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 another file, let we call them hashtag.php.

The content of hashtag.php could be something like:

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

//to beautify and stylize, but not necessary BEGIN
      $title=$tag;
      include "$root/intell/header-intell.inc";      
//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
      
      $query = "SELECT * FROM [your table] WHERE [your fields with tags] LIKE '%".$tag."%';  
      $result = mysqli_query($connect, $query);  
      if(mysqli_num_rows($result) > 0)  
      {  
           while($row = mysqli_fetch_array($result))  
           {  
                echo "<h2>$row[title]</h2>
                <blockquote><p>$row[text]</p></blockquote>
                <p><i>$row[author]</i><br />";
                $keywords = $row['keywords'];
                foreach (explode(',', $keywords) as $key) {
                if(trim($row["keywords"])==''){echo "";} else{echo "<span><a href=\"hashtag.php?tag=$key\">{$key}</a></span>";}
                }
                echo "</p>";
           }  
      }  
      else  
      {  
           echo '<p>No Data Found</p>';  
      }  
 }  
 ?>  

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 $key) {
    if(trim($row["keywords"])==''){echo "";} else{echo "<span><a href=\"hashtag.php?tag=$key\">{$key}</a></span>";}
}
echo "</p>";}