我正在尝试使用Zend框架创建一个用C语言编写的.so PHP扩展。使用独立扩展,一切都很好。但是,如果我尝试在我的扩展中使用其他一些动态链接库,我会收到以下错误:
PHP Warning: dl(): Unable to load dynamic library '/usr/lib/php5/20121212/test.so' - /usr/lib/php5/20121212/test.so: undefined symbol: _Z5hellov in /var/www/test.php on line 2
PHP Fatal error: Call to undefined function my_function() in /var/www/test.php on line 3
我编译过libhello.so并复制到同一目录/ usr / lib / php5 / 20121212 / 我如何在test.so模块中使用它?
以下是源代码:
test.c的:
#include "php.h"
#include "hello.h"
ZEND_FUNCTION( my_function );
ZEND_FUNCTION(Hello);
zend_function_entry firstmod_functions[] =
{
ZEND_FE(my_function, NULL)
ZEND_FE(Hello, NULL)
{NULL, NULL, NULL}
};
zend_module_entry firstmod_module_entry =
{
STANDARD_MODULE_HEADER,
"First Module",
firstmod_functions,
NULL,
NULL,
NULL,
NULL,
NULL,
NO_VERSION_YET,
STANDARD_MODULE_PROPERTIES
};
ZEND_GET_MODULE(firstmod)
ZEND_FUNCTION( my_function )
{
char *str; int str_len;
long l;
if(ZEND_NUM_ARGS() != 2) WRONG_PARAM_COUNT;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sl",
&str, &str_len, &l) == FAILURE) {
return;
}
zend_printf("%s \r\n", str);
zend_printf("%ld \r\n", l);
RETURN_LONG(1);
}
ZEND_FUNCTION (Hello) {
hello();
}
hello.h:
#include <stdio.h>
void hello();
的hello.c:
#include "hello.h"
void hello () {
printf("%s\n", "Hello, world!");
}
test.php的:
<?php
dl("test.so");
my_function("123",12);
Hello();
?>
答案 0 :(得分:2)
为了使某个函数对php用户可见,您需要使用宏PHP_FUNCTION()
:
hello.h:
PHP_FUNCTION(hello_world);
test.c的:
ZEND_BEGIN_ARG_INFO_EX(arginfo_hello_world, 0, 0, 2)
ZEND_ARG_INFO(0, arg1_name)
ZEND_ARG_INFO(0, arg2_name)
ZEND_END_ARG_INFO()
...
const zend_function_entry pcap_functions[] = {
...
PHP_FE(my_function, arginfo_hello_world)
...
};
...
PHP_FUNCTION( my_function )
{
char *str; int str_len;
long l;
if(ZEND_NUM_ARGS() != 2) WRONG_PARAM_COUNT;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sl",
&str, &str_len, &l) == FAILURE) {
return;
}
zend_printf("%s \r\n", str);
zend_printf("%ld \r\n", l);
RETURN_LONG(1);
}
...