PHP Manual
Sequence
Inserts values at a given index

Ds\Sequence::insert

(PECL ds >= 1.0.0)

Ds\Sequence::insert — Inserts values at a given index

说明

abstract public Ds\Sequence::insert ( int $index [, mixed $...values ] ) : void

Inserts values into the sequence at a given index.

参数

index: The index at which to insert. 0 <= index <= count

Note:

You can insert at the index equal to the number of values.
values: The value or values to insert.

返回值

没有返回值。

错误／异常

OutOfRangeException if the index is not valid.

范例

Example #1 Ds\Sequence::insert() example

 <?php
$sequence = new \Ds\Vector();

$sequence->insert(0, "e");             // [e]
$sequence->insert(1, "f");             // [e, f]
$sequence->insert(2, "g");             // [e, f, g]
$sequence->insert(0, "a", "b");        // [a, b, e, f, g]
$sequence->insert(2, ...["c", "d"]);   // [a, b, c, d, e, f, g]

var_dump($sequence);
?>

以上例程的输出类似于：

object(Ds\Vector)#1 (7) {
  [0]=>
  string(1) "a"
  [1]=>
  string(1) "b"
  [2]=>
  string(1) "c"
  [3]=>
  string(1) "d"
  [4]=>
  string(1) "e"
  [5]=>
  string(1) "f"
  [6]=>
  string(1) "g"
}