如何将数组从C#dll返回到php [英] How to return an array from a c# dll to php

问题描述

我有以下c#类库:

using System.Runtime.InteropServices;

namespace phptest
{
    public class Class1
    {
        public int getint()
        {
            return 17;
        }

        public string getstring()
        {
            return "yup";
        }

        public int doubleint(int x)
        {
            return x * 2;
        }

        public string doublestring(string s)
        {
            return s + s;
        }

        [return: MarshalAs(UnmanagedType.SafeArray)]
        public int[] getintarray()
        {
            return new int[] { 1, 7, 9 };
        }
    }
}

和以下php脚本对其进行测试:

and the following php script to test it:

$obj = new COM("phptest.Class1");
print $obj->getint();
print "\r\n" . $obj->getstring();
print "\r\n" . $obj->doublestring("dog") . "\r\n";
print $obj->doubleint(11);
$x = $obj->getintarray();
print_r($x);

除了 getintarray();

php脚本的最后一行输出: variant Object

The last line of the php script outputs: variant Object

var_dump($ x)带有空白.

如果我将c#更改为返回对象数组，则:

if I change the c# to return an array of objects instead:

[return: MarshalAs(UnmanagedType.SafeArray)]
public object[] getintarray()
{
    return new object[] { 1, 7, 9 };
}

然后 var_dump($ x)附带:

object(variant)#2 (0) {
}

如何获取c#dll传回的数组中的值?

How do I get at the values in the array passed back by the c# dll?

我需要对C#或php或两者同时做些什么吗?

Is there something I need to do to the c# or the php or both?

我还将需要字符串数组，因此对此的任何帮助也将非常受欢迎.

I'll also be needing string arrays, so any help on that would be most welcome too.

按照迈克尔的建议，我尝试了以下操作:

As suggested by Michael, I tried the following:

[return: MarshalAs(UnmanagedType.LPArray)]
public int[] getintarray()
...

它的返回值与我返回对象数组时的返回值相同.

It has the same returns as when I had it returning an object array.

还 count($ x)给出了返回数组中的元素数量(在这种情况下为3)

Also count($x) gives me the number of elements in the returned array (3 in this case)

我尝试通过以下方式访问元素:

I have tried accessing the elements in the following ways:

$x[0]          outputs "variant Object"
$x->value      outputs nothing
$x[0]->value   outputs nothing
$x->0          outputs nothing

var_dump($ x [0])和var_dump($ x)一样

var_dump($x[0]) gives me the same as var_dump($x)

推荐答案

不是最好的方法，但请查看您是否可以在PHP中获得任何帮助.

Not the best way to do it but see if you are able to get anything with this in Php.

foreach($x as $array){
    echo "Value ".$array. "<br/>";
}

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