Search results for: "boolean constants"

What common mistakes can lead to the error message "mysql_num_rows() expects parameter 1 boolean given" in PHP?

The error message "mysql_num_rows() expects parameter 1 boolean given" occurs when the function expects a result set as the parameter, but receives a...

How can one efficiently handle form inputs such as checkboxes that correspond to boolean values in PHP?

When handling form inputs such as checkboxes that correspond to boolean values in PHP, you can check if the checkbox is checked by using the isset() f...

Are there any specific cases where using uppercase or lowercase for boolean values can cause issues in PHP?

Using uppercase or lowercase for boolean values can cause issues in PHP when performing strict comparisons (===) between boolean values and strings. P...

Are there any best practices for comparing boolean values in PHP?

When comparing boolean values in PHP, it is important to use strict comparison operators (=== and !==) to ensure that both the value and the type are...

What are the potential pitfalls of using global constants defined with define() in PHP?

Defining global constants using define() in PHP can lead to namespace pollution and potential conflicts with other constants or variables. To avoid th...