session variable increments only once
Question
I am using session values to increment 2 variable across pages with ajax..Simple one.. I have used session_start in Page1 and initialize the session variable to 0 in page 1.. In page2 I am initializing them based on condition.. I seems to increment once, them there is no effect..Here is my action page..
<?php
session_start();
?>
<html>
<body>
<?php
$j=isset($_POST['commit']) && $_POST['commit'];
if($j)
{
$num=rand(0, 100);
?>
<div>
<div id="inner_1">
<?php
if($num<27){
echo "Result:Hit";
$_SESSION['off']=$_SESSION['off']=+1;
echo "Offensive Player:";
if(isset($_SESSION['off'])){echo $_SESSION['off'];}else{echo '0';}
echo "Defensive Player:";
if(isset($_SESSION['on'])){echo $_SESSION['on'];}else{echo '0';}
}
else
{
echo "Result:Miss";
$_SESSION['on']=$_SESSION['on']=+1;
echo "Offensive Player:";
if(isset($_SESSION['off'])){echo $_SESSION['off'];}else{echo '0';}
echo "Defensive Player:";
if(isset($_SESSION['on'])){echo $_SESSION['on'];}else{echo '0';}
} ?>
</div>
</div>
<?php } ?>
</body>
</html>
Page1
<?php
session_start();
$_SESSION['off']=0;
$_SESSION['on']=0;
?>
4 answers
solution1
3 2013-04-22 17:46:15
$_SESSION['on']=$_SESSION['on']=+1;
What should this do? assign twice +1 to $_SESSION['on'] ?
To add some number to a variable, use:
$_SESSION['on'] += 1;
(Do the same for your $_SESSION['off'] )
solution2
2 2013-04-22 17:46:25
its because
$_SESSION['off']=$_SESSION['off']=+1;
^
+---unwanted = sign
it should be
$_SESSION['off']=$_SESSION['off']+1;
also same apply to the $_SESSION['on']
solution3
1 2013-04-22 17:46:48
$_SESSION['off']=+1 means it assign value 1 to session variable
Change
$_SESSION['off']=$_SESSION['off']=+1;
to
$_SESSION['off'] = $_SESSION['off']+1;
also change same as $_SESSION['on']=$_SESSION['on']=+1; above
solution4
0 2013-06-21 17:17:36
在第一个php标签中的HTML PAGE中声明会话变量，它应该可以解决您的问题。
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