Arrays.md

\GeekLab\ToolBox\Arrays

Basic usage:

explore(array &$array, callable $callback): void

Description:

Recursive version of array_walk and is different from array_walk_recursive, since array_walk_recursive will only visit leaf nodes. \GeekLab\ToolBox\Arrays::explore will hit visit all nodes.

Usage:

See tests/unit/Arrays_exploreTest.php for using GeekLab\ToolBox\Arrays::renameKey() recursively.

renameKey(array $array, $oldKey, $newKey, bool $recursive = FALSE):

Description:

Will return an array with a renamed a key with the order preserved.

Usage:

$array = [
    'xyz' => 1,
    'def' => 2
];
 
\GeekLab\ToolBox\Arrays::renameKey($array, 'def', 'DefLeppard');

firstKey(array $array)

Description:

Returns the first key of an array.

Usage:

$array = [
        'xyz' => 1,
        'def' => 2
    ];

$fk = \GeekLab\ToolBox\Arrays::firstKey($array);

lastKey(array $array)

Description:

Returns the last key of an array.

Usage:

$array = [
            'xyz' => 1,
            'def' => 2
        ];
 
$lk = \GeekLab\ToolBox\Arrays::lastKey($array);

firstValue(array $array)

Description:

Returns the first value of an array.

Usage:

$array = [
        'xyz' => 1,
        'def' => 2
    ];

$fv = \GeekLab\ToolBox\Arrays::firstValue($array);

lastValue(array $array)

Description: Returns the last value of an array.

Usage:

$array = [
        'xyz' => 1,
        'def' => 2
    ];

$fv = \GeekLab\ToolBox\Arrays::lastValue($array);