The Queue class

(PECL ds >= 1.0.0)

Introduction

A Queue is a “first in, first out” or “FIFO” collection that only allows access to the value at the front of the queue and iterates in that order, destructively.

Class synopsis

classDs\QueueimplementsDs\Collection, ArrayAccess {

constintMIN_CAPACITY = 8;

publicallocate(int$capacity): void

publiccapacity(): int

publicclear(): void

publiccopy(): Ds\Queue

publicisEmpty(): bool

publicpeek(): mixed

publicpop(): mixed

publicpush(mixed...$values): void

publictoArray(): array

}

Predefined Constants

Ds\Queue::MIN_CAPACITY

Changelog

Version	Description
PECL ds 1.3.0	The class now implements ArrayAccess.

Ds\Queue::allocate — Allocates enough memory for a required capacity
Ds\Queue::capacity — Returns the current capacity
Ds\Queue::clear — Removes all values
Ds\Queue::__construct — Creates a new instance
Ds\Queue::copy — Returns a shallow copy of the queue
Ds\Queue::count — Returns the number of values in the queue
Ds\Queue::isEmpty — Returns whether the queue is empty
Ds\Queue::jsonSerialize — Returns a representation that can be converted to JSON
Ds\Queue::peek — Returns the value at the front of the queue
Ds\Queue::pop — Removes and returns the value at the front of the queue
Ds\Queue::push — Pushes values into the queue
Ds\Queue::toArray — Converts the queue to an array

The Queue class

Introduction

Class synopsis

Predefined Constants

Changelog

Table of Contents