libcurl升级后找不到libcurl.so.3解决之法_PHP教程

cd /usr/lib 或者 cd /usr/lib64
ln -s libcurl.so.4 libcurl.so.3

#include "curl/curl.h"
#pragma comment(lib, "libcurl.lib")

long writer(void *data, int size, int nmemb, string &content);
bool CurlInit(CURL *&curl, const char* url,string &content);
bool GetURLDataBycurl(const char* URL, string &content);

void main()
{
char *url ="http://www.bKjia.c0m";
string content;
if ( GetURLDataBycurl(url,content))
{
printf("%sn",content);

}
getchar();
}

bool CurlInit(CURL *&curl, const char* url,string &content)
{
CURLcode code;
string error;
curl = curl_easy_init();
if (curl == NULL)
{
printf( "Failed to create CURL connectionn");
return false;
}
code = curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);
if (code != CURLE_OK)
{
printf( "Failed to set error buffer [%d]n", code );
return false;
}
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
code = curl_easy_setopt(curl, CURLOPT_URL, url);
if (code != CURLE_OK)
{
printf("Failed to set URL [%s]n", error);
return false;
}
code = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
if (code != CURLE_OK)
{
printf( "Failed to set redirect option [%s]n", error );
return false;
}
code = curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
if (code != CURLE_OK)
{
printf( "Failed to set writer [%s]n", error);
return false;
}
code = curl_easy_setopt(curl, CURLOPT_WRITEDATA, &content);
if (code != CURLE_OK)
{
printf( "Failed to set write data [%s]n", error );
return false;
}
return true;
}

long writer(void *data, int size, int nmemb, string &content)
{
long sizes = size * nmemb;
string temp(data,sizes);
content += temp;
return sizes;
}

bool GetURLDataBycurl(const char* URL, string &content)
{
CURL *curl = NULL;
CURLcode code;
string error;

code = curl_global_init(CURL_GLOBAL_DEFAULT);
if (code != CURLE_OK)
{
printf( "Failed to global init default [%d]n", code );
return false;
}

if ( !CurlInit(curl,URL,content) )
{
printf( "Failed to global init default [%d]n" );
return PM_FALSE;
}
code = curl_easy_perform(curl);
if (code != CURLE_OK)
{
printf( "Failed to get '%s' [%s]n", URL, error);
return false;
}
long retcode = 0;
code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE , &retcode);
if ( (code == CURLE_OK) && retcode == 200 )
{
double length = 0;
code = curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD , &length);
printf("%d",retcode);
FILE * file = fopen("1.gif","wb");
fseek(file,0,SEEK_SET);
fwrite(content.c_str(),1,length,file);
fclose(file);

//struct curl_slist *list;
//code = curl_easy_getinfo(curl,CURLINFO_COOKIELIST,&list);
//curl_slist_free_all (list);

return true;
}
else
{
// debug1( "%s n ",getStatusCode(retcode));
return false;
}
curl_easy_cleanup(curl);
return false;
}