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The main blog entry section is now complete. in Java Implement qr codes in Java The main blog entry section is now complete.




How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
The main blog entry section is now complete. use tomcat qr barcode generator toget qr code 2d barcode in java Intelligent Mail Showing Blog Comments To display t he comments, first create a SQL query that will get the comments for the current blog entry:. Building a Weblog echo "</p >"; $commsql = "SELECT * FROM comments WHERE blog_id = " . $validentry . " ORDER BY dateposted DESC;"; $commresult = mysql_query($commsql); $numrows_comm = mysql_num_rows($commresult);.

You count th QR Code JIS X 0510 for Java e number of rows again with mysql_num_rows() and use the value to determine if any comments have been posted. If numrows_comm is equal to 0, the text No comments is displayed; otherwise, the else block of code is executed..

$numrows_com m = mysql_num_rows($commresult); if($numrows_comm == 0) { echo "<p>No comments.</p>"; } else { $i = 1; while($commrow = mysql_fetch_assoc($commresult)) { echo "<a name="comment" . $i .

"">"; echo "<h3>Comment by " . $commrow["name"] . " on " .

date("D jS F Y g.iA", strtotime($commrow["dateposted"])) . "</h3>"; echo $commrow["comment"]; $i++; } }.

Inside the e servlet QR Code 2d barcode lse, you perform two basic functions: display each comment and then create an anchor on each one that can match up with the anchors referenced by index.php. At the top of the else block, you first set i to 1; this variable is used as a counter to implement the anchors.

Next, the while loop iterates through each comment from the query and creates the anchor. A link is created with a name attribute set to the text comment, with the value of i appended (resulting in, for example, comment2). The main comment fields are then displayed in a similar way to the main blog entry.

Finally, the i variable is incremented by 1, preparing for the next comment s output.. Build the Comment Form Allowing a u jar Denso QR Bar Code ser to add comments involves three distinct actions:. Display the form for adding comments. Process the form and add its data to the database after the user clicks the Submit button..

Practical PHP and MySQL Reload the page and show the new comment. QUICK NOTE This functio nality is a little more complex than the previous sections, largely because you need to add some code to various parts of the page, instead of just adding one line at a time to the end of your page.. First, add t QR Code JIS X 0510 for Java he main form shown in Figure 4-6.. FIGURE 4-6 Forms are useful for allowing users to contribute comments. To do this, jdk qr codes close off the PHP block at the bottom of the page with > and add the following HTML:. echo $commro w["comment"]; $i++; } }. Building a Weblog > <h3 >Leave a comment</h3> <form action="< php echo $SCRIPT_NAME . " id=" . $validentry; >" method="post"> <table> <tr> <td>Your name</td> <td><input type="text" name="name"></td> </tr> <tr> <td>Comments</td> <td><textarea name="comment" rows="10" cols="50"></textarea></td> </tr> <tr> <td></td> <td><input type="submit" name="submit" value="Add comment"></td> </tr> </table> </form>.

This code cr awt qr codes eates a table that contains a number of form elements. In the tag, action specifies the page that will process the data from this form. As shown here, you can use a special PHP variable called SCRIPT_NAME to reference the name of the current file (in this case, viewentry.

php). This reference is useful if you later decide to change the filename of your script; you then don t need to change your code. The method attribute in the tag indicates whether you want to submit your variables as POST or GET variables.

Inside the action attribute, the validentry variable is added as a GET variable. When you process the data from the form, you need to indicate the ID of the blog entry to which you are posting the comment. The HTML in the preceding form itself is pretty self-explanatory.

. <form> NOTE GET Variable s Versus Hidden Form Fields Another technique of sharing a variable between the form and the script that processes it is to use the hidden form element:. <input type="hidden" name="example" value="21"> The value at tribute of the form can then be accessed as a normal variable with _GET or _POST in your PHP code..
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