对未定义函数的Php调用

Question

我正在使用php创建一个php扩展。

main.cpp

#include <phpcpp.h>
#include <iostream>

using namespace std;

void helloWorld(Php::Parameters &params)
{
  string name = params[0];
  cout << "Hello" << name << endl;
}

extern "C" {

    /**
     *  Function that is called by PHP right after the PHP process
     *  has started, and that returns an address of an internal PHP
     *  strucure with all the details and features of your extension
     *
     *  @return void*   a pointer to an address that is understood by PHP
     */
    PHPCPP_EXPORT void *get_module()
    {
        static Php::Extension extension("yourextension", "1.0");
        extension.add("helloWorld", helloWorld);
        return extension;
    }
}

然后我运行$ make && sudo make install输出

make: Nothing to be done for 'all'.
cp -f yourextension.so /usr/lib/php/20151012
cp -f yourextension.ini /etc/php/7.0/cli/conf.d 

检查php配置

myname@ubuntu:~/EmptyExtension$ php -i | grep -i yourextension
/etc/php/7.0/cli/conf.d/yourextension.ini
yourextension

对我来说很好，所以我试着用helloWorld()

test.php

<?php

echo extension_loaded('yourextension'); // outputs 1 
echo helloWorld('it works');

但不起作用;)

ErrorMessage Uncaught Error: Call to undefined function helloWorld()

有什么想法吗？我使用的是ubuntu 16.04和php7.0.8

非常感谢

编辑当编译php时，我得到了下面的输出，也许已经有什么问题了？

myname@ubuntu:~/PHP-CPP$ sudo make install
mkdir -p /usr/include/phpcpp
mkdir -p /usr/lib
cp -f phpcpp.h /usr/include
cp -f include/*.h /usr/include/phpcpp
if [ -e libphpcpp.so.2.0.0 ]; then \
    cp -f libphpcpp.so.2.0.0 /usr/lib/; \
    ln -f -s /usr/lib/libphpcpp.so.2.0.0 /usr/lib/libphpcpp.so.2.0; \
    ln -f -s /usr/lib/libphpcpp.so.2.0.0 /usr/lib/libphpcpp.so; \
fi
if [ -e libphpcpp.a.2.0.0 ]; then cp -f libphpcpp.a.2.0.0 /usr/lib/; \
    ln -f -s /usr/lib/libphpcpp.a.2.0.0 /usr/lib/libphpcpp.a; \
fi
if `which ldconfig`; then \
    sudo ldconfig; \
fi

EDIT2函数看起来甚至不被导出

myname@ubuntu:~/EmptyExtension$ sudo nm -D /usr/lib/php/20151012/yourextension.so 
0000000000201060 B __bss_start
                 U __cxa_atexit
                 w __cxa_finalize
                 U __cxa_guard_abort
                 U __cxa_guard_acquire
                 U __cxa_guard_release
0000000000201060 D _edata
0000000000201130 B _end
0000000000000a6c T _fini
00000000000009c0 T get_module
                 w __gmon_start__
                 U __gxx_personality_v0
0000000000000810 T _init
                 w _ITM_deregisterTMCloneTable
                 w _ITM_registerTMCloneTable
                 w _Jv_RegisterClasses
                 U _Unwind_Resume
                 U _ZN3Php9Extension6moduleEv
                 U _ZN3Php9ExtensionC1EPKcS2_i
                 U _ZN3Php9ExtensionD1Ev

Answer 1

解决这一问题的方法是删除编译后的文件，因为它们不会被$ make && sudo make install覆盖。

所以$ rm -f main.o yourextension.so && make && sudo make install在这里做了个小把戏

Answer 2

首先，你必须正确运行它。应该运行以下命令来编译它。

1. 制作
2. sudo make安装
3. 制作-B
4. Php test.php

你必须遵循这四个步骤。