PHP 手册
后退 |  | 前进

# DomElement->has_attribute()

(no version information, might be only in CVS)

DomElement->has_attribute() -- Checks to see if an attribute exists in the current node

## 说明

class DomElement {
bool has_attribute ( string name )
}

This functions checks to see if an attribute named name exists in the current node.

## 参数

name

  The name of the tested attribute.

## 返回值

Returns `TRUE` if the asked attribute exists, `FALSE` otherwise.

## 范例

例子 1. Testing the existence of an attribute

`<?php include("example.inc"); if (!$dom = domxml_open_mem($xmlstr)) { echo "Error while parsing the document\n"; exit; } $root = $dom->document_element(); $buffer = '<html'; if ($root->has_attribute('language')) { $buffer .= 'lang="' . $root->get_attribute('language') . '"'; } $buffer .= '>'; ?>`

## Migrating to PHP 5

Use DOMElement->hasAttribute().

后退 | 起点 | 前进
DomElement->get_elements_by_tagname() | 上一级 | DomElement->remove_attribute()