SimpleXMLElement::count

(PHP 5 >= 5.3.0, PHP 7)

SimpleXMLElement::countCounts the children of an element

说明

public SimpleXMLElement::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

User Contributed Notes

daniel dot erni at focusedpublishing dot com 22-Mar-2011 08:37
Alternative code for PHP < 5.3:
<?php
$count
= $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>