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user49981

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  • Как правильно разбить одну сроку опираясь на другую?

    @user49981 
    $str1 = 'Lorem {val1} dolor sit {val2}, consectetur adipisicing {val3}';
        $str2 = 'Lorem ipsum dolor sit amet, consectetur adipisicing elit';

        $words1 = explode(' ', $str1);
        $words2 = explode(' ', $str2);

        $items = count($words1);
        $result = [];

        for($i = 0; $i< $items; $i++) {
            if(preg_match('/{\w*}/', $words1[$i])) {
                $result["$words1[$i]"] = $words2[$i];
            }
        }

        print_r($result);
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  • Какой валидатор использовать?

    @user49981
    https://symfony.com/doc/current/components/validat...
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  • Как сгенерировать миграции по сущности вне src/Entity?

    @user49981
    в doctrine.yml
    doctrine:
    	orm:
            mappings:
                	dir: '%kernel.project_dir%/src/Models/User/Entity'
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  • Какой ЯП учить?

    @user49981
    C++, очевидно
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  • Как переделать массив с объектами?

    @user49981
    Array.prototype.filter()
    https://developer.mozilla.org/ru/docs/Web/JavaScri...
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  • Поиск по массиву и возвращение ключей найденных элементов?

    @user49981
    array_column($array, 'name_g', 'w_id');
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  • Как убрать повторное добавление записи в БД при обновлении страницы?

    @user49981 
    function add_comment ($connect) {
    if(formSubmit('form_commentaries') 
         && formValid(['name', 'text'], [VALIDATE_NAME, VALIDATE_TEXT])) {
        $name = $_POST['name'];
        $text = $_POST['text'];
        $sql = "INSERT INTO comments (`name`, `text`) VALUES ('$name', '$text')";
        $result = mysqli_query($connect, $sql);
        return $result;
    }
}

function formSubmit(string $formName)
{
    if (array_key_exists($formName, $_POST)) {
        return true;
    }
    return false;
}

// define('VALIDATE_NAME', '/^(\w{3,12})$/');
// define('VALIDATE_TEXT', ?);
function formValid(array $fields, array $filters)
{
    for ($i = 0; $i < count($filters); $i++) {
        if(!preg_match($filters[$i], filter_input_array(INPUT_POST)[$fields[$i]])) {
            return false;
        };
    }
    return true;
}
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  • Как убрать из коммита лишние файлы?

    @user49981
    git rm -r --cached file1 file2 file3
    git commit -m 'remove files from git'
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  • Почему при наследовании класса не могу увидеть переменную, хотя она с модификатором protected?

    @user49981 
    нельзя испоьзовать 3.14 как переменную
class SubMath extends Math{
    3.14 // выдает ошибку
}

class Math{
       protected static final double PI = 3.14;       
}

class SubMath extends Math {
    public static double pi() {
        return Math.PI; // 3.14
    }
}
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  • PHP, регистрация, проверка полей?

    @user49981
    login.html
    <form action="login.php" method="post">
    <input type="text" name="login" id="login"/>
    <input type="password" name="password"/>
    <input type="text" name="form_login" hidden readonly/>
    <input type="submit">
</form>


    login.php
    <?php

include 'validation.php';
include 'database.php';
include 'functions.php';

if (formSubmit('form_login')) {
    if (formValid(['login', 'password'], [VALIDATE_LOGIN, VALIDATE_PASSWORD])) {
        if(isUserExist('login', 'password')) {
            echo "hi";
        }
    }
}


    functions.php
    <?php
function formSubmit(string $formName)
{
    if (array_key_exists($formName, $_POST)) {
        return true;
    }
    return false;
}

function formValid(array $fields, array $filters)
{
    for ($i = 0; $i < count($filters); $i++) {
        if(!preg_match($filters[$i], filter_input_array(INPUT_POST)[$fields[$i]])) {
            return false;
        };
    }
    return true;
}

function isUserExist($loginPostField, $passwordPostFiled, $allowDisabled = true) {
    $login = filter_input_array(INPUT_POST)[$loginPostField];
    $password = filter_input_array(INPUT_POST)[$passwordPostFiled];
    if(userExistInDatabase($login, $password)) {
        return true;
    }
    return false;
}

function userExistInDatabase($login, $password)
{
    $mysqli = new \mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
    if ($mysqli->connect_errno) {
        echo 'error:' . __METHOD__ . " : " . __LINE__; die;
    }
    $sql = "SELECT id FROM users WHERE login = $login AND password = " . password_hash($password, PASSWORD_BCRYPT);
    if (!$result = $mysqli->query($sql)) {
        echo 'error:' . __METHOD__ . " : " . __LINE__; die;
    }
    if ($result->num_rows === 1) {
        return true;
    }
    return false;
}


    database.php
    <?php
define('DB_HOST', '...');
// ...


    validation.php
    <?php
define('VALIDATE_LOGIN', '/^(\w{3,12})$/');
// ...
    Ответ написан
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  • Как составить регулярку?

    @user49981 
    preg_replace('/((<span[^>]{0,}>)|(<\/span>))/', "", $html);
    Ответ написан
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  • Возможно ли перебрать этот json и вывести?

    @user49981 
    $json = '{"109238": [], "t13": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceb0f8.jpg"], "t14": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cec0b4.jpg"], "t16": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cee086.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cee4c9.jpg"], "t19": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf079c.jpg"], "t21": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf2ae5.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf2fa0.jpg"], "t28": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d035a9.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d03a6c.jpg"], "t37": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d04c41.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d05156.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d05647.jpg"], "t39": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d05ac3.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d05ff0.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d06512.jpg"], "t46": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d06830.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d06e15.jpg"], "t49": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0716b.jpg"], "t57": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0774d.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d07db3.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0840f.jpg"], "t62": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d08782.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d08e73.jpg"], "t66": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d092ec.jpg"], "t69": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d09849.jpg"], "t71": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d09e24.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0a49a.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0aa6a.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0afc1.jpg"], "t72": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0b351.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0b902.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0be92.jpg"], "t82": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0c263.jpg"], "t87": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0c6c0.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0cc4a.jpg"], "t99": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0ced7.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0d3a2.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0d8b9.jpg"], "t100": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce754d.jpg"], "t107": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce7c8d.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce812b.jpg"], "t109": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce84b6.jpg"], "t121": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce8a16.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce8ee5.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce93ac.jpg"], "t123": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce96b5.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ce9b3f.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cea00e.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cea509.jpg"], "t127": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cea956.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceadb3.jpg"], "t135": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceb5b2.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceba37.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cebe85.jpg"], "t140": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cec4f7.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cec97f.jpg"], "t148": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cecdaa.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ced512.jpg"], "t158": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ced8be.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cedd88.jpg"], "t166": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cee774.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceec06.jpg"], "t172": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceeece.jpg"], "t173": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cef2c8.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cef76e.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cefc14.jpg"], "t182": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8ceffc4.jpg"], "t189": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf03a4.jpg"], "t196": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf0b44.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf0fce.jpg"], "t201": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf13ad.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf1851.jpg"], "t202": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf1c8d.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf217b.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf26b0.jpg"], "t213": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf32d7.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf379b.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf3c66.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8cf416e.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0043e.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0095a.jpg"], "t240": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d00cdd.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d011a5.jpg"], "t257": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d01602.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d01ad3.jpg"], "t268": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d01eac.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d02349.jpg"], "t272": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d02765.jpg"], "t273": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d02bff.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d030d2.jpg"], "t284": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d03e7c.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d0433b.jpg", "https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d04812.jpg"], "t2-5": ["https://gdz-ru.com/attachments/images/tasks/000/109/238/0002/5c373b8d20a76.jpg"]}';
$array = json_decode($json);
$links = [];

foreach ($array as $key => $ls) {
    foreach($ls as $link) {
        $links[] = "<a href={$link}>{$key}</a>";
    }
}

print_r($links);
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  • Как сложить данные в массиве о одинаковым датам?

    @user49981 
    $data = [];

    $data["datetime"] = [
      "19.07.2019",
      "19.07.2019",
      "20.07.2019",
    ];
    $data["quantity"] = [
       "3",
       "1",
       "5"
    ];
    
    $resultArray = [];
    foreach($data["datetime"] as $key => $value) {
        if(array_key_exists($data["datetime"][$key], $resultArray)) {
            $resultArray[$data["datetime"][$key]] = $resultArray[$data["datetime"][$key]] + $data["quantity"][$key];
        } else {
            $resultArray[$data["datetime"][$key]] = $data["quantity"][$key];    
        }
        
    }

    print_r($resultArray);
    Ответ написан
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  • Фреймворк для команды с нулевым опытом в ООП?

    @user49981
    https://github.com/symfony/skeleton
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  • Регулярные выражения, почему не работает (.*) - ноль или более символов?

    @user49981 
    $str = '
<p>без атрибутов</p>
<p align="justify" style="color:red;" class="c1">с атрибутами</p>';

$res = preg_replace('/<p ([^>]{0,}[\s]{0,})>/msU', "<p>", $str);
echo $res;
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  • Как измерить скорость php-функции?

    @user49981
    Допустим, есть некоторый массив из 10 элементов и две функции, for и foreach, очевидно
    O(n)
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  • Что кому принадлежит из этих объектов?

    @user49981 
    $airplane = new Airplane();
$airplane->fly();

class Airplayne
{
    public function __construct(EngineInterface $engine) {}
    
    public function fly()
    {
        $this->engine->enable();
    }
    
    public function addPilots() {}
}
    Ответ написан
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  • Как умножить div на число в input и вывести?

  • Как получить элементы html по классу?

    @user49981 
    divs = document.getElementsByClassName('div');
for(let i = 0; i < divs.length; i++) {
	alert(divs[i].innerText);
}
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  • Как в многомерном массиве применить для каждого его значения функцию trim, то бишь убрать в начале и конце пробелы?

    @user49981 
    $array = [[" abc "], [" efg ", [ " klm ", [" omp "]]]];
    $resultArray = [];
    foreach (new \RecursiveIteratorIterator(new \RecursiveArrayIterator($array)) as $item) {
        $resultArray[] = trim($item);
    }
    print_r($resultArray);
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