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empec

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  1. I found out that <?=++$a?> is just a shortcut for saying <?php echo ++$a; ?> Thanks empec!
  2. i'm trying to develop a deeper understanding of sessions, and I found this article on php.net regarding sessions with the following script; <?php // Get the private context session_name('Private'); session_start(); $private_id = session_id(); $b = $_SESSION['pr_key']; session_write_close(); // Get the global context session_name('Global'); session_id('TEST'); session_start(); $a = $_SESSION['key']; session_write_close(); // Work & modify the global & private context (be ware of changing the global context!) ?> <html> <body> <h1>Test 2: Global Count is: <?=++$a?></h1> <h1>Test 2: Your Count is: <?=++$b?></h1> <h1>Private ID is <?=$private_id?></h1> <h1>Gloabl ID is <?=session_id()?></h1> <pre> <?php print_r($_SESSION); ?> </pre> </body> </html> <?php // Store it back session_name('Private'); session_id($private_id); session_start(); $_SESSION['pr_key'] = $b; session_write_close(); session_name('Global'); session_id('TEST'); session_start(); $_SESSION['key']=$a; session_write_close(); ?> [EDIT BY danbrown AT php DOT net: Contains a bugfix provided by (lveillette AT silexmultimedia DOT com) on 19-NOV-09.] I do not understand line 21 and 22. <h1>Test 2: Global Count is:<?=++$a?></h1> If I change this to; <h1>Test 2: Global Count is:<?php echo =++$a; ?></h1> or <h1>Test 2: Global Count is:<?php =++$a ?></h1> I would get a parse error, unexpected "=" in line 21. Can anyone explain why this is? * Why is it being echoed * Why can I not use echo in this case * Why does the code not start with <?php ? * What does line 21 even mean? =++$a? Thanks in advance guys!
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