web-site-public-php/sys/increment.php

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2024-05-04 19:04:02 +00:00
<?php
require_once $_SERVER["DOCUMENT_ROOT"]."/sys/widget.php";
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
class Increment {
private $mysqli;
private string $page;
function __construct($page) {
$this->mysqli = new mysqli("localhost", "increment", apache_getenv("INCREMENT_PASS"), "www_increment");
$this->mysqli->set_charset("utf8mb4");
$this->page = $page->url;
}
function get_count() : int {
$query = $this->mysqli->prepare("SELECT count FROM increments WHERE page=?");
$query->bind_param('s', $this->page);
$query->execute();
$result = $query->get_result();
if ($result->num_rows >= 1) {
$row = $result->fetch_assoc();
return intval($row['count']);
} else {
$query = $this->mysqli->prepare("INSERT INTO increments (page,count) VALUES (?,0)");
$query->bind_param('s', $this->page);
$query->execute();
return 0;
}
}
function increment() {
$query = $this->mysqli->prepare("UPDATE increments SET count=count+1 WHERE page=?");
$query->bind_param('s', $this->page);
$query->execute();
}
function handle_increment() {
if ($_SERVER['REQUEST_METHOD'] == "POST") {
if (isset($_POST['increment'])) {
$this->get_count();
$this->increment();
}
}
}
}
class IncrementButton implements Widget {
private int $_count;
function __construct() {
$this->_count = 0;
}
static function new() {
return new IncrementButton();
}
function count($count) {
$this->_count = $count;
return $this;
}
public function html() : string {
$increments = strval($this->_count) . " increment";
if ($this->_count != 1)
$increments .= "s";
return <<<EOF
<form class="no-style-form" method="post">
<input type="hidden" name="increment" value="true" />
<button type="submit" title="Increment (like) this page">
<img class="icon" role="presentation" src="/assets/hicolor/up.png" />
<span>$increments</span>
</button>
</form>
EOF;
}
}
?>