can i use || and && together? - php

Question

im trying to open a log file and see if a text does not exist, if it doesnt exist then continue, but at the same time i want to check its the log file has not been sent per mail already.
public function start() {
$pattern = $this->config["twp_pattern"] ?? '*.log';
$pathLog = (isset($this->config["twp_path"])) ? trim($this->config["twp_path"], '/') : 'var/log';
$lastRun = (isset($this->config['twp_last_run'])) ? str_replace('T', ' ', $this->config['twp_last_run']) : false;
$path = getcwd() . '/' . $pathLog . '/' . $pattern;
$this->now = new \DateTime();
foreach (glob($path) as $log) {
$open = fopen($log, 'r') or die ('File opening failed');
$content = fread($open,filesize($log));
var_dump($content);
fclose($log);
if (!$lastRun || filectime($log) < strtotime($lastRun) && $this->checkIfAlreadyExists($content) === false) {
continue;
}
$logs[] = $log;
}
if (!empty($logs)) {
$success =$this->sendMail($logs);
}
if($success === false){
return false;
}
$this->setLastRun();
return true;
}
public function checkIfAlreadyExists($content){
if (!preg_match_all('/already exists/', $content)) {
echo "is not there";
return false;
}else{
echo "is there";
return true;
}
}
my problem is even tho email has been sent, it will send it again when i run
function start()
if i remove the && $this->checkIfAlreadyExists($content) === false, it will not longer send logs per mail that has already been sent. can anyone spot my mistake ? Thanks

Answer 1

Fixed by changing my if statement
if ((!$lastRun || filectime($log) < strtotime($lastRun)) || ($this->checkIfAlreadyExists($content))) {
continue;
}
Thanks for your time and the help ! <3