linki\ignaczak.php

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>linki</title>

    <link rel="stylesheet" type="text/css" href="ignaczak.css">
</head>
<body>
    <?php
    $canProceed = true;
    if(empty($_GET['linkToDelete'])){$canProceed = false;}

    if($canProceed)
    {
        $conn = mysqli_connect('localhost','root','','linki');

        $linkID = $_GET['linkToDelete'];
        mysqli_query($conn, "DELETE FROM `linki` WHERE `linki`.`id` = ".$linkID."");
        echo "Usunięto link o id:".$linkID;
    }

    ?>

    <?php
    $canProceed = true;
    if(empty($_POST['addButton'])){$canProceed = false;}
    if(empty($_POST['inputText']) && $canProceed){$canProceed = false; echo "Pole tekstowe jest puste";}

    if($canProceed)
    {
        $conn = mysqli_connect('localhost','root','','linki');

        $link = $_POST['inputText'];
        mysqli_query($conn,"INSERT INTO linki(zawartosc) VALUES ('".$link."')");
        echo "Dodano link o treści:".$link;
        header('Location: ignaczak.php');
    }
    ?>

    <?php
    $conn = mysqli_connect('localhost','root','','linki');

    $q = mysqli_query($conn, 'SELECT * FROM linki');

    echo "<table border='1' width='400'>";
    while($a = mysqli_fetch_array($q))
    {
        echo "<tr><td>";
        echo "<a href='".$a['zawartosc']."'>".$a['zawartosc']."</a>";
        echo "</td><td>";
        echo "<form method='POST' action=''>";
        echo "<a href='ignaczak.php?linkToDelete=".$a['id']."'>Usuń</a><br>";
        echo "<a href='zmien.php?linkID=".$a['id']."'>Zmień</a>";
        echo "</form>";
        echo "";
    }
    echo "</table>";
    ?>
    <form method="POST" action=''>
        Wklej linka: <br>
        <input type="text" name="inputText"><br>
        <button type='submit' name='addButton' value="123">Dodaj</button>
    </form>

</body>
</html>