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mufuphlex array-util

Array utils - smart&fast array helpers.

These helpers, among other things, provide a significantly improved (about 10-30 times faster) analogues of built-in PHP array functions, like unique() or intersect().

unique() function

This is an improved (30 times faster!) implementation of standard array_unique() PHP function.

intersect() function

This is an improved (10 times faster!) implementation of standard array_intersect() PHP function.

cutBy*() functions

If you need to remove particular elements from an array by elements' keys, cutByWhitelist(array $array, array $map) and cutByBlacklist(array $array, array $map) can be very useful. cutByWhitelist() leaves in $array only elements which are listed in the $map and cutByBlacklist() - just in opposite - removes from $array elements listed in $map. Moreover, these functions can not only remove, but also modify $array's members via callbacks - smth like an extended version of standard PHP function array_walk().

How to use it?

Let's consider the following sample array:

$array = [
    'result' => [
        'one' => [
            'param 1' => 1,
            'param 2' => 2,
            'param 3' => 3,
        ],
        'another' => [
            'param 1' => 4,
            'param 2' => 5,
            'param 3' => 6,
        ],
        'another one' => [
            'param 1' => 7,
            'param 2' => 8,
            'param 3' => 9,
        ]
    ],
    'errors' => [
        'form' => [
            'field 1' => [
                0 => 'error 1',
                1 => 'error 2'
            ],
            'field 2' => [
                0 => 'error 3',
                1 => 'error 4 '
            ]
        ],
        'logic' => [
            0 => 'logic error 1',
            1 => 'logic error 2'
        ]
    ],
    0 => [
        0 => 'item 1',
        1 => 'item 2'
    ],
    1 => [
        0 => 'item 3',
        1 => 'item 4'
    ],
    '123 - numeric containing' => [
        0 => 'item 5',
        1 => 'item 6'
    ],
    'not numeric containing' => [
        0 => 'item 5',
        1 => 'item 6'
    ],

];

1. Leave/remove elements in/from `array.result*` with keys containing only `one` or only `another`:

   $map = [
       'result' => [
           '/^(?:one|another)$/' => true
       ]
   ];
   

2. Leave/remove only elements in/from `array.errors.logic`:

   $map = [
       'errors' => [
           'logic' => true
       ]
   ];
   

3. Leave/remove only elements with key `0` from `array.errors.form.field *.*`:

   $map = [
       'errors' => [
           'form' => [
               'field \d+' => [
                   0 => true
               ]
           ]
       ]
   ];
   

4. Leave/remove elements in/from `array.result.*` with keys `param 3` and/or modify these elements' values by adding 5:

   $map = [
       'result' => [
           '/.+/' => [
               'param 3' => function($arg){ return $arg+=5; }
           ]
       ]
   ];