pht\Vector::unshift

(PECL pht >= 0.0.1)

pht\Vector::unshift — Unshifts a value to the vector front

说明

public pht\Vector::unshift(mixed $value): void

This method unshifts a value to the front of a vector (in linear time). The vector will automatically be resized if it is not large enough.

参数

value: The value to be pushed onto the beginning of the vector. This value will be serialised (since it may be passed around between threads).

返回值

No return value.

范例

示例 #1 Unshifting a value to the front of a vector


<?php

use pht\Vector;

$vector = new Vector();

for ($i = 0; $i < 3; ++$i) {
    $vector->unshift($i); // causes a quadratic runtime, beware
}

var_dump($vector);

以上例程会输出：

object(pht\Vector)#1 (3) {
  [0]=>
  int(2)
  [1]=>
  int(1)
  [2]=>
  int(0)
}