SEO / Webmaster

Various guides and articles that you might find interesting if you’re a webmaster.

Fix: Unexpected token o in JSON.

A short guide that I wrote on fixing the dreaded “Unexpected token o in JSON” error.

Using PHP with Radio Buttons.

This is a beginner’s tutorial on how to use the Radio Button HTML element with PHP.

Preventing X-Forwarded-For spoofing in HAProxy.

This is a guide on how to prevent IP spoofing with HAProxy.

Logging to a file with PHP.

This is a short guide on how to log text to a file using PHP.

Speeding up HAProxy SSL with multiple CPU processes.

This is a guide on how to speed up SSL on HAProxy. In this post, I will show you how to dedicate specific CPU processes to HTTP and HTTPS traffic.

Adding and modifying cookie values in Chrome Developer Tools.

A short guide showing you how to add and modify cookie values using Chrome’s Developer Tools feature.

Get request headers with PHP.

A short tutorial on how to get a client’s request headers using PHP.

Load image as BLOB using JQuery.

A short tutorial on how to load images as BLOB data using the JQuery JavaScript library.

Blocking POST, TRACE and PUT requests with HAProxy.

A short guide on how to allow or deny certain HTTP methods using HAProxy.

Prevent unwanted domains from forwarding to Nginx.

A short guide on how to prevent spammy domains from forwarding to your Nginx web server.

PHP: Calculate the ratio between two numbers.

This is a short guide on how to calculate the ratio between two numbers using PHP.

Link existing Facebook page to Facebook app.

A guide on how to link an existing Facebook page to a Facebook app.

Facebook adding “fbclid” parameter to outbound links.

Last week, I noticed that Facebook had started to attach a query parameter called “fbclid” to outbound links.

Guide: Upgrading HAProxy from 1.6 to 1.8 on Ubuntu 16.04.4 LTS (Xenial).

This post details the steps that I took to upgrade HAProxy from 1.6 to 1.8 on Ubuntu 16.04.4 LTS (Xenial).

ngx_slab_alloc() failed: no memory in SSL session shared cache “le_nginx_SSL”

An SSL issue that I ran into the other day.

Incorrect validation certificate for tls-sni-01 challenge.

The other day, I came across a frustrating issue while attempting to renew the Let’s Encrypt SSL certificate on my haproxy load balancer.

PHP: Send POST request WITHOUT cURL.

This is a short PHP tutorial on how to send a HTTP POST request without using cURL.

Solved – Fatal error: Call to undefined function curl_init

This is a common error that occurs whenever PHP’s curl extension has not been installed or enabled.

PHP: Get a list of included PHP files.

This is a PHP tutorial on how to get a list of files that have been included in your script.

Call to undefined function mysql_connect()

If you are encountering this error, it is probably because you are trying to use the old mysql_* functions in PHP 7.

Pretty cool stuff for pretty cool people.

SEO / Webmaster

Fix: Unexpected token o in JSON.

Using PHP with Radio Buttons.

Preventing X-Forwarded-For spoofing in HAProxy.

Logging to a file with PHP.

Speeding up HAProxy SSL with multiple CPU processes.

Adding and modifying cookie values in Chrome Developer Tools.

Get request headers with PHP.

Load image as BLOB using JQuery.

Blocking POST, TRACE and PUT requests with HAProxy.

Prevent unwanted domains from forwarding to Nginx.

PHP: Calculate the ratio between two numbers.

Link existing Facebook page to Facebook app.

Facebook adding “fbclid” parameter to outbound links.

Guide: Upgrading HAProxy from 1.6 to 1.8 on Ubuntu 16.04.4 LTS (Xenial).

ngx_slab_alloc() failed: no memory in SSL session shared cache “le_nginx_SSL”

Incorrect validation certificate for tls-sni-01 challenge.

PHP: Send POST request WITHOUT cURL.

Solved – Fatal error: Call to undefined function curl_init

PHP: Get a list of included PHP files.

Call to undefined function mysql_connect()

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