Example code that can have wrong values and so follow incorecct execution flow.

<?php

$aaa = new TEEST();
class TEEST {
public String $AAA = ''{
get{
if(str_contains($this->AAA, ':')){
$Sub_Script_Depth = explode(':', $this->AAA)[1];
$Sub_Script_Depth = (int)$Sub_Script_Depth + 1;
$New_Script_Depth = explode(':', $this->AAA)[0].':'.$Sub_Script_Depth;
$this->AAA = $New_Script_Depth;
return $this->AAA;
}else{
$this->AAA .= ':0';
}
return $this->AAA;
}
set(String $value){
$this->AAA = $value;
}
}

public function __construct(){
    $this->main();
}

public function main(){
    $this->AAA = 'Hell World.';
    $fff = $this->AAA;
    echo '69'.$fff;
}

}