Curl return TRUE if is there CURLOPT_RETURNTRANSFER, TRUE ? - php

Hi guys I'll explain my code:

I have a telegram bot and I have to write many messages quickly in a group and to write a message it is necessary to execute a link (using the Telegram Api).

To do this I use Curl:

curl_setopt($ch, CURLOPT_URL, $url_telegram);
curl_setopt($ch, CURLOPT_HEADER, 0);    
curl_setopt($ch, CURLOPT_VERBOSE, 0);   
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_USERAGENT, getRandomUserAgent());  
curl_setopt($ch, CURLOPT_HTTPHEADER, $header); 
curl_setopt($ch, CURLOPT_TIMEOUT, 80);  


$return= curl_exec($ch);        
if($return !== FALSE){  //cURL works
   save_variable_in_js_file();
}
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If the message is written I believe it must be:

$return == TRUE or maybe != False
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So if is not false is run a functionsave_variable_in_js_file() that save a variable in a javascript file. The strange thing is that some message are not written by bot, it seems not works and maybe its $return was == FALSE, but anyway the function is run and the variable saved in the file.

Why this ? I know withCURLOPT_RETURNTRANSFER, TRUE $return's curl can berequest orfalse.

Is this the problem ?

The method used withAPI Telegram to send message issendMessage: https://core.telegram.org/method/messages.sendMessage

EDIT:

When i write a message with bot, and all is ok, it return thisJSON:

ok: true
result: 
  message_id:   546
  from: 
    id: xxx1
    is_bot: true
    first_name: "name bot"
    username:   "name bot"
  chat: 
    id  xxx111
    title   "name group"
    username    "name bot"
    type    "supergroup"
    date    1627749641
    text    "Ciao"
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maybe I could do this:

if(json_decode($return, true) ['ok']){
   save_variable_in_js_file();
}
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What do you think ?

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