FilterIterator::accept

(PHP 5 >= 5.1.0, PHP 7)

FilterIterator::accept — 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, 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

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