PHP has a vast set of built-in functions that every developer should know to write efficient and secure code. Here are some essential ones: 1. String Functions strlen($string): Returns the length of a string. strpos($haystack, $needle): Finds the position of the first occurrence of a substring. str_replace($search, $replace, $subject): Replaces occurrences of a string within another...

Film cameras, iconic tools of photography, operate on simple yet elegant principles that have been refined over the years. Unlike digital cameras, which capture images using electronic sensors, film cameras rely on chemical reactions to record light onto physical film. Here’s a detailed look at how these fascinating devices work, along with a visual representation.1. The Basics of a Film...

Inserting a checkbox in Excel is an easy task, the checkbox control is available in the Excel developer tools option. Checkbox and other controls like drop downs can be quite helpful while designing forms in Excel.These controls prevent users from entering some unwanted data in your forms and hence they are preferred to traditional textboxes.Today in this post, I will be guiding you...