Run a script once yes and once no

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I’m having a hard time creating a logic and/or code.

I have a Landing page that I need in a simple way, preferably without using database, run a script once yes and another no.

For example:

  • User 1 register: executaScript()
  • User 2 sign up: does not execute the script
  • User 3 register: executaScript()
  • User 4 register: does not execute the script
  • User 5 register: executaScript()
  • User 6 register: does not execute the script
  • User 7 register: executaScript()
  • User 8 sign up: does not execute the script

...

I even believe it can be done using a simple database to control with true or false, but I’ve been bumping into logic for some time. Anyone can help?

Can be done in PHP or Vanilla Javascript.

php javascript logic

3 answers

1

Users are registered where? They have some unique and sequential identification number, just do:

if($id_do_ususario % 2 === 0){
    executaScript();
}

That way when the id for 1 it will not trigger, when it is 2 it will, when it is 3 it will not execute the command... It will only execute the command on numbers divisible by 2.

  • 1

    I thought of the same solution.

  • Users are registered in a database, but during this registration a pixel is fired to count conversion in the campaign. Then this pixel needs to be fired once yes and once no, regardless of who is registering or when.

  • So, if there is an auto-increment primary key, you can use the mysqli_insert_id(), this will be the user id. This will not work if you use Mysql Transaction because it may have gaps.

0

Hello, I don’t know much about PHP, but for what you want I think a simple solution +- like this:

$file = fopen("verifica.txt", 'r');
$ler = fgets($file, 1024);

if($ler > 0){
    fwrite($file, "1"); //Grava "1" no arquivo para saber que foi executada a função
    executaScript();
} else {
    fwrite($file, "0"); //Grava "0" no arquivo para saber que NÃO foi executada a função
}

fclose($file);

  • Thanks @Daniel for the help, I had to modify the code a little to work but its logic is correct.

0

Solution to the question:

$ler = file_get_contents("verifica.txt");

if($ler == "0"){
    file_put_contents("verifica.txt","1"); //Grava "1" no arquivo para saber que foi executada a função
    executaScript();
} else {
    file_put_contents("verifica.txt","0"); //Grava "0" no arquivo para saber que NÃO foi executada a função
}

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