如何再次在PHP和PHP中用HTML编写HTML？

Question

How to write HTML in PHP and PHP in HTML again?

The following error message appears:

Parse error: syntax error

<?php 
    echo"<div class='vod'>    

         "   /////// i need right php her
          $con = mysqli_connect ("localhost","root","","demo");

        $id = @addcslashes ($_REQUEST['id']);

        $image = mysqli_query ($con,"SELECT * FROM img WHERE id= '$id '")or  die(mysqli_error($con));
        $image = mysqli_fetch_assoc ($image);
        $image = $image['img'];


        header ("content-type: image/jpeg");
        echo $image ; "

    </div>";
?>

Answer 1

Its a simple typo I am afraid. You just missed a ; after the first echo and missed the echo command on the last line that outputs the last div

While developing a script it is a good idea to make sure you have error reporting turned on.

<?php 
    // turn on error reporting while developing a script
    ini_set('display_errors', 1); 
    ini_set('log_errors',1); 
    error_reporting(E_ALL); 
    mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);

    echo"<div class='vod'>";
    // missing semi colon  ^

    $con = mysqli_connect ("localhost","root","","demo");
    $id = @addcslashes ($_REQUEST['id']);

    $image = mysqli_query($con,"SELECT * FROM img WHERE id= '$id'")
            or die(mysqli_error($con)); 
    $image = mysqli_fetch_assoc ($image); 
    $image = $image['img'];

    header ("content-type: image/jpeg"); 
    echo $image;

    echo "</div>";
//  ^^^^ the echo here was also missing
?>

Note: You should also use prepared parameterised queries to protect your scripts from SQL Injection Attacks