PHP < 5.3 的替代代码
<?php
$count = $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SimpleXMLElement::count — 统计元素的子元素数量
此函数没有参数。
返回元素的元素数量。
范例 #1 统计子元素的数量
<?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 有 %d 个孩子。\n", $person['name'], $person->count());
}
?>以上范例将输出
Person 1 has got 3 children. Person 2 has got 5 children.
PHP < 5.3 的替代代码
<?php
$count = $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>