Home >Backend Development >PHP Tutorial >Autoload tool for php objects extended by zend api_PHP tutorial
Similar to the autoload function of spl, bloader is an autoload tool for PHP objects, but it is simpler and more efficient, and the configuration is more flexible.
bloader provides a commonly used autoload function ld, and two auxiliary functions, ld_new( Instantiation) and ld_unset (destroy object).
#1 bloader will automatically search for the
#2 You can directly use ld('class name') to operate the object (see Example 1-1)
#3 bloader will automatically register a variable with the class name in the current scope The variable '$classname' (see Example 1-2)
#4 Using the ld function in bloader to access objects is globally valid (see Example 1-3)
#5 Use ld_new to instantiate multiple different object without registering variables (see Example 1-4)
#6 Use ld_unset to unregister an instantiated object (see Example 1-5)
Download address: http://code.google .com/p/bloader/downloads/detail?name=bloader.tar.gz
Installation:
phpize
./configure --with-php-config=php-config --enable -bloader
make && make install
Example 1-1
///define('_MODULES',dirname( __FILE__ ).'/class'); ///Optional configuration, search for class files in the specified directory for easy instantiation
ld('c1',array('1','2'))->a1="a1"; ///Parameter 2 is the parameter of the constructor
ld('c1')->a2= 'a2';
ld('c1')->printt();
/**
show:
c1 Object
(
[a1] => a1
[a2] => a2
[a3] => Array
(
[0] => 1
[1] => 2
)
)
*/
?>
/**
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')); /**Use global attributes*/
}
}
?>
Example 1-2
...
ld('users');
//The $users variable is automatically registered
$users->method();
....
?>
Example 1-3
ld('users');
printt(); //Print object
...
function printt()
{
var_dump(ld('users'));
}
?>
Example 1-4
$users_1=ld_new('users');
$users_2=ld_new('users');
.. .
?>
Example 1-5
ld('users');
unset_users();
...
function unset_users()
{
ld_unset('users');
}
?>
Provide the main code for bidding
...
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;
}
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