PHP For循环 - 循环后没有输出

Question

我有一个 foreach 循环，它工作正常 - 但由于某种原因，在它发生后任何超出循环的东西都不会输出。例如 echo $cpaTotal;不显示任何内容。

For 循环输出完美

我哪里出错了？

    $key = '84abf';
    $from = '2016/7/1';
    $to = '2016/9/17';
    $url = '/api/affreporting.asp?key='.$key.'&reportname=QuickSummaryReportDetailed&reportformat=xml&reportmerchantid=0&reportstartdate='.$from.'&reportenddate='.$to;
    $clean_xml = str_ireplace(['SOAP-ENV:', 'SOAP:'], '', file_get_contents($url));
    $xml = simplexml_load_string($clean_xml);
    $obj = json_decode(json_encode($xml));

    $cpaTotal = 'test';

    foreach($obj->Body->reportresponse->row as $row)
    {

        $CPACommission = $row->CPACommission;
        $merchant = $row->merchantname;
        $Product1NetRevenue = $row->Product1NetRevenue;

        echo "Merchant: ".$merchant. " | ";
        echo "CPA Commission: ".$CPACommission." | ";
        echo "Net Revenue: ".$Product1NetRevenue."</br>";
        echo "<hr>";

    }
    echo $cpaTotal;

输出 (html)

Merchant: <strong>mFortune</strong> | CPA Commission: <strong> &pound;2270</strong> | Downloads: <strong>34</strong> | Net Revenue: <strong>&pound;-161.4</strong><br>Merchant: <strong>PocketWin</strong> | CPA Commission: <strong> &pound;1330</strong> | Downloads: <strong>22</strong> | Net Revenue: <strong>&pound;-134.77</strong><br>Merchant: <strong>Mr Spin</strong> | CPA Commission: <strong> &pound;680</strong> | Downloads: <strong>31</strong> | Net Revenue: <strong>&pound;13.22</strong><br>

Answer 1

如果您有时间并愿意在代码中添加一些额外内容（仅用于调试目的），那么您可能想尝试以下代码。请注意，下面的代码与您的代码之间基本上没有太大区别，除了输出没有立即回显的事实。

这样做的唯一原因是您可以简单地将echo $output 行注释掉，以查看echo $cpaTotal 是否显示。如果它显示，那么这应该是一个提示，你的一些 HTML 标记来自你的数据（在 foreach 循环块内）被吞了。

<?php

    $key        = '84abf';
    $from       = '2016/7/1';
    $to         = '2016/9/17';
    $url        = '/api/affreporting.asp?key='.$key.'&reportname=QuickSummaryReportDetailed&reportformat=xml&reportmerchantid=0&reportstartdate='.$from.'&reportenddate='.$to;
    $clean_xml  = str_ireplace(['SOAP-ENV:', 'SOAP:'], '', file_get_contents($url));
    $xml        = simplexml_load_string($clean_xml);
    $obj        = json_decode(json_encode($xml));               
    $cpaTotal   = 'test';
    $output     = '';

    foreach($obj->Body->reportresponse->row as $row){                   
        $CPACommission      = $row->CPACommission;
        $merchant           = $row->merchantname;
        $Product1NetRevenue = $row->Product1NetRevenue;

        // INSTEAD OF INSTANT ECHO,
        // TRY DELAYED ECHO BY HOLDING YOUR OUTPUT
        // INSIDE A VARIABLE LIKE THIS:                 
        $output .= "Merchant: "         . $merchant             . " | ";
        $output .= "CPA Commission: "   . $CPACommission        . " | ";
        $output .= "Net Revenue: "      . $Product1NetRevenue   . "</br>";
        $output .= "<hr>";                  
    }

    // BE ALSO AWARE THAT YOUR DATA CONTAINS RAW HTML...
    // SOMETIMES, UNCLOSED HTML TAGS OR SEMANTICALLY INACCURATE TAGS
    // COULD CAUSE A "SWALLOW" EFFECT.... WHICH MEANS, YOUR DATA IS ACTUALLY RENDERED
    // BUT NOT VISIBLE IN THE BROWSER DUE TO THE AFOREMENTIONED ERRORS.
    echo $output;
    echo $cpaTotal;

Answer 2

</br> 不是有效的 HTML，请使用 <br> or <br /> 来兼容 HTML 和 XHMTL。

Answer 3

您应该在循环的最后一行使用<hr /> 而不是只使用<hr>。