@programminginc - страница 2103

Anonymous

Can I post stack overflow link here ?

Anonymous

I want save op_array (c program) for PHP .

Serhii

I want save op_array (c program) for PHP .

what is op_array

Anonymous

It is PHP byte code

Anonymous

Please check PHP c source code

Igor🇺🇦

Please check PHP c source code

Why do you need to save it to file? You can call C/C++ code from PHP and back

Anonymous

I am developing c extension

Anonymous

How to serialize c pointer struct with simple function

Anonymous

Can I use mmap ?

Dima

Lol

Igor🇺🇦

I am developing c extension

What is a C extensions? I've heard of PHP extension, but don't know what C extension is. Anyway - if you want to serialize anything you need to come up with some standard representation of your data structure. You can't just save it as it is in a memory. For example pointers are meaningless in a different process that will read your "save"

Anonymous

struct _zend_op { const void *handler; znode_op op1; znode_op op2; znode_op result; uint32_t extended_value; uint32_t lineno; zend_uchar opcode; zend_uchar op1_type; zend_uchar op2_type; zend_uchar result_type; }; struct _zend_op_array { /* Common elements */ zend_uchar type; zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */ uint32_t fn_flags; zend_string *function_name; zend_class_entry *scope; zend_function *prototype; uint32_t num_args; uint32_t required_num_args; zend_arg_info *arg_info; /* END of common elements */ int cache_size; /* number of run_time_cache_slots * sizeof(void*) */ int last_var; /* number of CV variables */ uint32_t T; /* number of temporary variables */ uint32_t last; /* number of opcodes */ zend_op *opcodes; ZEND_MAP_PTR_DEF(void , run_time_cache); ZEND_MAP_PTR_DEF(HashTable *, static_variables_ptr); HashTable *static_variables; zend_string vars; /* names of CV variables */ uint32_t *refcount; int last_live_range; int last_try_catch; zend_live_range *live_range; zend_try_catch_element *try_catch_array; zend_string *filename; uint32_t line_start; uint32_t line_end; zend_string *doc_comment; int last_literal; zval *literals; void *reserved[ZEND_MAX_RESERVED_RESOURCES]; };

Dima

struct _zend_op { const void *handler; znode_op op1; znode_op op2; znode_op result; uint32_t extended_value; uint32_t lineno; zend_uchar opcode; zend_uchar op1_type; zend_uchar op2_type; zend_uchar result_type; }; struct _zend_op_array { /* Common elements */ zend_uchar type; zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */ uint32_t fn_flags; zend_string *function_name; zend_class_entry *scope; zend_function *prototype; uint32_t num_args; uint32_t required_num_args; zend_arg_info *arg_info; /* END of common elements */ int cache_size; /* number of run_time_cache_slots * sizeof(void*) */ int last_var; /* number of CV variables */ uint32_t T; /* number of temporary variables */ uint32_t last; /* number of opcodes */ zend_op *opcodes; ZEND_MAP_PTR_DEF(void , run_time_cache); ZEND_MAP_PTR_DEF(HashTable *, static_variables_ptr); HashTable *static_variables; zend_string vars; /* names of CV variables */ uint32_t *refcount; int last_live_range; int last_try_catch; zend_live_range *live_range; zend_try_catch_element *try_catch_array; zend_string *filename; uint32_t line_start; uint32_t line_end; zend_string *doc_comment; int last_literal; zval *literals; void *reserved[ZEND_MAX_RESERVED_RESOURCES]; };

Format the code

Francisco

Format the code

Honestly, I don't think it would make much more difference hahaha

Dima

Indeed

Anonymous

Please check attached file

Dima

So?

Dima

Doesn’t tell anything

Anonymous

Formated code

Dima

So?

Dima

Learn the basics first

Anonymous

struct _zend_op { const void * handler; znode_op op1; znode_op op2; znode_op result; uint32_t extended_value; uint32_t lineno; zend_uchar opcode; zend_uchar op1_type; zend_uchar op2_type; zend_uchar result_type; }; struct _zend_op_array { /* Common elements */ zend_uchar type; zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */ uint32_t fn_flags; zend_string * function_name; zend_class_entry * scope; zend_function * prototype; uint32_t num_args; uint32_t required_num_args; zend_arg_info * arg_info; /* END of common elements */ int cache_size; /* number of run_time_cache_slots * sizeof(void*) */ int last_var; /* number of CV variables */ uint32_t T; /* number of temporary variables */ uint32_t last; /* number of opcodes */ zend_op * opcodes; ZEND_MAP_PTR_DEF(void , run_time_cache); ZEND_MAP_PTR_DEF(HashTable * , static_variables_ptr); HashTable * static_variables; zend_string vars; /* names of CV variables */ uint32_t * refcount; int last_live_range; int last_try_catch; zend_live_range * live_range; zend_try_catch_element * try_catch_array; zend_string * filename; uint32_t line_start; uint32_t line_end; zend_string * doc_comment; int last_literal; zval * literals; void * reserved[ZEND_MAX_RESERVED_RESOURCES]; };

Anonymous

Can I save data without Serialization ?

Anonymous

struct _zend_op { const void * handler; znode_op op1; znode_op op2; znode_op result; uint32_t extended_value; uint32_t lineno; zend_uchar opcode; zend_uchar op1_type; zend_uchar op2_type; zend_uchar result_type; }; struct _zend_op_array { /* Common elements */ zend_uchar type; zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */ uint32_t fn_flags; zend_string * function_name; zend_class_entry * scope; zend_function * prototype; uint32_t num_args; uint32_t required_num_args; zend_arg_info * arg_info; /* END of common elements */ int cache_size; /* number of run_time_cache_slots * sizeof(void*) */ int last_var; /* number of CV variables */ uint32_t T; /* number of temporary variables */ uint32_t last; /* number of opcodes */ zend_op * opcodes; ZEND_MAP_PTR_DEF(void , run_time_cache); ZEND_MAP_PTR_DEF(HashTable * , static_variables_ptr); HashTable * static_variables; zend_string vars; /* names of CV variables */ uint32_t * refcount; int last_live_range; int last_try_catch; zend_live_range * live_range; zend_try_catch_element * try_catch_array; zend_string * filename; uint32_t line_start; uint32_t line_end; zend_string * doc_comment; int last_literal; zval * literals; void * reserved[ZEND_MAX_RESERVED_RESOURCES]; };

/warn long code snippet

Dima

/warn long code snippet

Dayum I wanted to

Dima

Learn the basics first before writing a code

Igor🇺🇦

struct _zend_op { const void * handler; znode_op op1; znode_op op2; znode_op result; uint32_t extended_value; uint32_t lineno; zend_uchar opcode; zend_uchar op1_type; zend_uchar op2_type; zend_uchar result_type; }; struct _zend_op_array { /* Common elements */ zend_uchar type; zend_uchar arg_flags[3]; /* bitset of arg_info.pass_by_reference */ uint32_t fn_flags; zend_string * function_name; zend_class_entry * scope; zend_function * prototype; uint32_t num_args; uint32_t required_num_args; zend_arg_info * arg_info; /* END of common elements */ int cache_size; /* number of run_time_cache_slots * sizeof(void*) */ int last_var; /* number of CV variables */ uint32_t T; /* number of temporary variables */ uint32_t last; /* number of opcodes */ zend_op * opcodes; ZEND_MAP_PTR_DEF(void , run_time_cache); ZEND_MAP_PTR_DEF(HashTable * , static_variables_ptr); HashTable * static_variables; zend_string vars; /* names of CV variables */ uint32_t * refcount; int last_live_range; int last_try_catch; zend_live_range * live_range; zend_try_catch_element * try_catch_array; zend_string * filename; uint32_t line_start; uint32_t line_end; zend_string * doc_comment; int last_literal; zval * literals; void * reserved[ZEND_MAX_RESERVED_RESOURCES]; };

Process of "Saving objects in memory is called serialization. You can't save without it. There is no way of saving this without large work on your part or using some library

Anonymous

Thank you

Igor🇺🇦

Arshid what is the problem you're trying to solve?

Anonymous

Making cache PHP extension

Anonymous

Arshid what is the problem you're trying to solve?

I checked binn, json etc

Anonymous

I think, I need add data one by one, am I right ?

Anonymous

Any simple serialization library available? Like seriouse(op_array) like;

Igor🇺🇦

Making cache PHP extension

Generic serialization is not easy. You need to tell what should and shouldn't be saved. I'm not familiar with PHP very well, but it knows how to save PHP classes. Why do you need C? In short - somebody has to describe how to save every structure in your specific object.

Anonymous

I want save all elements in op_array

Igor🇺🇦

Why do you need this specific structure? Can't you save only relevant data and re build this object afterwards?

Anonymous

zend_op is array.

Anonymous

I am confused, how to save this zend_op array

Igor🇺🇦

I think you need to go to drawing board and redesign whatever you are trying to do. This requires deep understanding of PHP. Can't help you with that. Sorry ☹️

Anonymous

@LaurenSyme i think you are not supposed to be here😂😂.

Fabio

Hi, everyone...i've a dumb question to do

Fabio

I'm trying to concatenate an int to a const char *, I've try a thousands of way to do that...so which is the best method to that?

Fabio

And when I cast the integer, what happened, I mean something is put before or after the number?

Francisco

I'm trying to concatenate an int to a const char *, I've try a thousands of way to do that...so which is the best method to that?

First, what have you tried? Show some code at least

你那個朋友

if performance is not much an issue, one can simply std::to_string(the int).c_str()

Artöm

I'm trying to concatenate an int to a const char *, I've try a thousands of way to do that...so which is the best method to that?

C or C++?

Artöm

Anyway use sprintf and preallocated buffer

Fabio

C or C++?

c++11

Serhii

c++11

std::stringstream

Fabio

I used ("imu" + std::to_string(i)).c_str() or strcat("imu_" ,std::to_string(i).c_str())

Artöm

Use std::string and either std::to_string or std::to_chars

Artöm

c++11

Why char* then?

Fabio

Publisher(const char * topic_name, Msg * msg, int endpoint = rosserial_msgs::TopicInfo::ID_PUBLISHER) :

Fabio

i don't know, this is the constructor i'm using from ros_lib

Artöm

Why not std::string?

Serhii

Use std::string and either std::to_string or std::to_chars

>c++11 >to_chars)

Artöm

Well, use 17

Fabio

Like to_chars(i)

Artöm

Nope, read the docs

Igor🇺🇦

I used ("imu" + std::to_string(i)).c_str() or strcat("imu_" ,std::to_string(i).c_str())

What are you trying to achieve? 🤷‍♂️

Fabio

What are you trying to achieve? 🤷‍♂️

i wanna build some ros topic with different topic names created runtime

Fabio

like "imu_1" "imu_2" and so on

Fabio

using rosserial_arduino, but rosserial_server crash launching an exception saying that topic name is not valid (I think it is somenthing related to the cast, which made strange character)

Igor🇺🇦

using rosserial_arduino, but rosserial_server crash launching an exception saying that topic name is not valid (I think it is somenthing related to the cast, which made strange character)

So just use string("...") +...

Igor🇺🇦

You need to concatenate strings not add something to char*

Fabio

So just use string("...") +...

+i or a cast to string of i?

Fabio

i is a number

Igor🇺🇦

+i or a cast to string of i?