/**
* @param int $offset
*/
public function offsetUnset($offset)
{
if (!$this->offsetExists($offset)) {
throw new \InvalidArgumentException('Offset does not exist');
}
$this->set->offsetUnset($offset);
}
/**
* Unset collection item.
*
* @param int $index
*/
public function offsetUnset($index)
{
$this->changed = true;
parent::offsetUnset($index);
}
public function offsetUnset($n)
{
echo "A::offsetUnset\n";
return parent::offsetUnset($n);
}
// 获得当前节点 $array->current(); // next() // 指针移动到下一个节点 $array->next(); // setSize(int $size) // 重新设置阵列数组的大小 $array->setSize(10); // getSize() // 获得阵列数组的大小 $array->getSize(); // offsetExists(int $index) // 判断该索引是否存在值，返回boolean $array->offsetExists(3); // offsetGet(int $index) // 获得该索引对应的值 $array->offsetGet(3); // offsetSet(int $index, mixed $value) // 设置该索引对应的值 $array->offsetSet(6, 'value3'); // offsetUnset(int $index) // 删除该索引对应的值 $array->offsetUnset(6); // toArray() // 将阵列转化成php数组 // output: Array ( [0] => [1] => 2 [2] => [3] => value2 [4] => [5] => [6] => [7] => [8] => [9] => ) $php_array = $array->toArray(); // fromArray($php_array) // 将php数组转化成阵列 // output: SplFixedArray Object ( [0] => [1] => 2 [2] => [3] => value2 [4] => [5] => [6] => [7] => [8] => [9] => ) $spl_array = SplFixedArray::fromArray($php_array);
<?php
$array = new SplFixedArray(5);
$a = $array->offsetUnset();
if (is_null($a)) {
echo 'PASS';
}
<?php
// Create a fixed array
$fixedArray = new SplFixedArray(5);
// Fill it up
for ($i = 0; $i < 5; $i++) {
$fixedArray[$i] = "PHPNW Testfest";
}
// remove an item
$fixedArray->offsetUnset("4");
var_dump($fixedArray);
