PHP - Function with Undefined Number of Arguments in PHP

Home > PHP

Function with Undefined Number of Arguments in PHP

Q

How To Define a Function with Any Number of Arguments? in PHP?

✍: FYIcenter.com

A

If you want to define a function with any number of arguments, you need to:

Declare the function with no argument.
Call func_num_args() in the function to get the number of the arguments.
Call func_get_args() in the function to get all the arguments in an array.

Here is a PHP script on how to handle any number of arguments:

<?php
function myAverage() {
  $count = func_num_args();
  $args = func_get_args();
  $sum = array_sum($args);
  return $sum/$count;  
}
$average = myAverage(102, 121, 105);
print("Average 1: $average\n");
$average = myAverage(102, 121, 105, 99, 101, 110, 116, 101, 114);
print("Average 2: $average\n");
?>

This script will print:

Average 1: 109.33333333333
Average 2: 107.66666666667

⇒Creating Your Own Functions in PHP

⇒⇒PHP Tutorials

2016-12-04, 709👍, 0💬

Specifying Argument Default Values in PHP
How To Specify Argument Default Values? in PHP? If you want to allow the caller to skip an argument when calling a function, you can define the argument with a default value when defining the function. Adding a default value to an argument can be done like this "function name($arg=expression){}. Her... 2016-12-04, 1153👍, 0💬

Returning a Reference from a Function in PHP
How To Return a Reference from a Function? in PHP? To return a reference from a function, you need to: Add the reference operator "&" when defining the function. Add the reference operator "&" when invoking the function. Here is a PHP script on how to return a reference from a functi... 2016-12-08, 1091👍, 0💬

Function with Undefined Number of Arguments in PHP
How To Define a Function with Any Number of Arguments? in PHP? If you want to define a function with any number of arguments, you need to: Declare the function with no argument. Call func_num_args() in the function to get the number of the arguments. Call func_get_args() in the function to get all t... 2016-12-04, 710👍, 0💬

Reading a Text File to an Array in PHP
How To Read a Text File into an Array in PHP? If you have a text file with multiple lines, and you want to read those lines into an array, you can use the file() function. It opens the specified file, reads all the lines, puts each line as a value in an array, and returns the array to you. Here is a... 2016-12-04, 707👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.