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Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseDatabases

Connecting to MySQL from PHP: mysqli and PDO, with a working example

PHP has two ways of talking to the database: mysqli (MySQL and MariaDB only) and PDO (which also serves PostgreSQL and others). For a new project PDO is the safe…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseWordPress & CMS

Stopping spam comments in WordPress

If your blog has comments open, sooner or later it fills up with offers for watches, links to doubtful sites and sentences that make no sense. Whoever wrote them is…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseBackups & Migration

Why a backup is huge or fails, and how to make it smaller

A huge backup is almost never “the site”: it is what has piled up around the site. Cache folders, old copies forgotten in the account, error files that kept growing,…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseE-mail

Error 421 and 451: temporary failures, and why the message is delayed and not lost

An error that starts with a 4 (421, 450, 451, 452) is a “not now, try later” reply. It is not a refusal. The server that sent the message keeps…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseE-mail

Track Delivery: finding out what happened to a message you sent

“I sent it, and they say they did not receive it.” Instead of guessing, cPanel has a screen that shows the trail of each message that went through the server:…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseBackups & Migration

The 3-2-1 backup rule for a website: which three copies, and where to keep them

The 3-2-1 rule says: 3 copies of what matters, on 2 different kinds of storage, with 1 copy away from where the rest lives. The point is not the numbers:…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseBackups & Migration

Moving to cPanel from Plesk, DirectAdmin or another panel: what moves and what you rebuild

A control panel is just the shop window for five things that exist on any server: files, databases, mailboxes, DNS records and scheduled tasks. So changing panels means copying those…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseChoosing the Right Plan

Several websites on one plan: how many fit before you need the next step

As many as the plan counts and the resources can carry, and those are two different sums. The first is a matter of numbers: each plan says how many sites…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseSpeed, Cache & CDN

Switching the CDN off, and confirming it really is off

There are three ways to switch a CDN off, and they are very different from one another. Picking the wrong one gets you one of two results: either nothing is…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseAI & Agents

ChatGPT, Claude or Gemini: which AI tool suits which task

ChatGPT, Claude, Gemini, Copilot, Grok. New versions turn up month after month and the question that reaches us is always the same: which one is best? The honest answer is…