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General: Convert wp_array_get() to a "private" function and add tests.

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This function may be promoted in the future if it's deemed useful enough.

Props dd32, jorgefilipecosta, Hareesh Pillai

Fixes #51720


git-svn-id: https://develop.svn.wordpress.org/trunk@49580 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
John Blackbourn
2020-11-12 20:18:08 +00:00
parent e0f55936d9
commit 0ad0c55a28
6 changed files with 46 additions and 30 deletions
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40
src/wp-includes/functions.php
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@@ -4528,30 +4528,46 @@ function wp_array_slice_assoc( $array, $keys ) {
/**
* Accesses an array in depth based on a path of keys.
*
* It is the PHP equivalent of JavaScript's lodash.get, and mirroring it may help other components
* It is the PHP equivalent of JavaScript's `lodash.get()` and mirroring it may help other components
* retain some symmetry between client and server implementations.
*
* Example usage:
*
* $array = array(
* 'a' => array(
* 'b' => array(
* 'c' => 1,
* ),
* ),
* );
* _wp_array_get( $array, array( 'a', 'b', 'c' );
*
* @internal
*
* @since 5.6.0
* @access private
*
* @param array $array An array from which we want to retrieve some information.
* @param array $path An array of keys describing the path with which to retrieve information.
* @param array $default The return value if the path is not set on the array,
* or if the types of array and path are not arrays.
* @return array An array matching the path specified.
* @param mixed $default The return value if the path does not exist within the array,
* or if `$array` or `$path` are not arrays.
* @return mixed The value from the path specified.
*/
function wp_array_get( $array, $path, $default = array() ) {
// Confirm input values are expected type to avoid notice warnings.
if ( ! is_array( $array ) || ! is_array( $path ) ) {
function _wp_array_get( $array, $path, $default = null ) {
// Confirm $path is valid.
if ( ! is_array( $path ) || 0 === count( $path ) ) {
return $default;
}
$path_length = count( $path );
for ( $i = 0; $i < $path_length; ++$i ) {
if ( ! isset( $array[ $path[ $i ] ] ) ) {
foreach ( $path as $path_element ) {
if (
! is_array( $array ) ||
( ! is_string( $path_element ) && ! is_integer( $path_element ) && ! is_null( $path_element ) ) ||
! array_key_exists( $path_element, $array )
) {
return $default;
}
$array = $array[ $path[ $i ] ];
$array = $array[ $path_element ];
}
return $array;