Categories:
.NET (961)
C (387)
C++ (185)
CSS (84)
DBA (8)
General (31)
HTML (48)
Java (641)
JavaScript (220)
JSP (109)
JUnit (31)
MySQL (297)
Networking (10)
Oracle (562)
Perl (48)
Perl (9)
PHP (259)
PL/SQL (140)
RSS (51)
Software QA (28)
SQL Server (5)
Struts (20)
Unix (2)
Windows (3)
XHTML (199)
XML (59)
Other Resources:
What Is the Scope of a Variable Defined outside a Function
What Is the Scope of a Variable Defined outside a Function? - PHP Script Tips - Creating Your Own Functions
✍: FYIcenter.com
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 outside any functions. So you can not access any global variables inside a function. Here is a PHP script on the scope of global variables:
<?php ?> $login = "fyicenter"; function myLogin() { print("Defined inside the function? ". isset($login)."\n"); } myLogin(); print("Defined outside the function? ". isset($login)."\n"); ?>
This script will print:
Defined inside the function? Defined outside the function? 1
2007-04-24, 4763👍, 0💬
Popular Posts:
Which bit wise operator is suitable for checking whether a particular bit is on or off? The bitwise ...
What are the different elements in Functions points? The different elements in function points are a...
What Is a LABEL Tag/Element? - XHTML 1.0 Tutorials - Understanding Forms and Input Fields A "label" ...
How Large Can a Single Cookie Be? - PHP Script Tips - Understanding and Managing Cookies How large c...
What is the difference between strings and character arrays? A major difference is: string will have...