Web Development

Your hosting panel offers PHP 8.2, 8.3, 8.4 and 8.5. Which one should you pick? The highest number is easy to spot. The useful choice is the one your ...

Allowed memory size exhausted means a PHP request exceeded its configured memory limit. It does not, by itself, prove that the server has run out of R...

Logging out should make the current browser stop presenting an authenticated session. Clearing a page variable is not enough: the server-side session ...

Email activation can confirm that a person can receive mail at an address, but it does not prove a legal identity. Treat the activation link as a temp...

A password reset link is a temporary credential. Anyone who obtains it may be able to change the account password, so the token must be difficult to g...

A “remember me” checkbox creates a credential that lasts longer than the current browser session. Treat it like a password reset token: someone who st...

A login can appear successful and still lose its session on the next request. PHP sessions depend on a cookie reaching the browser and the server bein...

A card can appear in a wide main column on one page and a narrow sidebar on another. A media query sees the viewport; a container query lets the compo...

JSON decoding can fail because a request is malformed, and encoding can fail because a value cannot be represented as valid JSON. If a program ignores...

HTML can catch several common form mistakes before a request is sent. The browser can tell a user that a required field is empty or that a value does ...