Data Structures
PHP Manual

The Queue class

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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

Ds\Queue implements Ds\Collection {
/* Constants */
const int MIN_CAPACITY = 8 ;
/* Methods */
public void allocate ( int $capacity )
public int capacity ( void )
public void clear ( void )
public Ds\Queue copy ( void )
public bool isEmpty ( void )
public mixed peek ( void )
public mixed pop ( void )
public void push ([ mixed $...values ] )
public array toArray ( void )
}

Predefined Constants

Ds\Queue::MIN_CAPACITY

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Data Structures
PHP Manual