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This is a simple example to develop your own Python web server used for application development or testing Python script and should not be used on a public network . It works similar to the Apache web server with limited functionalities and not intended to be a full-featured web server. This tutorial demonstrates just to activate the built-in web server through a batch file. Instructions For developing a Python web server, we simply need Python software alone. The batch file (.bat) was created to activate the built-in web server, automatically open the default web browser with custom folder as root directory (www), and minimize the command line window while running the Python script. Step 1: Download and install Python software according to your system platform. I have downloaded Windows x86-64 executable installer for 64-bit Windows 10 operating system. Step 2: Create a new folder named www ( optional , your path to the webpages). Also, create a new file index.html in...

This is a simple example to design your own PHP web server used for application development or testing PHP script and should not be used on a public network . It works similar to the Apache web server with limited functionalities and not intended to be a full-featured web server. This tutorial demonstrates just to activate the built-in web server through a batch file. Instructions For designing a PHP web server, we simply need PHP software alone. The batch file(.bat) was created to activate the built-in web server, automatically open the default web browser with custom folder as root directory (www), and minimize the command line window while running the PHP script. Step 1: Download and extract compresed file (.zip) formatted PHP software according to your system platform. I have downloaded VC14 x64 Thread Safe (2017-Sep-26 23:04:10) for 64-bit Windows 10 OS. Step 2: Create a new folder www in the extracted folder. Also, create a new file index.html in the www folder ...

A frequency plot is a graphical data analysis technique for summarizing the distributional information of a variable. The response variable is divided into equal sized intervals (or bins). The number of occurrences of the response variable is calculated for each bin. In this tutorial, the number of occurrences of each amino acids in the protein sequence (response variable) is calculated and sorted in ascending order. The frequency plot then consists of: Vertical Axis = Amino acids Horizontal Axis = Frequencies of the amino acids There are 4 types of frequency plots: Frequency plot (absolute counts); Relative frequency plot (convert counts to proportions); Cumulative frequency plot; Cumulative relative frequency plot. The frequency plot and the histogram have the same information except the frequency plot has lines connecting the frequency values, whereas the histogram has bars at the frequency values. Frequency plot using PHP and R In this tutorial, the programming langu...

This is a simple tutorial which explains how to design your own web interface for NCBI BLAST+ to perform local and online database search using PHP in webserver. The PHP library loc BLAST executes the NCBI BLAST+ programs using exec() function through passing parameters from the HTML form fields. In loc BLAST , two list boxes were used to select program & database, and text area & file upload is used to input query sequence in the FASTA file format. A FASTA file validation function is included to validate the query sequence before executing the BLAST programs. The loc BLAST PHP library and test database files were freely available at GitHub . Requirements for loc BLAST Setup In this tutorial, I have given a brief explanation about embedding the latest NCBI BLAST+ (the latest version of NCBI BLAST+ as on November 17, 2020 is 2.11.0 .) in any PHP enabled web server. The latest version of NCBI BLAST+ (standalone command-line BLAST programs) can be downloaded from the FTP s...

This is a simple tutorial which explains how to safely extract multiple sequences from a FASTA file using PHP script. I have used four functions to perform different tasks: read_fas_file() - to check invalid file, fas_check() - to check FASTA file format, get_seq() - to retrieve sequence and sequence name pairs, and fas_get() - to extract and display multiple FASTA file formatted sequences. The full source code and multiple protein sequences in FASTA file format used in this tutorial is given below. Source Code function read_fas_file($x) { // Check for Empty File if (!file_exists($x)) { print "File Not Exist!!"; exit(); } else { $fh = fopen($x, 'r'); if (filesize($x) == 0) { print "File is Empty!!"; fclose($fh); exit(); } else { $f = fread($fh, filesize($x)); fclose($fh); return $f; } } } function fas_check($x) { // Check FASTA File Format $gt = substr($x, 0, 1); if ($gt != ">") { print "Not F...

This is a simple tutorial which explains how to show or hide lines in a paragraph using JavaScript. The concept is to split the lines in the paragraph into two sections and show/hide the second section by clicking a hyperlinked text (to create a toggle effect). By default, the first section in the paragraph is set to always visible, and a hyperlink at the end of the line with onclick action to display the second section . Similarly, a hyperlink at the end of the line of the second section with onclick action is displayed after a mouse click event to hide the second section . Example This is a simple tutorial which explains how to show or hide lines in a paragraph using JavaScript. <a style = 'text-decoration: none' id = 'show_line' href = 'javascript:void(0)' onclick = "document.getElementById('more').style.display = 'inline'; document.getElementById('hide_line').style.display = 'inline'; document.getElemen...

Pointing Subdomain to another Domain Pointing a subdomain to another domain is a challenging task for those who shift to another hosting provider. The problem is, old domain must point to the new domain properly for all sub-directories (Eg. https://sub.site1.com/article/introduction.html to https://www.site2.com/article/introduction.html ). If the subdomain does not properly points to the new domain, the link may get broken. We can point a subdomain to another domain through cPanel, Zone Editor, or .htaccess file. In this tutorial, I have used cPanel version 66.0.14 to take screenshot. cPanel Method It is an easy method to point a subdomain to another domain. In this method, we can simply set both domains in cPanel to perform the task. In the Domains section of cPanel, click the Redirects link. In the Redirects page, enter the old subdomain and the new domain as shown in the screenshot below. Select the Wild Card Redirect box to redirect all files within a directory with th...