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wp_is_numeric_array › WordPress Function

Since4.4.0
Deprecatedn/a
› wp_is_numeric_array ( $data )
Parameters:
  • (mixed) $data Variable to check.
    Required: Yes
Returns:
  • (bool) Whether the variable is a list.
Defined at:
Codex:

Determines if the variable is a numeric-indexed array.

Note! This answers a different question than array_is_list and is more flexible to handle situations where some numeric array indices have been removed. A numeric-indexed array is only a “list” when the array keys form a contiguous range from zero to the highest key. Example: true === wp_is_numeric_array( array( 1, 2, 3, 4 ) ); false === wp_is_numeric_array( array( 'name' => 'WordPress' ) ); // All-numeric keys vs. list. $above_two = array_filter( array( 1, 2, 8, 9 ), fn ( $v ) => $v > 2 ); $above_two === array( '2' => 8, '3' => 9 ); true === wp_is_numeric_array( $above_two ); false === array_is_list( $above_two );


Related Functions: wp_kses_array_lc, wp_is_json_media_type, _set_cron_array, wp_insert_category, wp_is_unicode_email

Source 

function wp_is_numeric_array( $data ): bool {
	if ( ! is_array( $data ) ) {
		return false;
	}

	return array_all( $data, fn( $value, $key ) => ! is_string( $key ) );
}