sokil

<?php

class A implements \Countable
{
  public function count() { return count($this); }
}

$a = new A();
echo count($a);

sokil

/**
Allowed chars:
8 - backspace
9 - tab
35 - end
36 - home
37 - left arruw
39 - right arrov
46 - del
48 - 0 

sokil

export PS1='[\[\e[1;33m\]\u@\h\[\e[0m\] \[\e[1;32m\]\W\[\e[0m\]]\$ '

sokil

<?php

$source = [];
for ($i = 0; $i < 1000000; $i++) {
	$source[] = (bool)mt_rand(0,1);
}

###### native

$t = microtime(true);

sokil

<?php

declare(strict_types=1);

namespace HttpClient;

use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;

sokil

<?php

$array = [
    'aaaa' => [
        'k1' => str_repeat('a', 1000),
    ]
];

switch ($argv[1] ?? 1) {
    default:

sokil

# delete queue
rabbitmqadmin -c ~/rabbitmq.conf delete queue name=some_queue_name

# delete queue
rabbitmqadmin -c ~/rabbitmq.conf purge queue name=some_queue_name

# show queues
rabbitmqadmin -c ~/rabbitmq.conf list queues name messages messages_ready messages_unacknowledged --sort=messages -N some_group

sokil

Show UUIDs of devices

sokil@hp:/media/sokil/GAMMA$ sudo blkid
/dev/sda1: UUID="f3f5adb7-6dd5-4fd8-8ac8-e437190aacf8" TYPE="ext4" PARTUUID="b579a75a-01"
/dev/sda2: LABEL="DATA" UUID="e7083bc0-8a54-4757-a88f-44bef551cf6f" TYPE="ext4" PARTUUID="b579a75a-02"
/dev/sdb1: LABEL="ALPHA" UUID="94895615-2b49-40a1-a582-425666956a00" TYPE="ext4" PARTUUID="00064a47-01"
/dev/sdb2: LABEL="BETA" UUID="F35B-0EBD" TYPE="vfat" PARTUUID="00064a47-02"
/dev/sdb3: LABEL="GAMMA" UUID="17239C486BA96B6B" TYPE="ntfs" PTTYPE="dos" PARTUUID="00064a47-03"

sokil

generate private

openssl genrsa -des3 -out private.pem 512

remove passphrase

openssl rsa -in private.pem -out private.pem

generate public

openssl rsa -in private.pem -outform PEM -pubout -out public.pem

sokil

• Error Code: 2013. Lost connection to MySQL server during query
• Error Code: 2006. MySQL server has gone away
• Error Code: 2003. Lost connection to backend server

Set global timeout:

mysql> SET GLOBAL wait_timeout=10;