FilterIterator::accept

(PHP 5 >= 5.1.0)

FilterIterator::accept — Check whether the current element of the iterator is acceptable

说明

public abstract bool FilterIterator::accept ( void )

Returns whether the current element of the iterator is acceptable through this filter.

参数

此函数没有参数。

返回值

TRUE if the current element is acceptable, otherwise FALSE .

范例

Example #1 FilterIterator::accept() example

  <?php
 // This iterator filters all values with less than 10 characters
 class  LengthFilterIterator  extends  FilterIterator  {

    public function  accept () {
         // Only accept strings with a length of 10 and greater
         return  strlen ( parent :: current ()) >  10 ;
    }

}

 $arrayIterator  = new  ArrayIterator (array( 'test1' ,  'more than 10 characters' ));
 $lengthFilter  = new  LengthFilterIterator ( $arrayIterator );

foreach ( $lengthFilter  as  $value ) {
    echo  $value  .  "\n" ;
}
 ?>

以上例程会输出：

more than 10 characters