Search results for: "DNS checks"

What are some methods to continuously check a database for changes without constantly reloading the page in PHP?

One method to continuously check a database for changes without constantly reloading the page in PHP is to use AJAX calls to periodically query the da...

What are some common pitfalls when using hidden input fields in PHP forms?

One common pitfall when using hidden input fields in PHP forms is relying solely on the values passed through hidden fields for critical operations or...

What potential issue could arise from using isset() in PHP for form submission validation?

Using isset() for form submission validation in PHP may not accurately determine if a form field has been submitted or not, as it only checks if a var...

How can the issue of only one user being able to reserve in a PHP program be resolved efficiently?

Issue: To ensure only one user can reserve at a time in a PHP program, we can use a locking mechanism such as file locking. When a user tries to reser...

How can including a file multiple times or defining a function in a loop lead to errors in PHP?

Including a file multiple times or defining a function in a loop can lead to errors in PHP because it can result in redeclaration issues. This means t...