NullsOption

Defines constants for the handling of null values in merge operations.

Tags

author

Marc Alcaraz (ekameleon)

author

Marc Alcaraz

since

1.0.8

since

1.0.8

example

use oihana\core\options\NullsOption;
use oihana\core\options\MergeOption;
use function oihana\core\arrays\merge;

$a = ['foo' => 'bar', 'count' => 2];
$b = ['foo' => null, 'extra' => null];

// Use 'keep' behavior for nulls
$result = merge($a, $b, MergeOption::normalize
([
    MergeOption::NULLS => NullsOption::KEEP
]));

// Result:
// [
//   'foo'   => 'bar',
//   'count' => 2,
//   'extra' => null
// ]

Table of Contents

Constants

KEEP  = 'keep'

Keep null values only if the key does not exist.

OVERWRITE  = 'overwrite'

Overwrite existing values with null.

SKIP  = 'skip'

Skip null values when merging (default behavior).

Methods

all()  : array<string|int, string>

Returns the list of valid options.

isValid()  : bool

Checks if a given value is a valid null behavior option.