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SimpleXMLElement::count

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SimpleXMLElement::countCounts the children of an element

说明

public SimpleXMLElement::count(): int

This method counts the number of children of an element.

参数

此函数没有参数。

返回值

Returns the number of elements of an element.

示例

示例 #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());
}
?>

以上示例会输出:

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

参见

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User Contributed Notes 1 note

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-2
daniel dot erni at focusedpublishing dot com
13 years ago
Alternative code for PHP < 5.3:
<?php
$count
= $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>
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