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What is the difference between using unset("variable") and unset($_SESSION['variable']) to delete session variables in PHP?

Using unset("variable") will not unset a session variable, as it only works for regular variables. To delete a session variable in PHP, you need to us...

What is the difference between using single and double quotes for variable interpolation in PHP session variable names?

When using single quotes for variable interpolation in PHP session variable names, the variable name will not be replaced with its value. This is beca...

How can the use of $this->variable improve variable referencing within a PHP class?

Using $this->variable within a PHP class allows for improved variable referencing by explicitly indicating that the variable belongs to the current in...

In PHP, what is the difference between a loop variable and a running variable?

In PHP, a loop variable is a variable that is used within a loop to keep track of the current iteration, while a running variable is a variable that h...

How can special characters in variable content affect PHP variable passing with paging?

Special characters in variable content can affect PHP variable passing with paging by causing issues such as breaking the URL structure or interfering...