ArrayObject::offsetUnset

(PHP 5, PHP 7, PHP 8)

ArrayObject::offsetUnsetUnsets the value at the specified index

说明

public ArrayObject::offsetUnset(mixed $key): void

Unsets the value at the specified index.

参数

key

The index being unset.

返回值

没有返回值。

示例

示例 #1 ArrayObject::offsetUnset() example

<?php
$arrayobj
= new ArrayObject(array(0=>'zero',2=>'two'));
$arrayobj->offsetUnset(2);
var_dump($arrayobj);
?>

以上示例会输出:

object(ArrayObject)#1 (1) {
  [0]=>
  string(4) "zero"
}

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