Correct logic and set of time for variable - php

Question

I have 3 functions work(), timeLimits(), and search(). I'm trying to do some check in timeLimits() and if some of the returns are true the script becomes blocked for a certain time.
Everything works fine with checks and blocks. What isn't working is updating the variable which holds the time until when will be blocked and checking when the block ends.
So, here are the functions:
const TOTAL_BLOCK_TIME = 20; // sec
const TOTAL_OPERATING_TIME_BEFORE_BLOCK = 10; // sec
private $worker;
private $startTime;
private $afterBlock;
private $isBlocked = false;
public function __construct()
{
$this->worker->addServer();
$this->worker->addFunction("myfunction", array($this, "search"));
$this->startTime = time();
$this->afterBlock = time() - 1;
}
public function work()
{
while (true) {
$this->worker->work();
}
}
public function timeLimits()
{
$currentTime = time();
$timePassed = $currentTime - $this->startTime;
if ($timePassed > self::TOTAL_OPERATING_TIME_BEFORE_BLOCK) {
$this->afterBlock = $currentTime + self::TOTAL_BLOCK_TIME;
return true;
}
return false;
}
public function search($job)
{
if ( $this->timeLimits() ) {
return 'Blocked until:'.$this->afterBlock;
}
// db query, the rest of the code
// it wont be executed if $this->timeLimits() return true
}
The problem: When timeLimits() return true and the script is blocked each new request updates the $this->afterBlock again. I guess is because I have $this->afterBlock = $currentTime + self::TOTAL_WORKER_SLEEP_TIME; in the if condition and each time it is in the condition the variable gets an update.
What I don't know is how to update this variable only once e.g. when it is entered in the condition, not every time I call if ( $this->timeLimits() ) { ... }
Can anyone help here?

Answer 1

You can add a flag to keep track of the block status and update the $this->afterBlock only when the flag is false.
const TOTAL_BLOCK_TIME = 20; // sec
const TOTAL_OPERATING_TIME_BEFORE_BLOCK = 10; // sec
private $isBlocked = false;
public function work()
{
while (true) {
$this->work();
}
}
public function timeLimits()
{
$currentTime = time();
$timePassed = $currentTime - $this->startTime;
if ($timePassed > self::TOTAL_OPERATING_TIME_BEFORE_BLOCK && !$this->isBlocked) {
$this->afterBlock = $currentTime + self::TOTAL_BLOCK_TIME;
$this->isBlocked = true;
}
return $this->isBlocked && $currentTime < $this->afterBlock;
}
public function search($job)
{
if ( $this->timeLimits() ) {
return 'Blocked until:'.$this->afterBlock;
}
// db query, the rest of the code
// it wont be executed if $this->timeLimits() return true
}