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If called from within a function, the If called from the global scope, then execution of the current script file is ended. If the current script file was included or required, then control is passed back to the calling
file. Furthermore, if the current script file was included, then the value given to For more information, see Returning values.
As of PHP 7.1.0, return statements
without an argument in functions which declare a return type trigger warhog at warhog dot net ¶ 16 years ago
J.D. Grimes ¶ 9 years ago
foo() {
Table of Contents1 Subroutines - Procedures and FunctionsLearn It: What are subroutines?Subroutines - In computer programming, a subroutine is a sequence of program instructions that performs a specific task, packaged as a unit. In different programming languages, a subroutine may be called a procedure, a function, a routine, a method, or a subprogram. The generic term 'callable unit' is sometimes used. (Source Wikipedia.org) Parameters - Parameters or arguments are pieces of data that are passed into a subroutine in order for that subroutine to correctly function. In this example: def displayTotal(total): 'total' is a parameter that will be passed to the 'displayTotal' subroutine. Multiple parameters can be managed using commas, for example: def displayTotals(total1, total2, total3, etc)
Step 1
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Learn It: Advantages of using Subroutines in programs
Advantages of using Subroutines
Learn It: Passing Data within ProgramsA parameter is a variable that is “passed” to a subroutine. Using Parameters to pass data within Programs
Learn It: Returning values from a SubroutineA parameter is a variable that is “passed” to a subroutine. Returning Single Values
Returning Multiple Values
Badge It: Coding ChallengeSilver - Return values from a subroutine
Upload to Fundamentals of 3.2 Programming - 3.2.7 Subroutines (Procedures and Functions): Silver on BourneToLearn Learn It: Local and Global VariablesGlobal Variables - A variable that is declared in the main program. Local Variable - A variable that is declared and only used in one subroutine. Using Local and Global Variables within Programs
Why use local variables?
Advantages of using Local Variables
Learn It: Functions and ProceduresFunctions and Procedures
Try It: Functions
Try It: Procedures
Learn It: Structured ProgrammingStructured Programming - Structured programming (sometimes known as modular programming) is a subset of procedural programming that enforces a logical structure on the program being written to make it more efficient and easier to understand and modify. Structured programming frequently employs a top-down design model, in which developers map out the overall program structure into separate subsections. A defined function or set of similar functions is coded in a separate module or submodule, which means that code can be loaded into memory more efficiently and that modules can be reused in other programs.
Advantages of Structured Programming:
Badge It: Exam QuestionsGold - Answer the following questions:
Upload to Fundamentals of 3.2 Programming - 3.2.7 Subroutines (Procedures and Functions): Gold on BourneToLearn Badge It: Exam Question and Coding ChallengePlatinum - Exam question/Code Challenge
Upload to Fundamentals of 3.2 Programming - 3.2.7 Subroutines (Procedures and Functions): Platinum on BourneToLearn What is the datatype of the value returned by the random library function?The random. random() method returns a random float number between 0.0 to 1.0. The function doesn't need any arguments.
What function returns a string that is within another string?This example uses the InStr function to return the position of the first occurrence of one string within another.
What is the purpose of the return statement in a function quizlet?What is the purpose of the Return statement in a function? The Return statement specifies the value that the function returns to the part of the program that called the function. When the Return statement is executed, it causes the function to terminate and return the specified value.
What term is used in the ending terminal symbol of a function flowchart return End function End function return none of these?The end terminal for function/subroutine must use “Return” instead of “Stop”. Process: Used whenever data is being manipulated. One flow line enters and one flow line exits. Input/Output: Used whenever data is entered (input) or displayed (output).
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