Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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My Portfolio - Robert Lerner
A portfolio of sites I have developed and designed.
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The Projects - Robert Lerner
Welcome to the projects, where I spend time with great intentions, but instead, crime and poverty are the result.
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Certificates and Education - Robert Lerner
My certificates and educational history.
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About Me - Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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My Bookmarks - Robert Lerner
Bookmarks for pages that I have found with interesting content, mostly web programming.
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Letters of Recommendation - Robert Lerner
Letters of Reccomendation from freelance employers and college professors.
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Accomplishments - Robert Lerner
Robert Lerner's programming accomplishments, from PHP forum creation to Car PC software
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479 Bytes to your Database - Robert Lerner
How can such a tiny amount of code steal all the database credientials from your server?
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420 Bytes to your Database - Robert Lerner
How can such a tiny amount of code steal all the database credientials from your server?
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Register_Globals Override - Robert Lerner
Use this script to emulate the PHP 'register_globals' directive being set to ON. This script should only be used while updating legacy applications.
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Generate Random Passwords - Robert Lerner
Generate a random password, or bulk passwords in many formats (CSV, SQL Inserts, Tab, Windows, Linux, Mac) or use your own format.
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Text Reversal Exploit and Fix - Robert Lerner
How to detect and prevent this Text Reversal Exploit that uses ASCII characters 226, 128, and 174 to modify the appearance of your site.
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Do Not Track Headers in PHP - Robert Lerner
How to work with Do Not Track Headers in PHP to protect the privacy of your users.
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String/Letter Rotation Decryption - Robert Lerner
This program simply rotates characters and checks to see if they have any other meaning.
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Atbash Cipher - Robert Lerner
The Atbash Cipher is an easily reversible, elementary cipher based around a reverse-alphabet substitution cipher.
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Polybius/Smitty Tap Code Cipher - Robert Lerner
From Vietnam, all the way to modern day American penitentiary comes the tap code. Based partially on a Polybius square, inmates and POWs used this method to communicate to each other where they were not able to talk.
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Live Letter Frequency Analysis - Robert Lerner
This page generates an image representitive of a letter frequency analysis based on a live forum site.
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Unilateral Frequency Distribution Analysis - Robert Lerner
A Unilateral Frequency Distribution Analysis (UFDA) is a standard technique used to profile cryptographical encryption systems to attempt to determine offsets used in a substitution cipher.
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Base64 Online Encoder - Robert Lerner
Use this page to convert text to Base64 encoding
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Automatic Theme Changer with PHP - Robert Lerner
Automatically update your site's CSS and logo (theme) depending on a date range.
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MySQL PHP Data Dictionary Script - Robert Lerner
This free script is designed to help database administrators, system administrators, and web developers generate data dictionaries, and determine a leaner database hierarchy.
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PHP Variable Listing - Robert Lerner
Negate register_globals problems, and get a list of all the variables in your PHP script.
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PHP Benchmarking - Robert Lerner
Benchmarks for commonly used PHP code, such as evaluations, concatenations, destruction, and encapsulation
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Tips to Great SEO - Robert Lerner
Want the number 1 spot on search engines? Follow these SEO (Search Engine Optimization) guidelines to get your site up there!
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Go GeSHi Function - Robert Lerner
Use this function for easier and quicker GeSHi implementations.
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SEO for Derps - Robert Lerner
Similar to the Yellow Pages days, search engine results are sorted alphabetically, so starting your company name with A's helps get you to the top sooner. Typically, in computers, numbers would be first (like this: 0123456789ABCD...), however with Google's WebSense algorithm (who owns Yahoo, Jeeves and Baidu), it puts the letters first since there are so many sites that start with a letter.
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Recursive str_replace and str_ireplace PHP - Robert Lerner
Use PHP's str_replace and str_ireplace with recursion to repeat the replacement until all remaining values are altered.
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PHP Human Number Function - Robert Lerner
Converts numbers passed to this function to a more humanistic value. Adds commas and suffixes (st, nd, rd, th). Very simple function.
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Columnize an Array with PHP - Robert Lerner
This function uses an array to output a table with the elements diveded into columns.
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Image Comparison Function in PHP with GD Library - Robert Lerner
Compare two images to find the percentage of differing pixels, and returns an array with the results. Returns boolean TRUE for custom warning and error percentage levels.
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PHP Gradient Generator - Robert Lerner
Use PHP to generate HTML hexadecimal color codes in a linear gradient.
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Get ID3 Tags with PHP - Robert Lerner
A quick and easy way to extract the artist, title, album, year, and other information from your MP3 files via ID3 tags.
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Convert bytes to MB, GB, TB and PB with PHP - Robert Lerner
Convert bytes to megabyte, gigabyte, terabyte and petabyte with PHP
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Name Generator - Robert Lerner
Use name structures to generate a (usually poor), foriegn looking name.
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Find Illinois Drivers License Numbers - Robert Lerner
Illinois Drivers License Numbers are derived from information about the driver. This script will calculate license numbers based on this information.
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World Time Zones - Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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Simple Log Splitter - Robert Lerner
Splits server logs into days and enters into a folder.
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My Age in Units - Robert Lerner
Enter your birthdate, and see how old you are in seconds, minutes, hours, days, decades, and more.
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What I'm Made Of - Robert Lerner
Enter your weight to see your approximate material composition.
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Electricity Cost Calculator - Robert Lerner
Using this tool, you can calculate the approximate cost of running an appliance from its amp or wattage requirement.
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Web-Based SaaS Calculator - Robert Lerner
A web-based, Software as a Service version of Windows 7's calculator.
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Setting up a Home Windows Web Server - WAMP - Robert Lerner
Learn how to convert your Home PC into a ready-to-use server and start your own website!
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LinkReferral LinkReviewer site is a scam. - Robert Lerner
Linkreferral and Linkreviewer sites are both scams. Neither generate links, and both use fraudulent (and SEO damaging) techniques to accomplish whatever they're trying to accomplish.
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My Wikipedia Reads - Robert Lerner
A ton of Wikipedia links of articles I read to cause my brain to burn some sort of calories
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Code Use License - Robert Lerner
Of course I'd rather make money doing this, but I'm in a sharing mood. So, check out the license and make sure you're good with it before using it.
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Disclaimer - Robert Lerner
I disclaim your claims.
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Privacy Policy - Robert Lerner
Speaking of privates, let's discuss this in private...
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Linux Versus Windows - Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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Domains for Sale - Robert Lerner
Domains I bought, with plans to do something with them, and now you get the chance instead.
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Browser Comparison - Robert Lerner
An indepth review of the most popular web browsers including Firefox, Safari, Opera, Internet Explorer, and Chrome
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UNIX TimeStamp Visual Basic 6 Time() Function - Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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FOPEN for Databases? - Robert Lerner
Robert Lerner is a web security specialist and PHP and MySQL developer in the South suburbs of Chicago.
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Contact Me - Robert Lerner
Contact Robert Lerner for your web development and security requirements.
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