rexlabs/utility-belt

A set of helpful utilities for working with data, collections (arrays of arrays) and arrays in php

4.0.0 2023-07-19 13:53 UTC

This package is auto-updated.

Last update: 2024-10-19 16:28:56 UTC


README

This library isn't in active development. Various other collection libraries provide most functionality that we need out of the box.

Bug fixes only.

UtilityBelt

Software License Build Status Coverage Status

Every time we start a new php project that requires even a small amount of data wrangling, we find ourselves re-writing the same helper functions over and over again.

This package provides some key functions that make it easier to perform common tasks like:

  • finding and filtering values in collections of arrays
  • grouping values in collections by properties
  • extracting values from deeply nested associative arrays
  • recursive array mapping
  • determining if an array is associative
  • and more...

These functions are all provided without pulling in any heavy framework dependencies or third party packages.

Installation

Install the latest version with:

$ composer require rexlabs/utility-belt

CollectionUtility

filterWhere / filterWhereNot

(array $items, array $properties)

Some extremely common functionality involves filtering collections (arrays of rows) based on a property list. The code required for this via array_filter tends to become fairly bloated and makes the purpose of the underlying code harder to understand. These functions provide a simpler way to perform these kinds of filters.

All comparisons below can be run as case insensitive or strict checks.

$items = [
    [
        "name"=>"john",
        "age"=>18
    ],
    [
        "name"=>"mary",
        "age"=>19
    ],
    [
        "name"=>"william",
        "age"=>18,
        "dog"=>[
            "name"=>"betty"
        ]
    ]
];

CollectionUtility::filterWhere($items,["age"=>18])
// [["name"=>"john",...], ["name"=>"william",...]];

CollectionUtility::filterWhereNot($items,["age"=>18])
// [["name"=>"mary",...]]

CollectionUtility::filterWhere($items,["dog.name"=>"betty"])
// [["name"=>"william",...]]

CollectionUtility::filterWhere($items,[["dog.name"=>"betty"],["name"=>"john"]]);
// [["name"=>"william",...], ["name"=>"john"]]

findWhere / findWhereNot

(array $items, array $properties)

Similar to the filter methods but returns the first matching result and optionally the key where it was found.

groupByProperty / keyByProperty

(array $array, $key)

Re-organises rows in a collection under the values of one or more properties.

The difference between the two methods is that key by property allows for only a single row per property in the result while grouping will return an array of collections.

$items = [
    ["name"=>"john","dog"=>["name"=>"william"]],
    ["name"=>"frank","dog"=>["name"=>"william"]],
    ["name"=>"dodd","dog"=>["name"=>"bruce"]],
];

CollectionUtility::keyByProperty($items,"dog.name")
[
   "william"=>["name"=>"frank","dog"=>["name"=>"william"]],
   "bruce"=>["name"=>"dodd","dog"=>["name"=>"bruce"]],
]

CollectionUtility::keyByProperty($items,["name","dog.name"])
[
    "john.william"=>["name"=>"john","dog"=>["name"=>"william"]],
    "frank.william"=>["name"=>"frank","dog"=>["name"=>"william"]],
    "dodd.bruce"=>["name"=>"dodd","dog"=>["name"=>"bruce"]],
]

CollectionUtility::groupByProperty($items,"dog.name")
[
    "william"=>[
        ["name"=>"john","dog"=>["name"=>"william"]],
        ["name"=>"frank","dog"=>["name"=>"william"]],
    ],
    "bruce"=>[
        ["name"=>"dodd","dog"=>["name"=>"bruce"]],
    ]
]

sort / asort

(array $array, $property, $sort_direction = self::SORT_DIRECTION_ASCENDING, $sort_flags=SORT_REGULAR)

Sort a collection using a property or nested property

$items = [
    ["string"=>"a", "nested"=>["number"=>1]],
    ["string"=>"d", "nested"=>["number"=>3]],
    ["string"=>"c", "nested"=>["number"=>3]],
    ["string"=>"b", "nested"=>["number"=>2]],
];

CollectionUtility::sort($items, "nested.number", CollectionUtility::SORT_DIRECTION_DESCENDING, SORT_NUMERIC);
[
    ["string"=>"c", "nested"=>["number"=>3]],
    ["string"=>"d", "nested"=>["number"=>3]],
    ["string"=>"b", "nested"=>["number"=>2]],
    ["string"=>"a", "nested"=>["number"=>1]]
]

keepKeys

(array $array, array $keys, $removal_action = CollectionUtility::REMOVAL_ACTION_DELETE)

Remove (or nullify) all keys in each collection item except for those specified in the keys arg

$items = [
    ["animal"=>"dog","name"=>"John","weather"=>"mild"],
    ["animal"=>"cat","name"=>"William"]
];

CollectionUtility::keepKeys($items, ["animal","weather"], CollectionUtility::REMOVAL_ACTION_DELETE);
[
    ["animal"=>"dog", "weather"=>"mild"],
    ["animal"=>"cat"]
]

CollectionUtility::keepKeys($items, ["animal","weather"], CollectionUtility::REMOVAL_ACTION_NULLIFY);
[
    ["animal"=>"dog", "name"=>null, ""weather"=>"mild"],
    ["animal"=>"cat", "name"=>null]
]

removeKeys

(array $array, array $keys, $removal_action = CollectionUtility::REMOVAL_ACTION_DELETE)

Remove (or nullify) any keys provided in the $keys argument in each collection item.

$items = [
    ["animal"=>"dog","name"=>"John","weather"=>"mild"],
    ["animal"=>"cat","name"=>"William"]
];

CollectionUtility::removeKeys($items, ["animal","weather"], CollectionUtility::REMOVAL_ACTION_DELETE);
[
    ["name"=>"John"],
    ["name"=>"William"]
]

random

(array $array)

Get a random item from an array

shuffle

(array $array)

Shuffle an array and return the result

ArrayUtility

dotRead

(array $array, $property, $default_value=null)

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"with a prize at the bottom"
            ]
        ]
    ]
]

ArrayUtility::dotRead($array, "a.very.shallow.hole", "no prize!")
"no prize!"

ArrayUtility::dotRead($array, "a.very.deep.hole")
"with a prize at the bottom"

dotWrite

(array $array, $property, $value)

Original array:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"with a prize at the bottom"
            ]
        ]
    ],
    "i"=>[
        "like"=>"candy"
    ]
]

Return a new array containing the updated property:

$array = ArrayUtility::dotWrite($array, "a.very.deep.hole", "no prize!");
$array - ArrayUtility::dotWrite($array, "i.like", ["carrots","broccoli"]);

Array is now:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"no prize!"
            ]
        ]
    ],
    "i"=>[
        "like"=>["carrots","broccoli"]
    ]
]

Set new properties:

$array = ArrayUtility::dotWrite($array, "a.very.shallow.hole", "that may contain a prize!");
$array = ArrayUtility::dotWrite($array, "i.also.like", "blue skies");

Array is now:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"no prize!"
            ]
        ]
    ],
    "a"=>[
        "very"=>[
            "shallow"=>[
                "hole"=>"that may contain a prize!"
            ]
        ]
    ],
    "i"=>[
        "like"=>["carrots","broccoli"]
        "also"=>[
            "like"=>"blue skies"
        ]
    ]
]

dotMutate

(array $array, $property, $value)

This method is similar to dotWrite() except the array is passed by reference so that property changes directly mutate the given array.

Original array:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"with a prize at the bottom"
            ]
        ]
    ],
    "i"=>[
        "like"=>"candy"
    ]
]

Mutate the array with the updated property:

ArrayUtility::dotMutate($array, "a.very.deep.hole", "no prize!");
ArrayUtility::dotMutate($array, "i.like", ["carrots","broccoli"]);

Array is now:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"no prize!"
            ]
        ]
    ],
    "i"=>[
        "like"=>["carrots","broccoli"]
    ]
]

Set new properties:

ArrayUtility::dotMutate($array, "a.very.shallow.hole", "that may contain a prize!");
ArrayUtility::dotMutate($array, "i.also.like", "blue skies");

Array is now:

$array = [
    "a"=>[
        "very"=>[
            "deep"=>[
                "hole"=>"no prize!"
            ]
        ]
    ],
    "a"=>[
        "very"=>[
            "shallow"=>[
                "hole"=>"that may contain a prize!"
            ]
        ]
    ],
    "i"=>[
        "like"=>["carrots","broccoli"]
        "also"=>[
            "like"=>"blue skies"
        ]
    ]
]

flatten / inflate

(array $array)

$items = [
    "a"=>[
        "name"=>"jimmy",
        "fruits"=>["apple","banana"]
    ],
    "b"=>[
        "name"=>"william",
        "age"=>18,
        "dog"=>[
            "name"=>"betty"
        ]
    ]
]

ArrayUtility::flatten($items);
[
    "a.name"=>"jimmy",
    "a.fruits"=>["apple","banana"], //by default these are not flattened
    "b.name"=>"william",
    "b.age"=>18,
    "b.dog.name"=>"betty"
]

ArrayUtility::inflate($flattenedArray);
[
    "a"=>[
        "name"=>"jimmy",
        "fruits"=>["apple","banana"]
    ],
    "b"=>[
        "name"=>"william",
        "age"=>18,
        "dog"=>[
            "name"=>"betty"
        ]
    ]
]

isAssoc

(array $array)

Quick test to determine whether an array is associative or not.

ArrayUtility::isAssoc(["a"=>1,"b"=>2])
true

ArrayUtility::isAssoc(["a","b"])
false

keepKeys

(array $array, array $keys, ArrayUtility::REMOVAL_ACTION_DELETE)

Same as CollectionUtility::keepKeys but operates on a basic array instead of a collection of arrays.

removeKeys

(array $array, array $keys, ArrayUtility::REMOVAL_ACTION_DELETE)

Same as CollectionUtility::removeKeys but operates on a basic array instead of a collection of arrays.

mapRecursive

(array $array, callable $callback, $map_arrays = false)

Like array walk recursive but doesn't mutate the array. Also, callback receives three arguments: $value, $key, $array

map

(array $array, callable $callback)

Like array_map but the callback receives three arguments: $value, $key, $array

first

(array $array)

Returns the first element from an array. More useful than reset() because it can handle the result of a function.

last

(array $array)

Returns the last element from an array. More useful than end() because it can handle the result of a function.

firstKey

(array $array)

Returns the key of the first element in an array.

lastKey

(array $array)

Returns the key of the last element in an array.

Install

Install UtilityBelt using Composer.

$ composer require rexlabs/utility-belt

Testing

UtilityBelt has a PHPUnit test suite. To run the tests, run the following command from the project folder.

$ composer test

Credits

License

The MIT License (MIT). Please see LICENSE for more information.