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PURPOSE:
Simply to keep PHP from geeking out when an undefined POST, GET, or SESSION variable
is meet, always returning a defined variable. (In particular for use in form check boxes.)
----
USAGE:
getvar( mixed var [, int ])
postvar( mixed var [, int ])
sessionvar( mixed var [, int ])
include_once("get_post.php");
Expecting $_GET["somevar"], use instead getvar("somevar")
Expecting $_POST["somevar"], use instead postvar("somevar")
Expecting $_SESSION["somevar"], use instead sessionvar("somevar")
Example:
$sql = "INSERT INTO tbl_something
SET some_column = " . postvar("checkbox_name",true) . ",
some_other_column = '" . postvar("text_box_name") . "'";
The first argment is the variable name, the second tells the function to return an int (0)
on false.
| <?php
/*
----
getvar/postvar - When you just don't know what to expect!
----
Brian Tafoya
briantafoya.com
"Taking over the planet one open source script at a time!"
----
PURPOSE:
Simply to keep PHP from geeking out when an undefined POST, GET, or SESSION variable
is meet, always returning a defined variable. (In particular for use in form check boxes.)
----
USAGE:
getvar( mixed var [, int ])
postvar( mixed var [, int ])
sessionvar( mixed var [, int ])
include_once("get_post.php");
Expecting $_GET["somevar"], use instead getvar("somevar")
Expecting $_POST["somevar"], use instead postvar("somevar")
Expecting $_SESSION["somevar"], use instead sessionvar("somevar")
Example:
$sql = "INSERT INTO tbl_something
SET some_column = " . postvar("checkbox_name",1) . ",
some_other_column = '" . postvar("text_box_name") . "'";
The first argment is the variable name, the second tells the function to return an int (0)
on false.
*/
/*
Prevent undefined get variables
*/
function getvar($name,$isint="") {
if(isset($_GET[$name])) {
return $_GET[$name];
} else {
if($isint) {
return 0;
} else {
return "";
}
}
}
/*
Prevent undefined post variables
*/
function postvar($name,$isint="") {
if(isset($_POST[$name])) {
return $_POST[$name];
} else {
if($isint) {
return 0;
} else {
return "";
}
}
}
/*
Prevent undefined session variables
*/
function sessionvar($name,$isint="") {
if(isset($_SESSION[$name])) {
return $_SESSION[$name];
} else {
if($isint) {
return 0;
} else {
return "";
}
}
}
?> | |
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Categories : PHP, Beginner Guides, Variables | |
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