Mine

static void php_gtk_startup_shared_extensions(int module_number)
{
	zval exts_val;
	char *exts;
	char *ext_name;

	if (zend_get_configuration_directive("php-gtk.extensions", sizeof("php-gtk.extensions"), &exts_val) == FAILURE)
		return;

	exts = estrndup(Z_STRVAL(exts_val), Z_STRLEN(exts_val));

	ext_name = strtok(exts, ", ");
	while (ext_name) {
		php_gtk_dl(ext_name, module_number);
		ext_name = strtok(NULL, ", ");
	}
	efree(exts);
}