Arrays::unique() - Code Metrics - Inspection of "Merge pull request #7 from chadicus/fea/unique" - traderinteractive/filter-arrays-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( da4b4a...f70588 )

by Chad

created 2020-09-22 21:09 UTC

Arrays::unique() A

↳ Parent: Arrays

Complexity

Conditions	3
Paths	2

Size

Total Lines	12
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	5
nc	2
nop	3
dl	0
loc	12
rs	10
c	0
b	0
f	0

<?php

namespace TraderInteractive\Filter;

use InvalidArgumentException;
use TraderInteractive\Exceptions\FilterException;
use TraderInteractive\Filter\Exceptions\DuplicateValuesException;

/**
 * A collection of filters for arrays.
 */
final class Arrays
{
    /**
     * @var int
     */
    const ARRAY_PAD_END = 1;

    /**
     * @var int
     */
    const ARRAY_PAD_FRONT = 2;

    /**
     * @var int
     */
    const ARRAY_UNIQUE_SORT_REGULAR = \SORT_REGULAR;

    /**
     * @var int
     */
    const ARRAY_UNIQUE_SORT_NUMERIC = \SORT_NUMERIC;

    /**
     * @var int
     */
    const ARRAY_UNIQUE_SORT_STRING = \SORT_STRING;

    /**
     * @var int
     */
    const ARRAY_UNIQUE_SORT_LOCALE_STRING = \SORT_LOCALE_STRING;

    /**
     * Filter an array by throwing if not an array or count not in the min/max range.
     *
     * @param mixed   $value    The value to filter.
     * @param integer $minCount The minimum allowed count in the array.
     * @param integer $maxCount The maximum allowed count in the array.
     *
     * @return array
     *
     * @throws FilterException if $value is not an array
     * @throws FilterException if $value count is less than $minCount
     * @throws FilterException if $value count is greater than $maxCount
     */
    public static function filter($value, int $minCount = 1, int $maxCount = PHP_INT_MAX) : array
    {
        if (!is_array($value)) {
            throw new FilterException("Value '" . trim(var_export($value, true), "'") . "' is not an array");
        }

        $count = count($value);
        if ($count < $minCount) {
            throw new FilterException("\$value count of {$count} is less than {$minCount}");
        }

        if ($count > $maxCount) {
            throw new FilterException("\$value count of {$count} is greater than {$maxCount}");
        }

        return $value;
    }

    /**
     * Filter an array by throwing if $value is not in $haystack adhering to $strict.
     *
     * @param mixed $value    The searched value.
     * @param array $haystack The array to be searched.
     * @param bool  $strict   Flag to compare strictly or not. @see in_array()
     *
     * @return mixed The passed in value
     *
     * @throws FilterException if $value is not in array $haystack
     */
    public static function in($value, array $haystack, bool $strict = true)
    {
        if (!in_array($value, $haystack, $strict)) {
            throw new FilterException(
                "Value '" . trim(var_export($value, true), "'") . "' is not in array " . var_export($haystack, true)
            );
        }

        return $value;
    }

    /**
     * Given a multi-dimensional array, flatten the array to a single level.
     *
     * The order of the values will be maintained, but the keys will not.
     *
     * For example, given the array [[1, 2], [3, [4, 5]]], this would result in the array [1, 2, 3, 4, 5].
     *
     * @param array $value The array to flatten.
     *
     * @return array The single-dimension array.
     */
    public static function flatten(array $value) : array
    {
        $result = [];

        $callBack = function ($item) use (&$result) {
            $result[] = $item;
        };

        array_walk_recursive($value, $callBack);

        return $result;
    }

    /**
     * Converts any non-array value to a single element array.
     *
     * @param mixed $value The value to convert.
     *
     * @return array The coverted array or the original value.
     */
    public static function arrayize($value) : array
    {
        if ($value === null) {
            return [];
        }

        if (!is_array($value)) {
            return [$value];
        }

        return $value;
    }

    /**
     * Copies values from the $source array into a new array using the $keyMap for destination keys.
     *
     * @param array[] $source The arrays with values to be copied.
     * @param array   $keyMap mapping of dest keys to source keys. If $keyMap is associative, the keys will be the
     *                        destination keys. If numeric the values will be the destination keys
     *
     * @return array
     */
    public static function copyEach(array $source, array $keyMap) : array
    {
        $result = [];
        foreach ($source as $sourceArray) {
            $result[] = self::copy($sourceArray, $keyMap);
        }

        return $result;
    }

    /**
     * Copies values from the $source array into a new array using the $keyMap for destination keys.
     *
     * @param array $source The array with values to be copied.
     * @param array $keyMap mapping of dest keys to source keys. If $keyMap is associative, the keys will be the
     *                      destination keys. If numeric the values will be the destination keys
     *
     * @return array
     */
    public static function copy(array $source, array $keyMap) : array
    {
        $result = [];
        foreach ($keyMap as $destinationKey => $sourceKey) {
            if (is_int($destinationKey)) {
                $destinationKey = $sourceKey;
            }

            if (array_key_exists($sourceKey, $source)) {
                $result[$destinationKey] = $source[$sourceKey];
            }
        }

        return $result;
    }

    /**
     * Pad array to the specified length with a value. Padding optionally to the front or end of the array.
     *
     * @param array $input    Initial array of values to pad.
     * @param int   $size     The new size of the array.
     * @param mixed $padValue Value to pad if $input is less than $size.
     * @param int   $padType  Optional argument to specify which end of the array to pad.
     *
     * @return array Returns a copy of the $input array padded to size specified by $size with value $padValue
     *
     * @throws InvalidArgumentException Thrown if $padType is invalid.
     */
    public static function pad(array $input, int $size, $padValue = null, int $padType = self::ARRAY_PAD_END) : array
    {
        if ($padType === self::ARRAY_PAD_END) {
            return array_pad($input, $size, $padValue);
        }

        if ($padType !== self::ARRAY_PAD_FRONT) {
            throw new InvalidArgumentException('Invalid $padType value provided');
        }

        while (count($input) < $size) {
            array_unshift($input, $padValue);
        }

        return $input;
    }

    /**
     * Removes duplicate values from an array.
     *
     * @param array $input     The array to be filtered.
     * @param int   $sortFlags Optional parameter used to modify the sorting behavior.
     * @param bool  $strict    If set to TRUE the filter will throw exception if the $input array contains duplicates.
     *
     * @return array
     *
     * @throws FilterException Thrown if the array contains duplicates and $strict is true.
     */
    public static function unique(
        array $input,
        int $sortFlags = self::ARRAY_UNIQUE_SORT_REGULAR,
        bool $strict = false
    ) : array {
        $unique = array_unique($input, $sortFlags);
        if ($unique !== $input && $strict === true) {
            $duplicateValues = self::findDuplicates($input);
            throw new DuplicateValuesException($duplicateValues);
        }

        return $unique;
    }

    private static function findDuplicates(array $input) : array
    {
        $temp = [];
        $duplicates = [];
        foreach ($input as $key => $value) {
            if (!in_array($value, $temp, true)) {
                $temp[] = $value;
                continue;
            }

            $duplicates[$key] = $value;
        }

        return $duplicates;
    }
}


1			<?php
2
3			namespace TraderInteractive\Filter;
4
5			use InvalidArgumentException;
6			use TraderInteractive\Exceptions\FilterException;
7			use TraderInteractive\Filter\Exceptions\DuplicateValuesException;
8
9			/**
10			* A collection of filters for arrays.
11			*/
12			final class Arrays
13			{
14			/**
15			* @var int
16			*/
17			const ARRAY_PAD_END = 1;
18
19			/**
20			* @var int
21			*/
22			const ARRAY_PAD_FRONT = 2;
23
24			/**
25			* @var int
26			*/
27			const ARRAY_UNIQUE_SORT_REGULAR = \SORT_REGULAR;
28
29			/**
30			* @var int
31			*/
32			const ARRAY_UNIQUE_SORT_NUMERIC = \SORT_NUMERIC;
33
34			/**
35			* @var int
36			*/
37			const ARRAY_UNIQUE_SORT_STRING = \SORT_STRING;
38
39			/**
40			* @var int
41			*/
42			const ARRAY_UNIQUE_SORT_LOCALE_STRING = \SORT_LOCALE_STRING;
43
44			/**
45			* Filter an array by throwing if not an array or count not in the min/max range.
46			*
47			* @param mixed $value The value to filter.
48			* @param integer $minCount The minimum allowed count in the array.
49			* @param integer $maxCount The maximum allowed count in the array.
50			*
51			* @return array
52			*
53			* @throws FilterException if $value is not an array
54			* @throws FilterException if $value count is less than $minCount
55			* @throws FilterException if $value count is greater than $maxCount
56			*/
57			public static function filter($value, int $minCount = 1, int $maxCount = PHP_INT_MAX) : array
58			{
59			if (!is_array($value)) {
60			throw new FilterException("Value '" . trim(var_export($value, true), "'") . "' is not an array");
61			}
62
63			$count = count($value);
64			if ($count < $minCount) {
65			throw new FilterException("\$value count of {$count} is less than {$minCount}");
66			}
67
68			if ($count > $maxCount) {
69			throw new FilterException("\$value count of {$count} is greater than {$maxCount}");
70			}
71
72			return $value;
73			}
74
75			/**
76			* Filter an array by throwing if $value is not in $haystack adhering to $strict.
77			*
78			* @param mixed $value The searched value.
79			* @param array $haystack The array to be searched.
80			* @param bool $strict Flag to compare strictly or not. @see in_array()
81			*
82			* @return mixed The passed in value
83			*
84			* @throws FilterException if $value is not in array $haystack
85			*/
86			public static function in($value, array $haystack, bool $strict = true)
87			{
88			if (!in_array($value, $haystack, $strict)) {
89			throw new FilterException(
90			"Value '" . trim(var_export($value, true), "'") . "' is not in array " . var_export($haystack, true)
91			);
92			}
93
94			return $value;
95			}
96
97			/**
98			* Given a multi-dimensional array, flatten the array to a single level.
99			*
100			* The order of the values will be maintained, but the keys will not.
101			*
102			* For example, given the array [[1, 2], [3, [4, 5]]], this would result in the array [1, 2, 3, 4, 5].
103			*
104			* @param array $value The array to flatten.
105			*
106			* @return array The single-dimension array.
107			*/
108			public static function flatten(array $value) : array
109			{
110			$result = [];
111
112			$callBack = function ($item) use (&$result) {
113			$result[] = $item;
114			};
115
116			array_walk_recursive($value, $callBack);
117
118			return $result;
119			}
120
121			/**
122			* Converts any non-array value to a single element array.
123			*
124			* @param mixed $value The value to convert.
125			*
126			* @return array The coverted array or the original value.
127			*/
128			public static function arrayize($value) : array
129			{
130			if ($value === null) {
131			return [];
132			}
133
134			if (!is_array($value)) {
135			return [$value];
136			}
137
138			return $value;
139			}
140
141			/**
142			* Copies values from the $source array into a new array using the $keyMap for destination keys.
143			*
144			* @param array[] $source The arrays with values to be copied.
145			* @param array $keyMap mapping of dest keys to source keys. If $keyMap is associative, the keys will be the
146			* destination keys. If numeric the values will be the destination keys
147			*
148			* @return array
149			*/
150			public static function copyEach(array $source, array $keyMap) : array
151			{
152			$result = [];
153			foreach ($source as $sourceArray) {
154			$result[] = self::copy($sourceArray, $keyMap);
155			}
156
157			return $result;
158			}
159
160			/**
161			* Copies values from the $source array into a new array using the $keyMap for destination keys.
162			*
163			* @param array $source The array with values to be copied.
164			* @param array $keyMap mapping of dest keys to source keys. If $keyMap is associative, the keys will be the
165			* destination keys. If numeric the values will be the destination keys
166			*
167			* @return array
168			*/
169			public static function copy(array $source, array $keyMap) : array
170			{
171			$result = [];
172			foreach ($keyMap as $destinationKey => $sourceKey) {
173			if (is_int($destinationKey)) {
174			$destinationKey = $sourceKey;
175			}
176
177			if (array_key_exists($sourceKey, $source)) {
178			$result[$destinationKey] = $source[$sourceKey];
179			}
180			}
181
182			return $result;
183			}
184
185			/**
186			* Pad array to the specified length with a value. Padding optionally to the front or end of the array.
187			*
188			* @param array $input Initial array of values to pad.
189			* @param int $size The new size of the array.
190			* @param mixed $padValue Value to pad if $input is less than $size.
191			* @param int $padType Optional argument to specify which end of the array to pad.
192			*
193			* @return array Returns a copy of the $input array padded to size specified by $size with value $padValue
194			*
195			* @throws InvalidArgumentException Thrown if $padType is invalid.
196			*/
197			public static function pad(array $input, int $size, $padValue = null, int $padType = self::ARRAY_PAD_END) : array
198			{
199			if ($padType === self::ARRAY_PAD_END) {
200			return array_pad($input, $size, $padValue);
201			}
202
203			if ($padType !== self::ARRAY_PAD_FRONT) {
204			throw new InvalidArgumentException('Invalid $padType value provided');
205			}
206
207			while (count($input) < $size) {
208			array_unshift($input, $padValue);
209			}
210
211			return $input;
212			}
213
214			/**
215			* Removes duplicate values from an array.
216			*
217			* @param array $input The array to be filtered.
218			* @param int $sortFlags Optional parameter used to modify the sorting behavior.
219			* @param bool $strict If set to TRUE the filter will throw exception if the $input array contains duplicates.
220			*
221			* @return array
222			*
223			* @throws FilterException Thrown if the array contains duplicates and $strict is true.
224			*/
225			public static function unique(
226			array $input,
227			int $sortFlags = self::ARRAY_UNIQUE_SORT_REGULAR,
228			bool $strict = false
229			) : array {
230			$unique = array_unique($input, $sortFlags);
231			if ($unique !== $input && $strict === true) {
232			$duplicateValues = self::findDuplicates($input);
233			throw new DuplicateValuesException($duplicateValues);
234			}
235
236			return $unique;
237			}
238
239			private static function findDuplicates(array $input) : array
240			{
241			$temp = [];
242			$duplicates = [];
243			foreach ($input as $key => $value) {
244			if (!in_array($value, $temp, true)) {
245			$temp[] = $value;
246			continue;
247			}
248
249			$duplicates[$key] = $value;
250			}
251
252			return $duplicates;
253			}
254			}
255

traderinteractive / filter-arrays-php

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Arrays::unique() A

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