lt

function uuid4(): string
{
    return bin2hex(
        // 18 bytes encodes to 36 bytes. 32 for UUID + 4 for hyphens.
        // Bitwise AND to mask where static bits will be set
        // Mask and set UUID specific bits
        // In 00112233-4455-m677-n899-aabbccddeeff, m (4 bits) = version (4), n (2 bits) = variant (2)
        //                             00  11  22  33  -4  45  5-  m6  77  -n  89  9-  aa  bb  cc  dd  ee  ff
            (random_bytes(18) & "\xff\xff\xff\xff\x0f\xff\xf0\x0f\xff\x03\xff\xf0\xff\xff\xff\xff\xff\xff") |

lt

<?php declare(strict_types=1);

$socket = socket_create(AF_INET, SOCK_RAW, SOL_TCP);

if (!$socket) {
    $errorCode = socket_last_error();
    throw new \RuntimeException(socket_strerror($errorCode), $errorCode);
}

const IP_HDR = 'Cversion_ihl/Ctos/ntot_len/nid/nfrag_off/Cttl/Cprotocol/ncheck/Nsaddr/Ndaddr/';

lt

<?php

function deep_copy_and_validate_object($source, $destination)
{
    $reflectionClass = new \ReflectionClass($destination);
    foreach ($reflectionClass->getProperties() as $reflectionProperty) {
        $propertyName = $reflectionProperty->getName();
        if (property_exists($source, $propertyName)) {
            $propertyValue = $source->$propertyName;

lt

Keybase proof

I hereby claim:

• I am lt on github.
• I am lt (https://keybase.io/lt) on keybase.
• I have a public key whose fingerprint is 6A4D B222 AA19 7E6E 63D0 4DF4 493D B208 C886 9F3B

To claim this, I am signing this object:

lt

<?php

/**
 * Directed acyclic graph based dependency resolver.
 *
 * Class DependencyResolver
 */
class DependencyResolver {
    /**
     * Internal map of outgoing edges for each node.

lt

Repeating patterns, matches 0-255 in each octet, followed by /0-32

\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/(3[0-2]|[1-2]?[0-9])\b

Using subpatterns to achieve the same thing.

\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(?1)\.(?1)\.(?1)/(3[0-2]|[1-2]?[0-9])\b

lt

#!/bin/sh

for file in $(find static -type f ! -name *.gz); do
    if [ ! -e $file.gz ] || [ $file -nt $file.gz ]; then
        gzip -9 -n -c -v $file > $file.gz
        touch $file.gz -r $file
    fi
done