SplFixedArray::fromArray

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplFixedArray::fromArrayImport a PHP array in a SplFixedArray instance

说明

public static SplFixedArray::fromArray(array $array, bool $preserveKeys = true): SplFixedArray

Import the PHP array array in a new SplFixedArray instance

参数

array

The array to import.

preserveKeys

Try to save the numeric indexes used in the original array.

返回值

Returns an instance of SplFixedArray containing the array content.

示例

示例 #1 SplFixedArray::fromArray() example

<?php
$fa
= SplFixedArray::fromArray(array(1 => 1, 0 => 2, 3 => 3));

var_dump($fa);

$fa = SplFixedArray::fromArray(array(1 => 1, 0 => 2, 3 => 3), false);

var_dump($fa);
?>

以上示例会输出:

object(SplFixedArray)#1 (4) {
  [0]=>
  int(2)
  [1]=>
  int(1)
  [2]=>
  NULL
  [3]=>
  int(3)
}
object(SplFixedArray)#2 (3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}