SplFixedArray::setSize

(PHP 5 >= 5.3.0)

SplFixedArray::setSize — Change the size of an array

说明

public int SplFixedArray::setSize ( int $size )

Change the size of an array to the new size of size. If size is less than the current array size, any values after the new size will be discarded. If size is greater than the current array size, the array will be padded with NULL values.

参数

size: The new array size. This should be a value between 0 and PHP_INT_MAX .

返回值

没有返回值。

错误／异常

Throws InvalidArgumentException when size is less than zero.

Raises E_WARNING when size cannot be used as a number.

范例

Example #1 SplFixedArray::setSize() example

  <?php
   $array  = new  SplFixedArray ( 5 );
   echo  $array -> getSize (). "\n" ;
    $array -> setSize ( 10 );
   echo  $array -> getSize (). "\n" ;
 ?>

以上例程会输出：

5
10