適用於 PHP < 5.3 的替代程式碼
<?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 — 計算元素的子元素數量
此函式沒有參數。
回傳元素的子元素數量。
範例 #1 計算子元素的數量
<?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 個小孩。\n", $person['name'], $person->count());
}
?>以上範例會輸出：
Person 1 has got 3 children. Person 2 has got 5 children.
適用於 PHP < 5.3 的替代程式碼
<?php
$count = $node->count(); // PHP > 5.3
$count = count($node->children()); // PHP < 5.3
?>