本文实例讲述了php遍历解析xml字符串的方法。分享给大家供大家参考，具体如下：
<?php$content = <<<XML<?xml version="1.0" encoding="UTF-8"?><test> <global_setting> <ping_protocol>HTTP</ping_protocol> <ping_port>80</ping_port> <ping_path>/index.html</ping_path> <response_timeout>5000</response_timeout> <health_check_interval>3000</health_check_interval> <unhealthy_threshold>2</unhealthy_threshold> <healthy_threshold>3</healthy_threshold> </global_setting> <instances> <instance ip="192.168.234.121"/> <instance ip="192.168.234.28"/> </instances></test>XML;$test = new SimpleXMLElement($content);//获得ping_protocol的值$ping_protocol = $test->global_setting->ping_protocol;echo "ping_protocol : $ping_protocol /n";//打印出所有instance的IPforeach ( $test->instances->instance as $instance) { echo "IP: {$instance['ip']} /n" ;}//这里经过测试,发现使用var_dump之类的似乎不能有效输出值,用echo比较顺利,//还有就是上面的那个xml的例子可以去掉<?xml version="1.0" encoding="UTF-8"?> //也可以去掉头尾///的<<<xml,然后当做普通字符串那样对待,但是没有测试中文等 
