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<Ds\Deque::isEmptyDs\Deque::jsonSerialize>
^Ds\DequeLast updated: Mon, 26 Oct 2026

Ds\Deque::join

(PECL ds >= 1.0.0)

Ds\Deque::join — Joins all values together as a string

Description

public function Ds\Deque::join(string $glue = ?): string

Joins all values together as a string using an optional separator between each value.

Parameters

glue

An optional string to separate each value.

Return Values

All values of the deque joined together as a string.

Examples

Example #1 Ds\Deque::join() example using a separator string

<?php
$deque = new \Ds\Deque(["a", "b", "c", 1, 2, 3]);

var_dump($deque->join("|"));
?>

The above example will output something similar to:

string(11) "a|b|c|1|2|3"

Example #2 Ds\Deque::join() example without a separator string

<?php
$deque = new \Ds\Deque(["a", "b", "c", 1, 2, 3]);

var_dump($deque->join());
?>

The above example will output something similar to:

string(11) "abc123"

<Ds\Deque::isEmptyDs\Deque::jsonSerialize>
^Ds\DequeLast updated: Mon, 26 Oct 2026