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php-guestbook
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Message Deletion

This commit is contained in:
Dusk 2021-12-21 20:28:43 +01:00
parent 7f02744efe
commit 6b2b17b74e
2 changed files with 36 additions and 15 deletions
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20
index.php
View File

@ -3,24 +3,32 @@
require_once('persistence.php'); require_once('persistence.php');
$db = createDB(); $db = createDB();
?> ?>
<html lang="ca"> <html lang="en">
<head> <head>
<meta charset="utf-8"/> <meta charset="utf-8"/>
<title>Guestbook</title> <title>Guestbook</title>
</head> </head>
<body> <body>
<table border="1">
<?php <?php
//storeMessage($db, 'Hola Dendy'); //storeMessage($db, 'Hola Dendy');
if(deleteMessage($db, 1)) {
echo('Success');
}
else {
echo('Failure');
}
$test = getMessages($db); $test = getMessages($db);
foreach($test as $msg) { foreach($test as $msg) {
echo('<tr>'); echo('<div class="message">');
foreach($msg as $key => $value) { foreach($msg as $key => $value) {
echo("<td>$key: $value</td>"); echo('<div class="content">');
echo("$key: $value");
echo('</div>');
} }
echo('</tr>'); echo('</div>');
echo('<br/>');
} }
?> ?>
</table>
</body> </body>
</html> </html>

21
persistence.php
View File

@ -3,7 +3,6 @@
function createDB($db_name = 'guestbook.db'): SQLite3 { function createDB($db_name = 'guestbook.db'): SQLite3 {
// Can't create table if it already exists // Can't create table if it already exists
$exists = file_exists($db_name); $exists = file_exists($db_name);
$db = new SQLite3($db_name); $db = new SQLite3($db_name);
if(!$exists) { if(!$exists) {
@ -43,7 +42,6 @@ function getMessages(SQLite3 $db, array $filter = [], int $limit = 25) {
// Prepare statement // Prepare statement
$query = 'SELECT * FROM message' . $append_string; $query = 'SELECT * FROM message' . $append_string;
//var_dump($query); //var_dump($query);
$statement = $db->prepare($query); $statement = $db->prepare($query);
foreach($filter as $key => $value) { foreach($filter as $key => $value) {
@ -51,7 +49,6 @@ function getMessages(SQLite3 $db, array $filter = [], int $limit = 25) {
} }
$result = $statement->execute(); $result = $statement->execute();
$notnull = true; $notnull = true;
$ret = []; $ret = [];
while($notnull) { while($notnull) {
@ -67,7 +64,9 @@ function getMessages(SQLite3 $db, array $filter = [], int $limit = 25) {
} }
function storeMessage(SQLite3 $db, string $content, ?int $user_id = null) { function storeMessage(SQLite3 $db, string $content, ?int $user_id = null) {
$query = 'INSERT INTO message(id_user, content, date) VALUES (:id_user, :content, :date)'; $query = 'INSERT INTO message(id_user, content, date)
VALUES (:id_user, :content, :date)';
$date = (new DateTime('now'))->getTimestamp(); $date = (new DateTime('now'))->getTimestamp();
$statement = $db->prepare($query); $statement = $db->prepare($query);
$statement->bindParam(':id_user', $user_id); $statement->bindParam(':id_user', $user_id);
@ -75,3 +74,17 @@ function storeMessage(SQLite3 $db, string $content, ?int $user_id = null) {
$statement->bindParam(':date', $date); $statement->bindParam(':date', $date);
$statement->execute(); $statement->execute();
} }
function deleteMessage(SQLite3 $db, int $message_id) : int {
$query = 'DELETE FROM message
WHERE id_msg = :id_msg';
$statement = $db->prepare($query);
$statement->bindParam(':id_msg', $message_id);
$result = $statement->execute();
if ($result === false) {
return -1;
}
// Number of changed rows
return $db->changes();
}