Zend API Extension PHP object AutoLoad tool _php Tutorial

Source: Internet
Author: User
Tags autoload spl
The AutoLoad function, like SPL, bloader the AutoLoad tool for PHP objects, but is simpler and more efficient and more flexible to configure.

Bloader provides a common autoload function, LD, and two auxiliary functions, ld_new (instantiation) and Ld_unset (destroying objects).

#1 Bloader will automatically search for the current file or the current directory <类名> The. class.php file, along with the path defined by the ' _modules ' constant, instantiates the class to return the object.
#2 can manipulate objects directly using LD (' Class name ') (see example 1-1)
#3 Bloader will automatically register a variable ' $ class name ' with the class name as the variable name in the current scope (see example 1-2)
Accessing an object using the LD function #4 Bloader is globally valid (see Example 1-3)
#5 instantiate multiple different objects with ld_new without registering the variables (see example 1-4)
#6 unregister an already instantiated object using Ld_unset (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
Copy CodeThe code is as follows:
Define (' _modules ', DirName (__file__). ' /class '); Optional configuration to find the class file under 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
)
)
*/
?>

Copy CodeThe code is as follows:
/**
Example
./class/c1.class.php:
*/
Class C1
{
Public $a 1=123;
Public $a 2= ' abc ';
Public $a 3=100;
Public function __construct ($LS)
{
$this->a3= $ls;
}
Public Function Printt ()
{
Print_r (LD (' C1 ')); /** uses the global feature */
}
}
?>

Example 1-2
Copy CodeThe code is as follows:
...
LD (' users ');
$users variables are automatically registered
$users->method ();
....
?>

Example 1-3
Copy CodeThe code is as follows:
LD (' users ');
Printt (); Print objects
...
function Printt ()
{
Var_dump (LD (' users '));
}
?>

Example 1-4
Copy CodeThe code is as follows:
$users _1=ld_new (' users ');
$users _2=ld_new (' users ');
...
?>

Example 1-5
Copy CodeThe code is as follows:
LD (' users ');
Unset_users ();
...
function Unset_users ()
{
Ld_unset (' users ');
}
?>

The main code for the brick

Copy CodeThe code is as follows:
...
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", one, 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;
}
...

http://www.bkjia.com/PHPjc/323138.html www.bkjia.com true http://www.bkjia.com/PHPjc/323138.html techarticle The autoload function, like SPL, bloader the AutoLoad tool for PHP objects, but is simpler, more efficient, and more flexible to configure. Bloader provides a common autoload function ld, and two auxiliary letters ...

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.