Automattic\WooCommerce\Internal\Utilities
ArrayUtil::merge_by_key()
Merge two lists of associative arrays by a key.
Method of the class: ArrayUtil{}
No Hooks.
Return
Array
. The merged list sorted by the key values.
Usage
$result = ArrayUtil::merge_by_key( $arr1, $arr2, $key ): array;
- $arr1(array) (required)
- The first array.
- $arr2(array) (required)
- The second array.
- $key(string) (required)
- The key to merge by.
ArrayUtil::merge_by_key() ArrayUtil::merge by key code WC 9.6.1
public static function merge_by_key( array $arr1, array $arr2, string $key ): array { $merged = array(); // Overwrite items in $arr1 with items in $arr2 if they have the same key entry value. // The rest of items in $arr1 will be appended. foreach ( $arr1 as $item1 ) { $found = false; foreach ( $arr2 as $item2 ) { if ( $item1[ $key ] === $item2[ $key ] ) { $merged[] = array_merge( $item1, $item2 ); $found = true; break; } } if ( ! $found ) { $merged[] = $item1; } } // Append items from $arr2 that are don't have a corresponding key entry value in $arr1. foreach ( $arr2 as $item2 ) { $found = false; foreach ( $arr1 as $item1 ) { if ( $item1[ $key ] === $item2[ $key ] ) { $found = true; break; } } if ( ! $found ) { $merged[] = $item2; } } // Sort the merged list by the key values. usort( $merged, function ( $a, $b ) use ( $key ) { return $a[ $key ] <=> $b[ $key ]; } ); return array_values( $merged ); }