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I'm trying to make a world border by getting player coordinate and stopping them from moving past that coordinate. What should I do? Using Pocketmine 4.0.0
I've tried to find a method to get the coordinates but I don't know what to do.
You can use the PlayerMoveEvent.
use pocketmine\event\player\PlayerMoveEvent;
public function onPlayerMove(PlayerMoveEvent $event) : void{
$player = $event->getPlayer();
$world = $player->getWorld();
$dat = $this->getConfig()->get("border");
if(isset($dat[$world->getDisplayName()])){
$v1 = new Vector3($world->getSpawnLocation()->getX(), 0, $world->getSpawnLocation()->getZ());
$v2 = new Vector3($player->getLocation()->getX(), 0, $player->getLocation()->getZ());
if($v2->distance($v1) >= $dat[$world->getDisplayName()]){
$event->cancel();
}
}
}
This will get the coordinates of the player and set the border from the world spawn.
Then in your configuration file:
border:
# world-name: border-size
world: 1000
You can add as many world's as needed. However, some hacked clients can bypass this method.
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Can somebody explain me this code? I don't understand why it outputs 21.
<?php
function math($t){
if($t==0)
return 0;
return $t+ math($t-1);
}
echo math(6);
?>
It will echo 21. I have no idea how it got this result.
The function is recursive, it calls itself until it gets to 0, then adds all the previously returned values (6,5,4,3,2,1).
function math($t){
if($t==0)
return 0;
return $t+ math($t-1);
}
echo math(6);
So on loop one it gets 6 then 6-1 = 5 so math gets called again with 5 this time and so on. Take a look at http://sandbox.onlinephpfunctions.com/code/e228f3b696c5058efee03fa978a09179c1f2ffbb.
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I have a function that builds a regex based on an array. The problem is that PHP keeps adding backslashes to some of the characters, and it keeps messing up the regex.
Here is my function:
private static $allowedPermissions = [
/*SV*/
'user_add',
'user_edit',
'user_delete',
'user_view'];
$regexrule = '/';
foreach (self::$allowedPermissions as $allowedPermission) {
$regexrule .= '\b'.$allowedPermission.'\b';
if(end(self::$allowedPermissions) !== $allowedPermission) $regexrule .='|';
}
$regexrule .= "/";
return 'regex:'.$regexrule;
It is adding backslashes where I don't expect them:
regex:\/\\buser_add\\b|\\buser_edit\\b|\\buser_delete\\b|\\buser_view\\b|\\bpatient_add\\b|\\bpatient_edit\\b|\\bpatient_delete\\b|\\bpatient_view\\b|\\bmake_per\\b|\\bmake_per_withconfirmation\\b|\\bconfirm_per\\b|\\beval_per\\b|\\beval_per_withconfirmation\\b|\\bconfirm_per_report\\b\/
Backup screenshot of regex
Is there a workaround?
I found out that returning it in json format was adding the backslashes.
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How can I create a crawler in php which search for a particular string in a webpage and returns whether it is present or not?
Try this function I made, it takes in the pages URL and the string to look for in this URL's content.
<?php
var_dump(searchPage("http://google.com", "Tacos")); //False
var_dump(searchPage("http://google.com", "Google")); //True
function searchPage($url, $string){
$input = file_get_contents($url);
if (strpos($input,$string) !== false) {
return true;
}else{
return false;
}
}
?>
I hope this helped,
Sebastian
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Following is my piece of code which writes to file.
<?php
$fileWrite = fopen("c.txt", "w+");
for($i=0;$i<5;$i++) {
$bytes = fwrite($fileWrite, $i);
}
fclose($fileWrite);
I am getting 01234. It means , pointer is appending to last location, I don't want to append data. Instead need to write 4 in the file.
Then you need to ftruncate the file before writing to it:
ftruncate($fileWrite, 0);
$bytes = fwrite($fileWrite, $i);
This is obviously pretty pointless to do in a loop, but I expect you know that.
I personally recommend using file_put_contents for this simple task. It's easier to use and will not append to the end of the file (unless specified that way).
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I don't know exactly how to say this, I'll use an example.
//[$var:Username|n] will print username with n length
$myText = 'The participants are [$var:Username|10], [$var:Username|8], and [$var:Username|6]';
$username = array('Alexandrite', 'Maximillian', 'Angelina');
$result = someFunction('[$var:Username|n]', $username, $myText);
echo $result;
//The participants are Alexandrit, Maximill, and Angeli
Any idea how to do this? Maybe using preg_replace?
I'm interested to know why you would even need to do this. Regardless:
preg_replace_callback('/\[\$var:Username\|(\d+)\]/', function ($match)
use (&$count, $username
) {
return substr($username[$count++], 0, $match[1]);
}, $myText);