I can not alter on Yii2 syntax:
header("Refresh: 60; url={$_SERVER['REQUEST_URI']}");
The code below does not work:
$headers = Yii::$app->response->headers;
$headers->set("Refresh: 60", "url={$_SERVER['REQUEST_URI']}");
Header name is Refresh, the rest is the value. So you should use:
$headers->set("Refresh", "60; url={$_SERVER['REQUEST_URI']}");
Related
I want to send a newsletter through email and I would like to see who opened my email.
I send HTML in the content of the email, so I can not add javascript in there. (see here )
Is there any way to send a post request (to my server) only through HTML, every time the HTML is opened and not by pressing a button?
No.
The only HTTP requests that can be triggered by simply opening an HTML document without any JS in it are GET requests.
Tracking of HTML emails is usually achieved using GET requests from images (and usually blocked by email clients because it is intrusive).
I think you are wanting to track emails which are opened? If you are using a PHP server you can create a simple "pixel" but would need to hook it up to your database.
Inside your email you can load the pixel as an image and replace the %pixel_id%
<img src="https://yoururl/pixel.php?tid=%pixel_id%" style="width:1px;height:1px;" title="pixel">
Pixel code:
<?php
//YOU NEED TO INCLUDE YOUR DATABASE CONNECTION FILE HERE
$conn_cms=get_dbc();
$stmt = $conn_cms->prepare("SELECT * FROM `pixel_tracker` WHERE `pixel_id` = ?");
$stmt->bind_param("s", $tid);
$tid = $_GET['tid'];
$stmt->execute();
$result = $stmt->get_result();
$assoc = $result->fetch_assoc();// get the mysqli result
$stmt = $conn_cms->prepare("UPDATE `pixel_tracker` SET `seen` = ?,`seen_count` = ?,
`seen_when`= ?, `header_track`= ? WHERE `pixel_id` = ?");
$stmt->bind_param("sssss", $seen, $seen_count, $seen_when, $header_track, $pixel_id);
$seen = 1;
$seen_count = $assoc['seen_count']+1;
$seen_when = date("Y-m-d H:i:s");
if(isset($_SERVER['HTTP_REFERER'])){
$header_track = $_SERVER['HTTP_REFERER'];
} else {
$header_track = "none";
}
$pixel_id = $tid;
$stmt->execute();
$result = $stmt->get_result(); // get the mysqli result
$pixel = imagecreate(1,1);
$color = imagecolorallocate($pixel,255,255,255);
imagesetpixel($pixel,1,1,$color);
header("content-type:image/jpg");
imagejpeg($pixel);
imagedestroy($pixel);
?>
EDIT: If you are sending emails automatically from your server you can dynamically insert the pixel reference in to your database, otherwise for now you can do this manually.
i have a problem i need to delete from cache table specific rows. I have like 3 rows to delete by one submit.
cache_73_content
cache_73_work
cache_73_header
I tried like this :
$cache_delete = sprintf('cache_%s', $form_state['values']['node_tid']) . '%';
db_delete('cache')
->condition('cid', $cache_delete)
->execute();
But didn't work. Please need your help
It would make more sense to use the API:
$cache_delete = sprintf('cache_%s', $form_state['values']['node_tid']);
cache_clear_all($cache_delete, 'cache', TRUE);
If you must use the database directly:
$cache_delete = sprintf('cache_%s', $form_state['values']['node_tid']) . '%';
db_delete('cache')
->condition('cid', $cache_delete, 'LIKE')
->execute();
I have a table with a column named balance.
if(mysqli_num_rows($get_bank_check_res) > 0){
$display_block = "<p>your autho code is:</p>";
$account_check = mysql_fetch_array($get_bank_check_res);
$balance= $account_check > $grand_total_safe ? (balance - $grand_total_safe) : 0;
$display_block .= "<p>your balance is: '".$balance."' </p>";
I received the warning : Undefined variable balance. Trying mysql_fetch_assoc() didn't work either.
You get a row back with mysql_fetch_array, it doesn't automagically create new variables for you. Ie your column is located here. Also, since you are using the MySQLi extension instead of mysql, it look like this:
$row = $get_bank_check_res->fetch_assoc();
$balance = $row["balance"];
then you can do you whatever math your doing using the values found inside your $row array.
Can anyone tell me why this isn't working? Everything comes up fine but when I hit submit it doesn't update the database.
$row = mysql_fetch_array($sql);
$title = $row['title'];
$content = $row['content'];
$author = $row['author'];
$author_email = $row['author_email'];
$cat = $row['category'];
$date = $row['date'];
$id = $row['id'];
$form = "<tr><td>$id
<form action='edit.php' method='post'>
<input type='text' value='$title' name='title'><br>
<textarea name='content'>$content</textarea><br>
<input type='submit' name='submit'>
</td></tr>";
$ptitle = htmlentities($_POST['title']);
$pcontent = htmlentities($_POST['content']);
if($_POST['submit']){
if ($ptitle && $pcontent){
mysql_query("UPDATE blogdata SET id='$id', title='$ptitle', author='$author', author_email='$author_email', date='$date', category='$category', content='$pcontent' WHERE id='$id'");
}
else
echo "A forms empty.";
}
else
echo "$form";
Note first that you should not be using the values that have been submitted directly from the form without first validating them. I will not address that here, but I will address your query:
You cannot set the value of the row identifier that you plan to use in your WHERE clause; this causes a concurrency problem. Your row identifier should be immutable.
Thus, your query should look like this (reminder: I have not fixed the security related issues):
UPDATE blogdata SET title='$ptitle', author='$author',
author_email='$author_email', date='$date', category='$category',
content='$pcontent' WHERE id='$id'
Because its badly written code with bugs in it?
You should use htmlentities to escape content you are writing to the browser. You should use mysql_real_escape_string to escape content you are writing to the database. Your code should have comments in it explaining what it does. You should check the return value for mysql_query and poll mysql_error when appropriate. You shouldn't quote numeric values in your SQL.
This code
$html->link(" »", '/events/view/'.$event['Event']['id']), array('escape'=>false,'class'=>'more') )
Outputs
»
instead of >>
Any idea?
basically you have syntax error instead you should have:
$this->Html->link(" »", '/events/view/'.$event['Event']['id'], array('escape'=>false,'class'=>'more') );
At least that's what I see.