Javascript 在CLI和node.js脚本中运行时，执行PHP脚本的结果不同

我完全搞不明白为什么我的PHP脚本在通过CLI运行时（产生正确的结果）与在Node.js中通过exec函数运行时产生不同的结果

这是我的PHP。注意

fopen（'blah.txt'，'w'）

行，这是我用来检查脚本是否到达该位置的

calculator.php

class calculator{

    public static $_var = array();

    public function calculate($xml, $xsl, $frequency){
        $reader = new DOMDocument;
        if(!$reader->load($xsl)) throw new Exception('XSL Could not be loaded: ' . $xsl);

        $processor = new XSLTProcessor;
        $processor->importStyleSheet($reader);
        $processor->registerPHPFunctions();
        $processor->setParameter('', 'frequency', $frequency);

        $dictionary = new DOMDocument;
        if(!$dictionary->load($xml)) throw new Exception('XML Could not be loaded: ' . $xml);

        $processor->transformToXML($dictionary);
    }

    public static function connectNodes($name, $dataset, $processor, $destination, $frequency){
        $var = self::$_var;
        self::$_var = array();

        $test = fopen('blah.txt', 'w');
        fclose($test);

        ob_start();
        require 'templates/' . $processor . '.php';
        $xsltSheet = new DOMDocument;
        $xsltSheet->loadXML(ob_get_clean());

        $xsltProc = new XSLTProcessor;
        $xsltProc->importStyleSheet($xsltSheet);

        $dataSet = new DOMDocument;
        if(is_file('../dataFiles/xml/' . $dataset . '.xml') && calculator::makedirs('../dataFiles/json/' . $destination . '/' . $frequency)){
            //proceed only if the dataset exists and the folders are created correctly
            $dataSet->load('../dataFiles/xml/' . $dataset . '.xml');
            if(!is_file('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json')){
                $filemaker = fopen('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json', 'w');
                fclose($filemaker);
            }
            $xsltProc->transformToURI($dataSet, '../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json');
        } else {
            throw new Exception('Either dataset does not exist('. $dataset .'), or directories could not be created (dataFiles/json/'. $destination . '/' . $frequency .')');
        }

    }

    public static function populateVarWithXPath($var){
        self::$_var[] = $var;
    }

    public static function makedirs($dirpath, $mode=0777) {
        return is_dir($dirpath) || mkdir($dirpath, $mode, true);
    }

}

当我通过CLI运行此脚本时，会在运行脚本的目录中创建blah.txt。但是当我通过Node.js运行它时，它不会创建blah.txt

以下是我的节点脚本：

脚本运行程序

class calculator{

    public static $_var = array();

    public function calculate($xml, $xsl, $frequency){
        $reader = new DOMDocument;
        if(!$reader->load($xsl)) throw new Exception('XSL Could not be loaded: ' . $xsl);

        $processor = new XSLTProcessor;
        $processor->importStyleSheet($reader);
        $processor->registerPHPFunctions();
        $processor->setParameter('', 'frequency', $frequency);

        $dictionary = new DOMDocument;
        if(!$dictionary->load($xml)) throw new Exception('XML Could not be loaded: ' . $xml);

        $processor->transformToXML($dictionary);
    }

    public static function connectNodes($name, $dataset, $processor, $destination, $frequency){
        $var = self::$_var;
        self::$_var = array();

        $test = fopen('blah.txt', 'w');
        fclose($test);

        ob_start();
        require 'templates/' . $processor . '.php';
        $xsltSheet = new DOMDocument;
        $xsltSheet->loadXML(ob_get_clean());

        $xsltProc = new XSLTProcessor;
        $xsltProc->importStyleSheet($xsltSheet);

        $dataSet = new DOMDocument;
        if(is_file('../dataFiles/xml/' . $dataset . '.xml') && calculator::makedirs('../dataFiles/json/' . $destination . '/' . $frequency)){
            //proceed only if the dataset exists and the folders are created correctly
            $dataSet->load('../dataFiles/xml/' . $dataset . '.xml');
            if(!is_file('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json')){
                $filemaker = fopen('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json', 'w');
                fclose($filemaker);
            }
            $xsltProc->transformToURI($dataSet, '../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json');
        } else {
            throw new Exception('Either dataset does not exist('. $dataset .'), or directories could not be created (dataFiles/json/'. $destination . '/' . $frequency .')');
        }

    }

    public static function populateVarWithXPath($var){
        self::$_var[] = $var;
    }

    public static function makedirs($dirpath, $mode=0777) {
        return is_dir($dirpath) || mkdir($dirpath, $mode, true);
    }

}

var ipc = require('./ipc');
var exec = require('child_process').exec;

ipc.listen(function(frequency){

    if(frequency.toString().match(/integrator /)){
        var freq = frequency.toString().replace(/integrator /, '');
        console.log('Received message: ' + freq);

        var cmd = exec('php use_calculator.php metricsDictionary.xml metricsXmlReader.xsl ' + frequency);

        cmd.on('close', function(exitCode, stdout, stderr){
            if(exitCode === 0){
                console.log('exitcode: ' + exitCode + ' ; stdout: ' + stdout + ' ; stderr: ' + stderr);

            } else {
                console.log('Try again?');
            }
        });

        cmd.on('error', function(err){
            throw err;
        });

    }

});

有趣的是，如果我将blah.txt移到calculate（）函数（首先运行），CLI和node都将创建该文件

---

多一点背景：

class calculator{

    public static $_var = array();

    public function calculate($xml, $xsl, $frequency){
        $reader = new DOMDocument;
        if(!$reader->load($xsl)) throw new Exception('XSL Could not be loaded: ' . $xsl);

        $processor = new XSLTProcessor;
        $processor->importStyleSheet($reader);
        $processor->registerPHPFunctions();
        $processor->setParameter('', 'frequency', $frequency);

        $dictionary = new DOMDocument;
        if(!$dictionary->load($xml)) throw new Exception('XML Could not be loaded: ' . $xml);

        $processor->transformToXML($dictionary);
    }

    public static function connectNodes($name, $dataset, $processor, $destination, $frequency){
        $var = self::$_var;
        self::$_var = array();

        $test = fopen('blah.txt', 'w');
        fclose($test);

        ob_start();
        require 'templates/' . $processor . '.php';
        $xsltSheet = new DOMDocument;
        $xsltSheet->loadXML(ob_get_clean());

        $xsltProc = new XSLTProcessor;
        $xsltProc->importStyleSheet($xsltSheet);

        $dataSet = new DOMDocument;
        if(is_file('../dataFiles/xml/' . $dataset . '.xml') && calculator::makedirs('../dataFiles/json/' . $destination . '/' . $frequency)){
            //proceed only if the dataset exists and the folders are created correctly
            $dataSet->load('../dataFiles/xml/' . $dataset . '.xml');
            if(!is_file('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json')){
                $filemaker = fopen('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json', 'w');
                fclose($filemaker);
            }
            $xsltProc->transformToURI($dataSet, '../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json');
        } else {
            throw new Exception('Either dataset does not exist('. $dataset .'), or directories could not be created (dataFiles/json/'. $destination . '/' . $frequency .')');
        }

    }

    public static function populateVarWithXPath($var){
        self::$_var[] = $var;
    }

    public static function makedirs($dirpath, $mode=0777) {
        return is_dir($dirpath) || mkdir($dirpath, $mode, true);
    }

}

use_calculator.php文件将调用calculate（）函数并将三个必需的参数传递给它。然后，在calculate（）中，它将执行XML和XSL文件合并

XSL中有关于如何处理XML数据的规则，它所做的是调用connectNodes（）函数，该函数将处理新的XML和XSL。这就像是XML/XSL的开端

关键是有一个XML文件列出了处理其他XML数据的内容和方式的所有细节。该文件在calculate（）中读取。然后，在计算每段数据时，它以类似于初始阶段的方式调用connectNode（）函数

为了让事情更清楚（我希望如此），下面是metricsXmlReader.xsl，它调用connectNodes（）

metricsXmlReader.xsl

class calculator{

    public static $_var = array();

    public function calculate($xml, $xsl, $frequency){
        $reader = new DOMDocument;
        if(!$reader->load($xsl)) throw new Exception('XSL Could not be loaded: ' . $xsl);

        $processor = new XSLTProcessor;
        $processor->importStyleSheet($reader);
        $processor->registerPHPFunctions();
        $processor->setParameter('', 'frequency', $frequency);

        $dictionary = new DOMDocument;
        if(!$dictionary->load($xml)) throw new Exception('XML Could not be loaded: ' . $xml);

        $processor->transformToXML($dictionary);
    }

    public static function connectNodes($name, $dataset, $processor, $destination, $frequency){
        $var = self::$_var;
        self::$_var = array();

        $test = fopen('blah.txt', 'w');
        fclose($test);

        ob_start();
        require 'templates/' . $processor . '.php';
        $xsltSheet = new DOMDocument;
        $xsltSheet->loadXML(ob_get_clean());

        $xsltProc = new XSLTProcessor;
        $xsltProc->importStyleSheet($xsltSheet);

        $dataSet = new DOMDocument;
        if(is_file('../dataFiles/xml/' . $dataset . '.xml') && calculator::makedirs('../dataFiles/json/' . $destination . '/' . $frequency)){
            //proceed only if the dataset exists and the folders are created correctly
            $dataSet->load('../dataFiles/xml/' . $dataset . '.xml');
            if(!is_file('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json')){
                $filemaker = fopen('../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json', 'w');
                fclose($filemaker);
            }
            $xsltProc->transformToURI($dataSet, '../dataFiles/json/' . $destination . '/' . $frequency . '/' . $name . '.json');
        } else {
            throw new Exception('Either dataset does not exist('. $dataset .'), or directories could not be created (dataFiles/json/'. $destination . '/' . $frequency .')');
        }

    }

    public static function populateVarWithXPath($var){
        self::$_var[] = $var;
    }

    public static function makedirs($dirpath, $mode=0777) {
        return is_dir($dirpath) || mkdir($dirpath, $mode, true);
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:php="http://php.net/xsl">

    <xsl:output method="html" omit-xml-declaration="yes" />

    <xsl:template match="metrics">
        <xsl:for-each select="metric">
            <xsl:if test="frequency = $frequency">
                <xsl:for-each select="xpath/var">
                    <xsl:variable name="pusher" select="php:functionString('calculator::populateVarWithXPath', .)" />
                </xsl:for-each>
                <xsl:variable name="trigger" select="php:functionString('calculator::connectNodes', name, dataset, processor, destination, frequency)" />   
            </xsl:if>
        </xsl:for-each>
    </xsl:template>

</xsl:stylesheet>

---

我的第一个猜测是，无论PHP试图将文件写入何处，它都不能。您可以尝试为每个人提供权限的绝对路径，如/tmp

此外，您还应该确保能够处理并行请求。因为这是不可伸缩的。如前所述，管道是一种解决方案

惠普

---

PS：您试过了吗？

假设node是作为CLI的不同用户运行的，他们是否具有相同的权限？请尝试生成一个shell，并将php命令作为stdin进行管道传输，通过在dataHi cswl上侦听来检查发生了什么，这听起来不错。你建议我怎么做？您的意思是使用spawn（）而不是exec（）？关于我的帐户权限的说明。我不是以root用户身份登录（事实上，该帐户的权限较低）。然后我使用这个命令来运行一切：/usr/bin/sudo su-apache-c''，apache拥有root权限。我担心它无法扩展，因为生成新进程的成本很高。但是，这是一个CPU密集型计算，所以Node不应该将工作传递给另一个进程吗？我的意思是，它不会扩展，因为您只能打开blah.txt一次进行写入（至少在没有机制为每个要写入的进程提供始终新的文件夹的情况下）。我真的会从地面开始挖掘，看看你是否能在一个你能写的地方写一个文件，然后确定你的文件应该打开的地方。