PHP communicates with C (or other languages) through message queues, complete code_PHP tutorial

/*
 * class msg
 * Use for communication between php and php;
 * Create at: 12:08 2012/10/31
 * Author: leixun(lein_urg@163.com)
 * version 1 - 14:01 2012/10/31
 */ 
class msg{ 
    private $id; 
    private $msg_id; 
    private $_serialize = true; 
   /**
     * @param $_id ID
    */ 
    public function msg($_id, $_serialize = true){ 
        if(!function_exists('msg_get_queue')) 
        { 
            die('msg queue function not installed, Reconfigure PHP with --enable-sysvmsg
'); 
        } 
        $this->id = $_id; 
        $this->msg_id = msg_get_queue ( $_id ); 
        $this->_serialize = $_serialize; 
        if ($this->msg_id === false) { 
            die(basename(__FILE__).'->'.__LINE__.': Unable to create message quee'); 
        } 
    } 
    /**
     * @data data to send
     * @type message type
    */ 
    public function send( $data, $type = 1, $blocking = false ) 
    { 
        if (!msg_send ($this->msg_id, $type, $data, $this->_serialize, $blocking, $msg_err)) 
        { 
            return "Msg not sent because $msg_errn"; 
        }
        return true; 
    } 
 
    /**
     * @param $type message type
     * @param $maxsize The maximum size of message to be accepted,
    */ 
    public function receive($no_wait = true, $type = 1 , $maxsize = 1024 ) 
    { 
        $rs = msg_receive ( $this->msg_id , $type ,  $type , $maxsize , $message , $this->_serialize, $no_wait?MSG_IPC_NOWAIT:NULL , $errorcode); 
        if($rs) 
            return $message; 
        else 
            return false; 
    } 
 
    public function remove() 
    { 
        msg_remove_queue($this->msg_id); 
    }    
} 
[php] view plaincopy
define('base_path' , dirname(__FILE__));//msg_write.php 
include(base_path.'/msg.php'); 
$msg = new msg(1, false); 
$msg1 = new msg(2, false); 
if($argv[1]=='del') $msg->remove(); 
  
  
$str = 'There are no user contributed notes for this page.'; 
while(1){ 
        $data = substr($str,0,rand(18,25)); 
        $msg->send(rand().$data, rand(1,10)); 
        echo $data." -> sentn"; 
        echo 'Get:'.$msg1->receive(false, 0).chr(10); 
        sleep(3); 
      //usleep(10000); 
} 
echo 'Done'; 
C, gcc -g -o m msg.c -lpthread;
[cpp] view plaincopy
#include  
#include  
 
#include  
#include  
#include  
#include  
#include  
#include  
#include  
#define MAX_MSG_LEN 512 
static int php_msg = -1; 
static int php_msg1 = -1; 
static int running = 1; 
static void *php_msg_handler_thread(void *arg); 
static int msg_send(int msg_id, int fd, char *data);  
struct msg_st { 
    long mtype; 
    char mtext[MAX_MSG_LEN]; 
};   
void logst(struct msg_st some_data); 
int main(int argc,char **argv) 
{ 
    printf("go 1 n"); 
    if((php_msg= msgget((key_t)1,0666|IPC_CREAT)) == -1) 
    { 
        perror("php_msg create"); 
        return 0; 
    }  
    if((php_msg1= msgget((key_t)2,0666|IPC_CREAT)) == -1) 
    { 
        perror("php_msg create"); 
        return 0; 
    } 
    ///////////////////////////////////////////////////////////////////////////////// 
    pthread_t php_msg_pthread; 
    int rs = pthread_create(&php_msg_pthread, NULL, (void*(*)(void*))php_msg_handler_thread, (void *)NULL); 
   if(rs!=0) 
    { 
        perror("php_msg_pthread create"); 
        return 0; 
    } 
    pthread_join(php_msg_pthread, NULL); 
    return 0; 
}  
static void *php_msg_handler_thread(void *arg) 
{ 
    struct msg_st php_data;      
    printf("sizeof(struct msg_st)=%dn",sizeof(struct msg_st)); 
    int msg_to_recevie = 0; 
    char* data; 
    data = malloc(MAX_MSG_LEN); 
    char *pre = "You told me:";  
    while(running){ 
        if(msgrcv(php_msg,(void *) &php_data, MAX_MSG_LEN, msg_to_recevie , 0) == -1) 
        { 
            perror("msgrcv"); 
            if(errno==E2BIG) 
            {                
                if(msgctl(php_msg,IPC_RMID,0) == -1)   
                {   
                    fprintf(stderr,"msgctl(IPC_RMID) failed n");   
                }    
            } 
            else if(errno == EINVAL) 
            { 
                sleep(1); 
            } 
        }else{       
            printf("recevier mssage : %s , type= %d, msg_to_recevie= %d;n", php_data.mtext, php_data.mtype,msg_to_recevie); 
            memset(data, '