Making Variables Global in PHP?
Need to make $courseInfo and $row global so that they can be used for printing the row details in the header DIV.
Don't have a clue how to do this. Any help would be great.
<?php
// Get Course ID From Link
$ID = mysql_real_escape_string($_REQUEST['ID']);
// Check the Course ID exists
$courseCheck = mysql_query("SELECT * FROM Courses WHERE CourseID = '".$ID."'");
if (mysql_num_rows($courseCheck) == 1) {
$checkMember = mysql_query("SELECT * FROM CourseMembers WHERE CourseID = '".$ID."' AND UserID = '".$_SESSION['UserID']."'");
if (mysql_num_rows($checkMember) == 1) {
?>
<html>
<head>
<!-- Style Sheets -->
<link rel="stylesheet" href="style/reset.css" type="text/css" media=screen />
<link rel="stylesheet" href="style/style.css" type="text/css" media=screen />
</head>
<body>
<?php
if ($_SESSION['LoggedIn'] == 1){
$courseInfo = mysql_query("SELECT * FROM Courses WHERE CourseID = '".$ID."'");
$row = mysql_fetch_assoc($courseInfo);
?>
<div id="container">
<div id="side">
<?php include("lib/sidebar.php"); ?>
</div>
<div id="main">
<div id="mainbox">
<div id="header"><b><?php echo $row['CourseName']; ?></b></div>
<p>Hello world, this is a test.</p>
</div>
</div>
</div>
<div class="clear"></div>
<?php
}
else {
echo "Not logged in.";
}
}
else {
echo "开发者_如何学JAVAYou are not a member of this Course";
}
}
else {
echo "No Course Found";
}
?>
</body>
I think they're already global. "PHP does not have a block-level scope."
You could store them in session variables, similarly to your $_SESSION['LoggedIn']
You could also use php variable $GLOBALS for making your variables visible in all scopes but I would not recommend it for this kind of task. Also, beware - $GLOBALS contains superglobals like $_POST and $_GET, you should keep that in mind, when ie. iterating over it. Furthermore - when you can access $_GET and $_POST in functions, that have smaller scope you still have to use $GLOBALS to access custom ones.
Example for this kind behaviour:
<?php
error_reporting(-1);
$GLOBALS['_customVar'] = 'foobar';
$GLOBALS['_GET']['id'] = 'myId';
function myFnc() {
echo $_customVar;
}
function myFnc2() {
echo $_GET['id'];
}
myFnc();
myFnc2();
?>
加载中,请稍侯......
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