_wp_array_get

函数



      _wp_array_get ( $array, $path, $default = null )

Access: Private

参数

(array)
$array
An array from which we want to retrieve some information.
Required: 是
(array)
$path
An array of keys describing the path with which to retrieve information.
Required: 是
(mixed)
$default
Optional. The return value if the path does not exist within the array, or if `$array` or `$path` are not arrays. Default null.
Required: 否

Default: null

返回值

(mixed) The value from the path specified.

定义位置

wp-includes/functions.php
, line 4911

引入: 5.6.0

弃用: –

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
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’ ) );

function _wp_array_get( $array, $path, $default = null ) {
	// Confirm $path is valid.
	if ( ! is_array( $path ) || 0 === count( $path ) ) {
		return $default;
	}

	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_element ];
	}

	return $array;
}

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