PHP扩展开发-03-读取php.ini中的配置
@author niujiaming<[email protected]>
本节中我们读取一下php.ini文件中的配置。其实，读取php.ini配置的方式挺多，本次我们只讲一种，如果有兴趣的话，大家可以各自研究一下。
废话少说，我们更改一下之前的讲解方式，本次我们直接上代码。（其实是因为php扩展读取配置文件太简单了）
（假设我们建立了一个ini_read的扩展）
php_ini_read.h的改动如下：（改动的地方我用#####################标出来了################）
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef PHP_INI_READ_H
#define PHP_INI_READ_H
extern zend_module_entry ini_read_module_entry;
#define phpext_ini_read_ptr &ini_read_module_entry
#ifdef PHP_WIN32
# define PHP_INI_READ_API __declspec(dllexport)
#elif defined(__GNUC__) && __GNUC__ >= 4
# define PHP_INI_READ_API __attribute__ ((visibility(
"default"
)))
#
else
# define PHP_INI_READ_API
#
endif
#ifdef ZTS
#
include
"TSRM.h"
#
endif
PHP_MINIT_FUNCTION(ini_read);
PHP_MSHUTDOWN_FUNCTION(ini_read);
PHP_RINIT_FUNCTION(ini_read);
PHP_RSHUTDOWN_FUNCTION(ini_read);
PHP_MINFO_FUNCTION(ini_read);
/*
Declare any global variables you may need between the BEGIN
and END macros here:
ZEND_BEGIN_MODULE_GLOBALS(ini_read)
long global_value;
char *global_string;
ZEND_END_MODULE_GLOBALS(ini_read)
*/
/* In every utility function you add that needs to use variables
in php_ini_read_globals, call TSRMLS_FETCH(); after declaring other
variables used by that function, or better yet, pass in TSRMLS_CC
after the last function argument and declare your utility function
with TSRMLS_DC after the last declared argument. Always refer to
the globals in your function as INI_READ_G(variable). You are
encouraged to rename these macros something shorter, see
examples in any other php module directory.
*/
#ifdef ZTS
#define INI_READ_G(v) TSRMG(ini_read_globals_id, zend_ini_read_globals *, v)
#
else
#define INI_READ_G(v) (ini_read_globals.v)
#
endif
#
endif
/* PHP_INI_READ_H */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
PHP_FUNCTION(helloworld);#####################
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ini_read.c的改动如下：
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#
include
"config.h"
#
endif
#
include
"php.h"
#
include
"php_ini.h"
#
include
"ext/standard/info.h"
#
include
"php_ini_read.h"
/* If you declare any globals in php_ini_read.h uncomment this:
ZEND_DECLARE_MODULE_GLOBALS(ini_read)
*/
/* True global resources - no need for thread safety here */
static
int le_ini_read;
/* {{{ ini_read_functions[]
*
* Every user visible function must have an entry in ini_read_functions[].
*/
const
zend_function_entry ini_read_functions[] = {
PHP_FE(helloworld, NULL)
/* For testing, remove later. */
{NULL, NULL, NULL}
};
/* }}} */
/* {{{ ini_read_module_entry
*/
zend_module_entry ini_read_module_entry = {
#
if
ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#
endif
"ini_read"
,
ini_read_functions,
PHP_MINIT(ini_read),
PHP_MSHUTDOWN(ini_read),
NULL,#####################
NULL,#####################
NULL,#####################
#
if
ZEND_MODULE_API_NO >= 20010901
"0.1"
,
/* Replace with version number for your extension */
#
endif
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_INI_READ
ZEND_GET_MODULE(ini_read)
#
endif
/* {{{ PHP_INI
*/
PHP_INI_BEGIN()#####################
PHP_INI_ENTRY(
"ini_read.helloworld"
,
"foobar"
, PHP_INI_ALL, NULL)#####################
PHP_INI_END()#####################
/* }}} */
/* {{{ php_ini_read_init_globals
*/
/* Uncomment this function if you have INI entries
static void php_ini_read_init_globals(zend_ini_read_globals *ini_read_globals)
{
ini_read_globals->global_value = 0;
ini_read_globals->global_string = NULL;
}
*/
/* }}} */
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(ini_read)
{
REGISTER_INI_ENTRIES();#####################
return
SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(ini_read)
{
UNREGISTER_INI_ENTRIES();#####################
return
SUCCESS;
}
/* }}} */
/* Remove if there's nothing to do at request start */
/* {{{ PHP_RINIT_FUNCTION
*/
PHP_RINIT_FUNCTION(ini_read)
{
return
SUCCESS;
}
/* }}} */
/* Remove if there's nothing to do at request end */
/* {{{ PHP_RSHUTDOWN_FUNCTION
*/
PHP_RSHUTDOWN_FUNCTION(ini_read)
{
return
SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(ini_read)
{
php_info_print_table_start();
php_info_print_table_header(2,
"ini_read support"
,
"enabled"
);
php_info_print_table_end();
/* Remove comments if you have entries in php.ini
DISPLAY_INI_ENTRIES();
*/
}
/* }}} */
/* }}} */
/* The previous line is meant for vim and emacs, so it can correctly fold and
unfold functions in source code. See the corresponding marks just before
function definition, where the functions purpose is also documented. Please
follow this convention for the convenience of others editing your code.
*/
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
PHP_FUNCTION(helloworld)
{
RETURN_STRING(INI_STR(
"ini_read.helloworld"
), 1);#####################
}
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本节内容很简单，就不多说了，有问题大家可以联系我QQ 947847775