php - 使用 PHP 进行 Xpath 日期比较

Question

我有xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="test1.xsl"?>
<products>
    <node>
        <node>
            <dist_value>
            <node> 55 </node>
            <node> 59 </node>
            <node> 72 </node>
            </dist_value>
            <reg_str_dt>
            <node> 2013-08-03 17:29:00 </node>
            </reg_str_dt>
            <product_id> 1 </product_id>
        </node>
    </node>
    <node>
        <node>
            <dist_value>
            <node> 72 </node>
            <node> 19 </node>
            <node> 49 </node>
            </dist_value>
            <reg_str_dt>
            <node> 2013-10-25 17:29:00 </node>
            </reg_str_dt>
            <product_id> 2 </product_id>
        </node>
    </node> 
    <node>
        <node>
            <dist_value>
            <node> 12 </node>
            <node> 548 </node>
            <node> 112 </node>
            </dist_value>
            <reg_str_dt>
            <node> 2013-08-12 17:29:00 </node>
            </reg_str_dt>
            <name> test </name>
            <product_id> 3 </product_id>
        </node>
    </node>
</products>

我写了这段 PHP 代码来比较日期

$my_date = '2013-09-01';
$xml = new DOMDocument();
$xml->load('product.xml');
$xpd = new DOMXPath($xml);
false&&$result_data = new DOMElement();
$result = $xpd->query("//node[reg_str_dt[(translate(node,'-','') > translate($my_date, '-', '') ]/*");
foreach($result as $result_data){
    echo $result_data->nodeName ." => ". $result_data->nodeValue ."<br/>";
}

但这段代码不起作用

在输出中它将返回产品 2 的数据

Answer 1

试试这个它的工作： -

<?php
$my_date = '2013-09-01';
$xml = new DOMDocument();
$xml->load('product.xml');
$xpd = new DOMXPath($xml);
false&&$result_data = new DOMElement();
$result = $xpd->query('//node[translate(translate(translate("2013-09-01 17:20:19", "-", "")," ",""),":","") > translate(translate(translate(node/reg_str_dt/node,"-","")," ",""),":","")]/*');
foreach($result as $result_data){
    echo $result_data->nodeName." => ". $result_data->nodeValue ."<br/>";;
}
?>