PHP - Function Returns Data by Value in PHP

Function Returns Data by Value in PHP

Q

How Values Are Returned from Functions? in PHP?

✍: FYIcenter.com

A

If a value is returned from a function, it is returned by value, not by reference. That means that a copy of the value is return. Here is a PHP script on how values are returned from a function:

<?php
$favor = "vbulletin";
function getFavor() {
  global $favor;
  return $favor;
}
$myFavor = getFavor();
print("Favorite tool: $myFavor\n");
$favor = "phpbb";
print("Favorite tool: $myFavor\n");
?>

This script will print:

Favorite tool: vbulletin
Favorite tool: vbulletin

As you can see, changing the value in $favor does not affect $myFavor. This proves that the function returns a new copy of $favor.

⇒Creating Your Own Functions in PHP

⇒⇒PHP Tutorials

2016-12-08, 398👍, 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, 666👍, 0💬

Function Returns Data by Value in PHP
How Values Are Returned from Functions? in PHP? If a value is returned from a function, it is returned by value, not by reference. That means that a copy of the value is return. Here is a PHP script on how values are returned from a function: <?php $favor = "vbulletin"; function getFavor() { ... 2016-12-08, 399👍, 0💬

Accessing Global Variables inside a Function in PHP
How To Access a Global Variable inside a Function? in PHP? By default, global variables are not accessible inside a function. However, you can make them accessible by declare them as "global" inside a function. Here is a PHP script on declaring "global" variables: <?php ?> $intRate = 5... 2016-12-08, 395👍, 0💬

Global Variables in Main Script in PHP
What Is the Scope of a Variable Defined outside a Function? in PHP? A variable defined outside any functions in main script body is called global variable. However, a global variable is not really accessible globally any in the script. The scope of global variable is limited to all statements outsid... 2016-12-08, 361👍, 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.