(PECL ds >= 1.0.0)
Ds\Deque::insert — Inserts values at a given index
public Ds\Deque::insert ( int $index , mixed ...$values ) : void
Inserts values into the deque at a given index.
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.
No value is returned.
OutOfRangeException if the index is not valid.
Example #1 Ds\Deque::insert() example
<?php $deque = new \Ds\Deque(); $deque->insert(0, "e"); // [e] $deque->insert(1, "f"); // [e, f] $deque->insert(2, "g"); // [e, f, g] $deque->insert(0, "a", "b"); // [a, b, e, f, g] $deque->insert(2, ...["c", "d"]); // [a, b, c, d, e, f, g] var_dump($deque); ?>
The above example will output something similar to:
object(Ds\Deque)#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"
}
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https://www.php.net/manual/en/ds-deque.insert.php