If you want to save a variable to be used in the same script at different executions by the same user, you should try using sessions. Start a session (session_start()) and retrieve the variable in question (for example, $_SESSION['var']). Throughout the script, edit the variable ($_SESSION['var']) and it will automatically be saved for the next execution by the same user.
Alternatively, if you want the value of the variable to be accessed by all users (and allow all users to edit the variable), do as stated above, but before starting the session, define a session name with the session_name() function. All users will refer to the session defined in the session name, thus using the same variable despite the user.
See the related links for further help using sessions.
When we pass arguments my value, we are passing the value represented in the variable mentioned in the call, and not the variable itself. Therefore, any modifications made to that value will NOT be reflected in the variable mentioned in the call. Pass by reference, as the name suggests passes the reference of the variable mentioned in the procedure call. Any modifications made to the data of that variable is changed at the memory location of that data itself, and will be reflected in the variable itself, after the procedures completes.
Maybe your speaking a variable that contains a ternary operators such as:
Variables don't have inputs. A variable is a named memory location where a value may be read or written. You write a variable by assigning a value to it. The value may be obtained from user-input.
Substitute the variable in the denominator for a value that will make the denominator have a value of 0 or an imaginary number
A variable is a quantity which changes its value through out the program or its lifetime. But a constant is a quantity which does not change its value through out its life time. There are 5 basic constants.
This is used when you want to give a variable in an awk script a value before the script starts executing, even before the BEGIN block. You would do this on the command line if the variable needs different values for different executions rather than hardcoding it in the awk script itself.
a variable that can take on many different values, in theory, any value between the lowest and highest points on the measurement scale.
By shifting the values in an array, you are moving a key's value to the previous key. The very first key's value is obliterated. By shifting all values in the array, all keys will have a value of NULL. Unsetting a variable is entirely different -- performing a variable unsetting causes the variable to have a value of NULL, as if it was never set.
A variable can have lots of different values - as opposed to a constant which has only one. That is why it is called a variable!
a literal is a constant value, the difference is a variable can change it's value.
With a formula, you know the variable's value, and you have to calculate the value of the function of it. With an equation, you know the function's value, and you have to calculate the value of the variable.
The local variable goes away and the value is lost.
A variable is something that can take different values. These values may be qualitative (colour, gender, favourite singer etc) or quantitative. A continuous variable must be quantitative such that it can take all values between its lowest (minimum) and highest (maximum). The variable is independentif its value is not affected by the value of any other variable under consideration.
Whether or not you can change its value.
A case structure is a control mechanism that allows different executions depending on value of a label. A variation of a case structure is when the execution is presented different and may not represent the value of the label.
with an assignment: variable = value variable += value variable /= -3; ...
The dependent variable is the variable that depends on the independent variable.