SimpleXMLElement::count()

(PHP 5 >= 5.3.0, PHP 7)

Counts the children of an element

说明

publicSimpleXMLElement::count(void): int

This method counts the number of children of an element.

返回值

Returns the number of elements of an element.

范例

Example #1 Counting the number of children

<?php
$xml = <<<EOF
<people>
 <person name="Person 1">
  <child/>
  <child/>
  <child/>
 </person>
 <person name="Person 2">
  <child/>
  <child/>
  <child/>
  <child/>
  <child/>
 </person>
</people>
EOF;
$elem = new SimpleXMLElement($xml);
foreach ($elem as $person) {
    printf("%s has got %d children.\n", $person['name'], $person->count());
}
?>

以上例程会输出：

Person 1 has got 3 children.
Person 2 has got 5 children.

参见

• SimpleXMLElement::children() Finds children of given node

Alternative code for PHP < 5.3:
<?php
$count = $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>