Toolkit - Measure and Improve Code Quality continuously with Scrutinizer

Arr::swapKeysFn() A
last analyzed 2025-06-09 07:57 UTC

↳ Parent: Arr

Complexity

Conditions	5
Paths	4

Size

Total Lines	28
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	5

Importance

Changes

Metric	Value
eloc	16
c	0
b	0
f	0
dl	0
loc	28
ccs	6
cts	6
cp	1
rs	9.4222
cc	5
nc	4
nop	3
crap	5

<?php

namespace ElegantMedia\PHPToolkit;

class Arr
{
	/**
	 * Is the array an associative array?
	 *
	 * @param $input
	 *
	 * @return bool
	 */
	public static function isAssoc($input): bool
	{
		if (!is_array($input)) {
			return false;
		}

		return array_keys($input) !== range(0, count($input) - 1);
	}

	/**
	 * Find matching structure on a nested array recursively.
	 *
	 * @param       $subset
	 * @param       $array
	 * @param array $results
	 *
	 * @return array
	 */
	public static function intersectRecursive($array, $subset, $results = []): array
	{
		$isAssocArray = self::isAssoc($subset);

		if ($isAssocArray) {
			// loop each row of array
			// iterating through parents
			foreach ($subset as $key => $value) {
				if ($key) {
					if (isset($array[$key])) {
						$filteredSource = $array[$key];

						//if the value is array, it will do the recursive
						if (is_array($value)) {
							$loopResults = self::intersectRecursive($filteredSource, $subset[$key], $results);
							$results[$key] = $loopResults;
						}
					}
				}
			}
		} else {
			// iterate through final leaf nodes
			foreach ($subset as $subsetRow) {
				foreach ($array as $sourceRow) {
					$subsetRow = self::removeChildArrays($subsetRow);
					$sourceRow = self::removeChildArrays($sourceRow);
					if (array_intersect($subsetRow, $sourceRow) == $subsetRow) {
						$results[] = $subsetRow;
					}
				}
			}
		}

		return $results;
	}

	public static function removeChildArrays($array): array
	{
		$response = [];
		foreach ($array as $key => $value) {
			if (is_array($value)) {
				$response[$key] = json_encode($value);
			} else {
				$response[$key] = $value;
			}
		}

		return $response;
	}

	/**
	 * Implode but don't include empty values.
	 *
	 * @param $glue
	 * @param $pieces
	 *
	 * @return string
	 */
	public static function implodeIgnoreEmpty($glue, $pieces): string
	{
		// remove empty values
		$pieces = array_filter($pieces);

		return implode($glue, $pieces);
	}

	/**
	 * Replace an existing key of an array with a new one, recursively if required.
	 *
	 * @param array $array
	 * @param       $existingKey
	 * @param       $newKey
	 * @param bool  $recursive
	 *
	 * @return array
	 */
	public static function swapKey(array $array, $existingKey, $newKey, $recursive = false): array
	{
		$allArrayData = [];
		foreach ($array as $item) {
			$arrayData = $item;
			if (array_key_exists($existingKey, $arrayData)) {
				$arrayData[$newKey] = $arrayData[$existingKey];
				unset($arrayData[$existingKey]);
			}

			// do this recursively
			if ($recursive) {
				if (isset($arrayData[$newKey]) && is_array($arrayData[$newKey]) && count($arrayData[$newKey])) {
					$arrayData[$newKey] = self::swapKey($arrayData[$newKey], $existingKey, $newKey, true);
				}
			}

			$allArrayData[] = $arrayData;
		}

		return $allArrayData;
	}

	/**
	 * Replace keys of a given array based on a given function
	 * Based on http://stackoverflow.com/questions/1444484/how-to-convert-all-keys-in-a-multi-dimenional-array-to-snake-case.
	 *
	 * @param mixed     $mixed
	 * @param callable  $keyReplaceFunction
	 * @param bool|true $recursive
	 */
	public static function swapKeysFn(&$mixed, callable $keyReplaceFunction, $recursive = true): void
	{
		if (is_array($mixed)) {
			foreach (array_keys($mixed) as $key) :
				# Working with references here to avoid copying the value,
				# Since input data can be large
				$value = &$mixed[$key];
				unset($mixed[$key]);

				#  - camelCase to snake_case
				$transformedKey = $keyReplaceFunction($key);

				# Work recursively
				if ($recursive && is_array($value)) {
					self::swapKeysFn($value, $keyReplaceFunction, $recursive);
				}

				# Store with new key
				$mixed[$transformedKey] = $value;
				# Do not forget to unset references!
				unset($value);
			endforeach;
		} else {
			$newVal = preg_replace('/[A-Z]/', '_$0', $mixed);
			$newVal = strtolower($newVal);
			$newVal = ltrim($newVal, '_');
			$mixed = $newVal;
			unset($newVal);
		}
	}

	/**
	 * Get an array and key it by a given key.
	 *
	 * @example
	 * [
	 *        [ 'name' => 'john', 'age' => 45 ],
	 *        [ 'name' => 'jane', 'age', => 32 ],
	 * ]
	 * $people = Arr::keyBy($rows, 'name');
	 *
	 * becomes
	 * [
	 *        'john' => [ 'age' => 45 ],
	 *        'jane' => [ 'age' => 32 ],
	 * ]
	 *
	 * @param $array
	 * @param $keyBy
	 *
	 * @return array
	 */
	public static function keyBy($array, $keyBy): array
	{
		$newValues = [];

		foreach ($array as $key => $value) {
			if (is_array($value)) {
				if (isset($value[$keyBy]) && $value[$keyBy] !== '') {
					$newValues[$value[$keyBy]][] = $value;
				}
			}
		}

		return $newValues;
	}
}


1		<?php
2
3		namespace ElegantMedia\PHPToolkit;
4
5		class Arr
6		{
7		/**
8		* Is the array an associative array?
9		*
10		* @param $input
11		*
12		* @return bool
13		*/
14		public static function isAssoc($input): bool
15		{
16		if (!is_array($input)) {
17	27	return false;
18		}
19	27
20	3	return array_keys($input) !== range(0, count($input) - 1);
21		}
22	24
23		/**
24		* Find matching structure on a nested array recursively.
25		*
26		* @param $subset
27		* @param $array
28		* @param array $results
29		*
30		* @return array
31		*/
32		public static function intersectRecursive($array, $subset, $results = []): array
33		{
34		$isAssocArray = self::isAssoc($subset);
35
36	21	if ($isAssocArray) {
37		// loop each row of array
38	21	// iterating through parents
39		foreach ($subset as $key => $value) {
40	21	if ($key) {
41		if (isset($array[$key])) {
42		$filteredSource = $array[$key];
43	12
44	12	//if the value is array, it will do the recursive
45	12	if (is_array($value)) {
46	12	$loopResults = self::intersectRecursive($filteredSource, $subset[$key], $results);
47		$results[$key] = $loopResults;
48		}
49	12	}
50	12	}
51	12	}
52		} else {
53		// iterate through final leaf nodes
54		foreach ($subset as $subsetRow) {
55		foreach ($array as $sourceRow) {
56		$subsetRow = self::removeChildArrays($subsetRow);
57		$sourceRow = self::removeChildArrays($sourceRow);
58	21	if (array_intersect($subsetRow, $sourceRow) == $subsetRow) {
59	21	$results[] = $subsetRow;
60	21	}
61	21	}
62	21	}
63	18	}
64
65		return $results;
66		}
67
68		public static function removeChildArrays($array): array
69	21	{
70		$response = [];
71		foreach ($array as $key => $value) {
72		if (is_array($value)) {
73	21	$response[$key] = json_encode($value);
74		} else {
75	21	$response[$key] = $value;
76	21	}
77	21	}
78	3
79		return $response;
80	21	}
81
82		/**
83	21	* Implode but don't include empty values.
84		*
85		* @param $glue
86		* @param $pieces
87		*
88		* @return string
89		*/
90		public static function implodeIgnoreEmpty($glue, $pieces): string
91		{
92		// remove empty values
93		$pieces = array_filter($pieces);
94
95	3	return implode($glue, $pieces);
96		}
97
98	3	/**
99		* Replace an existing key of an array with a new one, recursively if required.
100	3	*
101		* @param array $array
102		* @param $existingKey
103		* @param $newKey
104		* @param bool $recursive
105		*
106		* @return array
107		*/
108		public static function swapKey(array $array, $existingKey, $newKey, $recursive = false): array
109		{
110		$allArrayData = [];
111		foreach ($array as $item) {
112		$arrayData = $item;
113	6	if (array_key_exists($existingKey, $arrayData)) {
114		$arrayData[$newKey] = $arrayData[$existingKey];
115	6	unset($arrayData[$existingKey]);
116	6	}
117	6
118	6	// do this recursively
119	6	if ($recursive) {
120	6	if (isset($arrayData[$newKey]) && is_array($arrayData[$newKey]) && count($arrayData[$newKey])) {
121		$arrayData[$newKey] = self::swapKey($arrayData[$newKey], $existingKey, $newKey, true);
122		}
123		}
124	6
125	3	$allArrayData[] = $arrayData;
126	3	}
127
128		return $allArrayData;
129		}
130	6
131		/**
132	6	* Replace keys of a given array based on a given function
133		* Based on http://stackoverflow.com/questions/1444484/how-to-convert-all-keys-in-a-multi-dimenional-array-to-snake-case.
134		*
135		* @param mixed $mixed
136		* @param callable $keyReplaceFunction
137		* @param bool\|true $recursive
138		*/
139		public static function swapKeysFn(&$mixed, callable $keyReplaceFunction, $recursive = true): void
140		{
141		if (is_array($mixed)) {
142		foreach (array_keys($mixed) as $key) :
143		# Working with references here to avoid copying the value,
144		# Since input data can be large
145		$value = &$mixed[$key];
146		unset($mixed[$key]);
147
148		# - camelCase to snake_case
149		$transformedKey = $keyReplaceFunction($key);
150
151		# Work recursively
152		if ($recursive && is_array($value)) {
153		self::swapKeysFn($value, $keyReplaceFunction, $recursive);
154		}
155
156		# Store with new key
157	3	$mixed[$transformedKey] = $value;
158		# Do not forget to unset references!
159	3	unset($value);
160		endforeach;
161	3	} else {
162	3	$newVal = preg_replace('/[A-Z]/', '_$0', $mixed);
163	3	$newVal = strtolower($newVal);
164	3	$newVal = ltrim($newVal, '_');
165		$mixed = $newVal;
166		unset($newVal);
167		}
168		}
169	3
170		/**
171		* Get an array and key it by a given key.
172		*
173		* @example
174		* [
175		* [ 'name' => 'john', 'age' => 45 ],
176		* [ 'name' => 'jane', 'age', => 32 ],
177		* ]
178		* $people = Arr::keyBy($rows, 'name');
179		*
180		* becomes
181		* [
182		* 'john' => [ 'age' => 45 ],
183		* 'jane' => [ 'age' => 32 ],
184		* ]
185		*
186		* @param $array
187		* @param $keyBy
188		*
189		* @return array
190		*/
191		public static function keyBy($array, $keyBy): array
192		{
193		$newValues = [];
194
195		foreach ($array as $key => $value) {
196		if (is_array($value)) {
197		if (isset($value[$keyBy]) && $value[$keyBy] !== '') {
198		$newValues[$value[$keyBy]][] = $value;
199		}
200		}
201		}
202
203		return $newValues;
204		}
205		}
206

elegantmedia / PHP-Toolkit

Arr::swapKeysFn() A last analyzed 2025-06-09 07:57 UTC

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Arr::swapKeysFn() A
last analyzed 2025-06-09 07:57 UTC