Hello,
I want to write an OO extension in C++ for my PHP 4.3.8 under linux.
I have already written some extensions in C for my own purposes, which
introduce new functions to PHP.
Studying the sources of ext/standard/dir.c, ext/ming/ming.c and the
tutorial from J Smith (http://bugs.tutorbuddy.com/phpcpp/phpcpp/) I got
already this far:
I have managed to build and link the CPP sources as a shared object
which can be loaded and called from PHP.
I have introduced the new class to PHP using the following code in the
PHP_MINIT_FUNCTION of my extension:
static zend_class_entry *url_class_entry_ptr;
static int le_url;
function_entry url_class_functions[] = {
PHP_FALIAS(url, url_init, NULL)
PHP_FALIAS(set_string, url_set_string, NULL)
{NULL, NULL, NULL}
};
static ZEND_RSRC_DTOR_FUNC(destroy_url)
{
if (rsrc->ptr) {
delete (Url_class*) rsrc->ptr;
rsrc->ptr = NULL;
}
}
PHP_MINIT_FUNCTION(url)
{
zend_class_entry url_class_entry;
INIT_CLASS_ENTRY(url_class_entry, "url", url_class_functions);
url_class_entry_ptr = zend_register_internal_class(&url_class_entry
TSRMLS_CC);
le_url = zend_register_list_destructors_ex(destroy_url, NULL, "url",
module_number);
return SUCCESS;
}
This class can be created, and the functions (methods) can be called
from PHP.
Example:
$url = new URL();
$url->set_string("12345");
Now my problem is, how can I save the pointer of my C++ class, created
in the url_init function, and restore it in the other functions/methods:
PHP_FUNCTION(url_init)
{
Url_class * url = new Url_class;
/ * code to save the address of url */
}
PHP_FUNCTION(url_set_string)
{
Url_class *url = NULL;
/* code to fetch url */
if( url != NULL ) {
url->set_string(“test”);
RETURN_TRUE;
}
RETURN_FALSE;
}
I could not work out how to do this, by studying the code of the OO
extensions I mentioned.
Can someone give me a hint, ore some example code, how to do such things?
thanks
Jan Gerritsen
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