FilterIterator::accept()
(PHP 5>=5.1.0,PHP 7)
Check whether the current element of the iterator is acceptable
说明
public abstract FilterIterator::accept(void) : bool
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,otherwiseFALSE
.
范例
Example#1FilterIterator::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