svg rounded corner and shadow

shadow (like css shadow-box)

At least with Firefox you can use a filter, like the following:

.shadow{filter: drop-shadow(8px 6px 6px gray);}

rounded corner

The simplest way to round the corners of a box is to

  • use rect element with rx and ry attributes (such as rx="20" ry="20")
  • and define the style of rect with stroke-linejoin:round; and something like stroke:[your color]; stroke-width:[the width you like];

You can see the following example

box rounded

php/msql keywords as hashtags

php separate all items in a mysql field

You can use the explode syntax, as in the following exapmple:

$keywords = $row['keywords'];
foreach (explode(',', $keywords) as $key) {
    echo "<span><a href="\hashtag.php?tag=$key\">{$key}</a></span>";

In the example we have a mysql field (keywords) with many items comma separated (such as : “truth, soul, body, mind” and so on).

And we obtain to have as many links from each item toward a specific target, as they are (that is: 3 links if you have 3 items, 7 links fi you have 7 ones).

In this way you can get a system of hashtags for your database keywords.

other steps

You need of two files, let we call them hashtag.php and hashtag-index.php.

The content of hashtag.php could be something like:

      $tag = preg_replace('/(?<!\S)#([0-9a-zA-Z]+)/', '', $_GET["tag"]);

//to beautify and stylize, but not necessary BEGIN
      include "$root/intell/";      
//to beautify and stylize, but not necessary END      

      $connect = mysqli_connect("localhost", "[mysql user]", "[mysql password]", "[mysql database]");  
      mysqli_set_charset($connect, 'utf8mb4');  // procedural style
      $query = "SELECT * FROM [your table] WHERE [your fileds with tags] LIKE '%".$tag."%';  
      $result = mysqli_query($connect, $query);  
      if(mysqli_num_rows($result) > 0)  
           while($row = mysqli_fetch_array($result))  
                echo "<h2>$row[title]</h2>
                <p><i>$row[author]</i><br />";
                $keywords = $row['keywords'];
                foreach (explode(',', $keywords) as $key) {
                echo "<span><a href=\"hashtag.php?tag=$key\">{$key}</a></span>";
                echo "</p>";
           echo '<p>No Data Found</p>';  

the conte of hashtag-index.php should be something like:

define('DB_HOST', 'localhost');
define('DB_NAME', '[your database');
define('DB_CHARSET', 'utf8');
define('DB_USER', '[your mysql user]');
define('DB_PASSWORD', '[your mysql password]');

try {
  $pdo = new PDO(
    "mysql:host=" . DB_HOST . ";charset=" . DB_CHARSET . ";dbname=" . DB_NAME,
} catch (Exception $ex) {

// (3) SEARCH
$stmt = $pdo->prepare("SELECT * FROM `[mysql table name]` WHERE `keywords` LIKE ?");
$stmt->execute(["%" . $_POST['search'] . "%", "%" . $_POST['search'] . "%", "%" . $_POST['search'] . "%"]);
$results = $stmt->fetchAll();
if (isset($_POST['ajax'])) { echo json_encode($results); }

afterwards obviously you could adjust the css according to your needs.

Of course you can have as many other php files as you want, where you usually store you database content, in which you can add the kewwords as hashtags, with a code like the following:

echo "</p><p class=\"keywords\">";
$keywords = $row['keywords'];
foreach (explode(',', $keywords) as $key) {
    echo "<span><a href=\"hashtag.php?tag=$key\">{$key}</a></span>";
echo "</p>";}

LibreBase problems with native mysql connector

1. mysql connector not working

From LO 6.4 native mysql connector didn’t work any more. But a possible solution is to comment the line skip-networking in my.conf.

I mean now the line is #skip-networking, before it was skip-networking.

2. subforms not working

In new releases, to avoid this issue, you have to cut a small portion of code in content.xml, as in the following instructions:

have a look at the content.xml in the *.odb-file (could be opened by a zip-program)

Not working code:
<db:driver-settings db:system-driver-settings=”” db:base-dn=”” db:parameter-name-substitution=”false”/>

Working code
<db:driver-settings db:system-driver-settings=”” db:base-dn=””/> »

It works!

3. tables or queries not working

You should check the table/query structure and avoid fields (which should have a length) with no length.

regex replace keeping a part of a string

Today I managed to replace (in html file links and anchors) absolute paths with relative ones.

I needed to keep the anchors and links number.

I did so:

search: href="#_ftn([0-9])">
replace: href="#_ftnref\1" id="_ftn\1">

In this way href=”#_ftn1 was replaced by  href="#_ftnref1" id="_ftn1", href=”#_ftn2 was replaced by  href="#_ftnref2" id="_ftn2", and so on.

For numbers with two digits

replacehref="#_ftnref\1" id="_ftn\1">

Only the search string is to be modified, if you have more digits (f.e. [0-9][0-9][0-9][0-9] if you have numbers with four digits, such as 1276), not the replace one (so don’t write \1\1

svg with external image embedded

All browsers have this limitation: they not allow to show an svg with an external image embedded, such as

<image x="2" y="2" width="somewidth" height="someheight" xlink:href="myimage.jpg">

even though the image is in local.

For security reasons.