69 -> 70
This commit is contained in:
kankys
278
zaklady/odkladiste.php
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278
zaklady/odkladiste.php
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@ -0,0 +1,278 @@
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<?php
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// Přepisování proměnných (statické a dynamické typování)
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$name = "Lukáš";
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$adult = true;
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echo $name;
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echo "<br>";
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// Pravda, nepravda = true, false
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$kolej = false;
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$adult = false;
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$is_logged = true;
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$database_connection = false;
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echo "Přihlášení uživatele: $is_logged";
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echo "<br>";
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echo "Napojení do databáze: $database_connection";
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// Null
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$kolej = null;
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echo $kolej;
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$kolej = "Nebelvír";
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echo $kolej;
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// Matematické operace
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$students_2022 = 100;
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$students_2023 = 124;
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$results = $students_2022 - $students_2023 * 5;
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$results2 = $students_2022 + $students_2023;
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$results3 = $students_2022 * $students_2023 ;
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$results4 = $students_2022 / $students_2023;
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echo "Výsledek: $results";
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echo "<br>";
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echo "Výsledek: $results2";
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echo "<br>";
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echo "Výsledek: $results3";
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echo "<br>";
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echo "Výsledek: $results4";
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// Spojování proměnných
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$first_name = "Harry";
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$second_name = "Potter";
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$friend_first_name = "Ron";
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echo $first_name . " " . $second_name;
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echo "<br>";
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echo $first_name. " a " .$friend_first_name;
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// Type conversion
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$year_price = "1500";
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$year_caunt = "7";
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$results_price = $year_price * $year_caunt;
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echo $results_price;
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echo "<br>";
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var_dump($results_price);
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echo "<br>";
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var_dump($year_caunt);
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// Negace
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$database_connection1 = true;
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var_dump(!$database_connection1);
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// Pole (array)
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$students = ["Harry", "Ron", "Hermiona"];
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$students2 = [1 => "Harry", 65 => "Ron", "Hermiona"];
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echo $students[1];
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echo "<br>";
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var_dump($students);
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echo "<br>";
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var_dump($students2);
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// Asociatvní pole
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$students3 = [
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"first_name" => "Harry",
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"second_name" => "Potter",
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"college" => "Nebelvír",
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"age" => 15
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];
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echo $students3["second_name"];
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// Dvoudimenzionální pole (pole v poli)
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$students4 = [
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[
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"first_name" => "Harry",
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"second_name" => "Potter",
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"age" => 15
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],
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["first_name" => "Hermiona",
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"second_name" => "Grangerová",
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"age" => 14
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],
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["first_name" => "Ron",
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"second_name" => "Weasly",
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"age" => 15],
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];
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var_dump($students4);
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echo "<br>";
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echo $students4[0]["first_name"];
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echo "<br>";
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echo $students4[2]["second_name"];
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// Foreach cyklus
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$students5 = ["Harry", "Ron", "Hermiona", "Malfoy"];
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foreach ($students5 as $index => $one_student5) {
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$index++;
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echo $index.". " . $one_student5;
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echo "<br>";
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// Foreach cyklus
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$students6 = [
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"jmeno" => "Harry",
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"prijmeni" => "Potter",
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"kolej" => "Nebelvír",
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"vek" => 15
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];
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foreach ($students6 as $index1 => $one_information) {
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echo $index1.": ".$one_information;
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echo "<br>";
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}
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}
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// Cyklus foreach - na práci s polem
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// Cyklus for
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for ($i = 1; $i <= 30; $i++) {
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echo $i. " .Harry";
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echo '<br>';
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}
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// Cyklus foreach - na práci s polem
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// Cyklus for - kolikrát se má cyklus provést
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for($y = 1; $y <= 5; $y++) {
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echo "<a href='./stranky/stranka$y.php'>Další stránka</a>";
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echo "<br>";
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};
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// Cyklus foreach - na práci s polem
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// Cyklus for - kolikrát se má cyklus provést
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// Cyklus while - while cyklus znamená dokud - nevíme kolikrát (provádí se dokud platí podmínka)
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$month = 1;
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while ($month <=12){
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echo $month;
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echo "<br>";
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$month = $month + 1;
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}
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$test_questions = ["1. otázka", "2. otázka", "3. otázka", "4. otázka", "5. otázka"];
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$maximum = 2;
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$counter = 0;
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while($counter < $maximum) {
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echo $test_questions[$counter];
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echo "<br>";
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$counter++;
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};
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// Podmínky
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if (5 > 20) {
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echo "Ano, je to pravda";
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} else {
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echo "Není to pravda";
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};
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//Podmínky a empty
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$articles = [];
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var_dump(empty($articles));
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echo "<br>";
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if (empty($articles)) {
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echo "Neexistují žádné články";
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exit();
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}
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// VYpsání článků z databáze
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echo "<br>";
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echo 'Další kód na stránce';
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// Podmínky a elseif
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$hour =15;
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$message = null;
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if($hour< 9) {
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$message = "Dobré ráno";
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} elseif ($hour < 12) {
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$message = "Dobré dopoledne";
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} elseif ($hour == 12) {
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$message = "Dobré poledne";
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} elseif ($hour < 18) {
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$message = "Dobré odpoledne";
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} else {
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$message = "Dobrý večer";
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}
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echo $message;
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// Podmínky a logické operátory - and, or
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$age = 25;
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if($age >= 18 and $age < 65) {
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echo "Dospělí není v důchodovém věku";
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} elseif ($age < 18){
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echo "Dospívající";
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} else {
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echo "Důchodce";
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}
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/*
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and - a zároveň
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true, true -> true
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true, false -> false
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false, true -> false
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false, false -> false
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*/
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// Podmínky a logické operátory - and, or
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// 12345, 66778
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$password = "12345";
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if($password === "12345" or $password === "66778") {
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echo "Dveře se otvírají, můžete jít dál";
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} else {
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echo "Neplatný kód. Zkuste to prosím znovu";
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}
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// or - nebo
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// true, true -> true
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// true, false -> true
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// false, true -> true
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// false, false -> false
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// Switch statement
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$day = "po";
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switch ($day) {
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case "po":
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echo "Pondělí";
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break;
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case "ut":
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echo "Úterý";
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break;
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case "st":
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echo "Středa";
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break;
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case "ct":
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echo "Čtvrtek";
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break;
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case "pa":
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echo "Pátek";
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break;
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case "so":
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echo "Sobota";
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break;
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case "ne":
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echo "Neděle";
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break;
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default:
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echo "Neznámý den";
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break;
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}
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