Highlighting Code on page - new feature for CI4 blog project

User authentication is very common in modern web application. It is a security mechanism that is used to restrict unauthorized access to member-only areas and tools on a site.

In this tutorial we'll create a simple registration and login system using the PHP and MySQL. This tutorial is comprised of two parts: in the first part we'll create a user registration form, and in the second part we'll create a login form, as well as a welcome page and a logout script.

Example of HTML Markup

<textarea name="text_editor" id="text_editor" ></textarea>
<script>
CKEDITOR.replace( 'text_editor', {                  
toolbar:[['Source','Table','codesnippet']],
height:['350px']
});
</script>

Example of PHP code

<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
  $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
  if($check !== false) {
    echo "File is an image - " . $check["mime"] . ".";
    $uploadOk = 1;
  } else {
    echo "File is not an image.";
    $uploadOk = 0;
  }
}
?>

Example od python code:

import requests
dfile = open("datafile.txt", "rb")
url = "http://httpbin.org/post"
test_res = requests.post(url, files = {"form_field_name": dfile})
if test_res.ok:
    print(" File uploaded successfully ! ")
    print(test_res.text)
else:
    print(" Please Upload again ! ")