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bloader提供一個(gè)常用的autoload函數(shù)ld,以及兩個(gè)輔助函數(shù),ld_new(實(shí)例化)和ld_unset(銷毀對(duì)象).
#1 bloader會(huì)自動(dòng)搜索當(dāng)前文件 或 當(dāng)前目錄下的<類名>.class.php文件,以及通過(guò)'_MODULES'常量定義的路徑,實(shí)例化類返回對(duì)象.
#2 可直接使用ld('類名')操作對(duì)象(見實(shí)例 1-1)
#3 bloader會(huì)在當(dāng)前作用域自動(dòng)注冊(cè)一個(gè)以類名為變量名的變量'$類名'(見實(shí)例 1-2)
#4 bloader中使用ld函數(shù)訪問(wèn)對(duì)象是全局范圍有效 (見實(shí)例 1-3)
#5 使用ld_new實(shí)例化多個(gè)不同的對(duì)象,而不注冊(cè)變量 (見實(shí)例 1-4)
#6 使用ld_unset注銷已經(jīng)實(shí)例化的對(duì)象 (見實(shí)例 1-5)
下載地址:http://code.google.com/p/bloader/downloads/detail?name=bloader.tar.gz
安裝:
phpize
./configure --with-php-config=php-config --enable-bloader
make && make install
實(shí)例 1-1
復(fù)制代碼 代碼如下:
<?php
///define('_MODULES',dirname( __FILE__ ).'/class'); ///可選配置,在指定目錄下查找類文件,以便于實(shí)例化
ld('c1',array('1','2'))->a1="a1"; ///參數(shù)2為構(gòu)造函數(shù)的參數(shù)
ld('c1')->a2='a2';
ld('c1')->printt();
/**
show:
c1 Object
(
[a1] => a1
[a2] => a2
[a3] => Array
(
[0] => 1
[1] => 2
)
)
*/
?>
復(fù)制代碼 代碼如下:
<?php
/**
example:
./class/c1.class.php:
*/
class c1
{
public $a1=123;
public $a2='abc';
public $a3=100;
public function __construct($ls)
{
$this->a3=$ls;
}
public function printt()
{
print_r(ld('c1')); /**使用了全局特性*/
}
}
?>
實(shí)例 1-2
復(fù)制代碼 代碼如下:
<?php
...
ld('users');
//自動(dòng)注冊(cè)了$users變量
$users->method();
....
?>
實(shí)例 1-3
復(fù)制代碼 代碼如下:
<?php
ld('users');
printt(); //打印對(duì)象
...
function printt()
{
var_dump(ld('users'));
}
?>
實(shí)例 1-4
復(fù)制代碼 代碼如下:
<?php
$users_1=ld_new('users');
$users_2=ld_new('users');
...
?>
實(shí)例 1-5
復(fù)制代碼 代碼如下:
<?php
ld('users');
unset_users();
...
function unset_users()
{
ld_unset('users');
}
?>
奉上主要代碼供拍磚
復(fù)制代碼 代碼如下:
...
php_FUNCTION(ld)
{
char *obj_name;
int slen;
zval **var,*para = NULL;
if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|z", &obj_name,&slen,¶) != SUCCESS)
{
zend_error(E_ERROR, "parameters failed.");
}
else
{
zval_dtor(return_value);
if(zend_hash_find(&EG(symbol_table),obj_name,slen+1,(void **) &var)!=SUCCESS)
{
ld_autoload_path(obj_name TSRMLS_DC);
*return_value = *ld_new_class(obj_name,slen,para,1);
}
else
{
*return_value = **var;
}
zval_copy_ctor(return_value);
}
}
php_FUNCTION(ld_new)
{
char *obj_name;
int slen;
zval *para = NULL;
if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|z", &obj_name,&slen,¶) != SUCCESS)
{
zend_error(E_ERROR, "parameters failed.");
}
else
{
zval_dtor(return_value);
ld_autoload_path(obj_name TSRMLS_DC);
*return_value = *ld_new_class(obj_name,slen,para,0);
zval_copy_ctor(return_value);
}
}
php_FUNCTION(ld_unset)
{
char *obj_name;
int slen;
if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &obj_name,&slen) != SUCCESS)
{
zend_error(E_ERROR, "parameters failed.");
}
else
{
zend_hash_del(&EG(symbol_table),obj_name,slen+1);
RETURN_TRUE;
}
}
/* }}} */
static zval *ld_new_class(char *obj_name,int slen,zval *para,int is_set)
{
zval *obj;
zend_class_entry **class_entry;
zend_function *constructor;
MAKE_STD_ZVAL(obj);
if(zend_lookup_class(obj_name, slen, &class_entry TSRMLS_CC)==SUCCESS)
{
object_init_ex(obj, *class_entry);
constructor = Z_OBJ_HT_P(obj)->get_constructor(obj TSRMLS_CC);
if (constructor != NULL)
{
int is_arg = (para == NULL) ? 0 : 1;
zend_call_method(&obj, *class_entry,&constructor, "__construct", 11, NULL, is_arg, para, NULL TSRMLS_CC);
}
if(is_set==1) ZEND_SET_SYMBOL(&EG(symbol_table),obj_name, obj);
}
else
{
ZVAL_FALSE(obj);
}
return obj;
}
static int ld_autoload_path(char *class_name TSRMLS_DC)
{
char *ext_name = ".class.php";
char *file_path;
zval const_root;
int path_len = spprintf(&file_path, 0, "%s%s",class_name,ext_name);
if(ld_autoload_file(file_path,path_len TSRMLS_DC)==SUCCESS) return SUCCESS;
if(zend_get_constant("_MODULES",8,&const_root TSRMLS_CC))
//if(zend_get_constant_ex("_MODULES",8,const_root,NULL, 0 TSRMLS_CC)) //ZEND_FETCH_CLASS_SILENT
{
if(Z_TYPE(const_root) == IS_STRING)
{
char *root_file_path;
int root_path_len = spprintf(&root_file_path, 0, "%s/%s", Z_STRVAL(const_root),file_path);
return ld_autoload_file(root_file_path,root_path_len TSRMLS_DC);
}
}
return FAILURE;
}
static int ld_autoload_file(char *file_path,int file_path_len TSRMLS_DC) /* {{{ */
{
zend_file_handle file_handle;
if (php_stream_open_for_zend_ex(file_path, &file_handle, ENFORCE_SAFE_MODE|USE_PATH|STREAM_OPEN_FOR_INCLUDE TSRMLS_CC) == SUCCESS)
{
zend_op_array *new_op_array;
unsigned int dummy = 1;
if (!file_handle.opened_path) file_handle.opened_path = estrndup(file_path, file_path_len);
if (zend_hash_add(&EG(included_files), file_handle.opened_path, strlen(file_handle.opened_path)+1, (void *)&dummy, sizeof(int), NULL)==SUCCESS)
{
new_op_array = zend_compile_file(&file_handle, ZEND_REQUIRE TSRMLS_CC);
zend_destroy_file_handle(&file_handle TSRMLS_CC);
}
else
{
new_op_array = NULL;
zend_file_handle_dtor(&file_handle TSRMLS_CC);
}
if (new_op_array)
{
zval *result = NULL;
EG(return_value_ptr_ptr) = &result;
EG(active_op_array) = new_op_array;
if (!EG(active_symbol_table)) zend_rebuild_symbol_table(TSRMLS_C);
zend_execute(new_op_array TSRMLS_CC);
destroy_op_array(new_op_array TSRMLS_CC);
efree(new_op_array);
if (!EG(exception)) if (EG(return_value_ptr_ptr))
zval_ptr_dtor(EG(return_value_ptr_ptr));
}
return SUCCESS;
}
return FAILURE;
}
...
php技術(shù)：zend api擴(kuò)展的php對(duì)象的autoload工具，轉(zhuǎn)載需保留來(lái)源！
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