在php代码中添加javascript和在javascript中添加php代码

Question

I am trying to get the info from a PHP variable in to JavaScript while in the PHP if statement. I am not sure what is wrong. I tried to escape the PHP code then I thought I cannot have PHP code tags with in PHP code.

Here is my code but this does not work:

$user =& JFactory::getUser();
if ($user->guest) 
    echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',1,\'User_Status\',\'Guest\',1])</script>';
    echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\'GuestUser\',1])</script>';
} else {
    echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',1,\'User_Status\',\'LoggedIn\',1])</script>';
    echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\' "echo $user->id "\', 1])</script>';
}

Can you please help?
Many Thanks
Jai

Answer 1

Should be

echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\''.$user->id.'\', 1])</script>';

I guess... no echo inside of echo and connect string via .

You also might to try out the following:

<?php 
   $user =& JFactory::getUser();
   if ($user->guest) {
   ?>
      <script type="text/javascript">_gaq.push(['_setCustomVar',1,'User_Status','Guest',1])</script>
      <script type="text/javascript">_gaq.push(['_setCustomVar',2,'UserID','GuestUser',1])</script>
   <?php
   } else {
   ?>
      <script type="text/javascript">_gaq.push(['_setCustomVar',1,'User_Status','LoggedIn',1])</script>
      <script type="text/javascript">_gaq.push(['_setCustomVar',2,'UserID','<?=$user->id?>', 1])</script>   
   <?php
   }
   ?>

This might be easier to read.

Answer 2

The quotes are breaking your string! In this cases I usually take the part of string that is between this quotes and put it in a variable. For example $setcustomvar="'_setCustomVar\\'" and then you add it in your echo code like this:

'<script type="text/javascript">_gaq.push([\'.$setcustomvar.'

etc..

and like the others are saying you can't put an echo inside a string.

Answer 3

您无法在上次回声中访问php变量，以动态获取用户-> id

echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\' '.$user->id.' "\', 1])</script>';

Answer 4

javascript code is regarded as string in php. Just concatenate your variable value with the string and it will work.

Try this:

echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\'' . $user->id . '\', 1])</script>';

Answer 5

Instead of:

echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\' "echo $user->id "\', 1])</script>';

Try this:

echo '<script type="text/javascript">_gaq.push([\'_setCustomVar\',2,\'UserID\',\' ' . $user->id . '\', 1])</script>';

Can can't nest echo 's. You'll have to use string concatenation, instead.

However, for full efficiency, I'd suggest this:

<?php
    $user =& JFactory::getUser();
    $userStatus = 'LoggedIn';  // Set default values first.
    $userId = $user->id;
    if ($user->guest) {
        $userStatus = 'Guest'; // Override defaults if the user is a guest.
        $userId = 'GuestUser';
    }
?>
<script type="text/javascript">_gaq.push(['_setCustomVar',1,'User_Status','<?=$userStatus  ?>',1])</script>
<script type="text/javascript">_gaq.push(['_setCustomVar',2,'UserID','<?=$userId ?>',1])</script>

Answer 6

Try this will work:

$user =& JFactory::getUser();
if ($user->guest) 
    echo '<script type="text/javascript">_gaq.push([\""_setCustomVar"\",1,\""User_Status"\",\""Guest"\",1])</script>';
    echo '<script type="text/javascript">_gaq.push([\""_setCustomVar"\",2,\""UserID"\",\""GuestUser"\",1])</script>';
} else {
    echo '<script type="text/javascript">_gaq.push([\""_setCustomVar"\",1,\""User_Status"\",\""LoggedIn"\",1])</script>';
    echo '<script type="text/javascript">_gaq.push([\""_setCustomVar"\",2,\""UserID"\",\"" $user->id "\", 1])</script>';
}

You don't need to give echo $user_id inside the php echo. just $user_id will work