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 — 计算元素的子元素数量
此函数没有参数。
返回元素的子元素数量。
示例 #1 计算子元素的数量
<?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 has got %d children.\n", $person['name'], $person->count());
}
?>以上示例将输出
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
?>