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could not understand HERE in php
Posted: Tue May 03, 2005 6:09 am
by saumya
i am following a book and there its written
Code: Select all
<html>
<head>
<title>Persistence Demo</title>
</head>
<body>
<h1>Persistence Demo</h1>
print <<<HERE
some html codes.
HERE;
</body>
</html>
but when i run it from my server it does not show me the html codes.it shows the <h1> lines in headers but does not show from <<<HERE. can any body tell me what that is for
print <<<HERE
HERE;
Posted: Tue May 03, 2005 6:45 am
by JayBird
Posted: Tue May 03, 2005 10:51 am
by Skara
you forgot your php brackets.
Code: Select all
<html>
blah blah blah
<?php
// place php code in here
// such as..
print <<<EOS
this is a bunch of text that will be printed...
blah blah blah
you can put ' and " without escaping them.
if you put {$foo}, it will be parsed.
this last line must be on the left edge of the screen (EOS;):
EOS;
?>
more html...
</html>
Posted: Thu May 05, 2005 2:56 am
by saumya
i am having problem here with this.
Code: Select all
<html>
<head>
<title>Persistence Demo</title>
</head>
<body>
<h1>Persistence Demo</h1>
<form>
<?PHP
//increment the counters
$txtBoxCounter++;
$hdnCounter++;
print <<<HERE
<input type="text" name="txtBoxCounter" value="$txtBoxCounter">
<input type="hidden" name="hdnCounter" value="$hdnCounter">
<h3>The Hidden Value is $hdnCounter</h3>
<input type="submit" value="Click to increment">
HERE;
?>
</form>
</body>
</html>
it does not show me anything in the browser.help me please
Posted: Thu May 05, 2005 3:27 am
by JayBird
RTM!!
If you read the link i gave you, you would have noticed this
It is very important to note that the line with the closing identifier contains no other characters, except possibly a semicolon (;). That means especially that the identifier may not be indented, and there may not be any spaces or tabs after or before the semicolon.
Posted: Thu May 05, 2005 4:59 am
by saumya
could not got you?Please forgive me of my dumbness but explain.In my code there are nothing in the end.but still why not working?
Posted: Thu May 05, 2005 5:14 am
by phpScott
this is what i think he means
Code: Select all
<html>
<head>
<title>Persistence Demo</title>
</head>
<body>
<h1>Persistence Demo</h1>
<form>
<?PHP
//increment the counters
$txtBoxCounter++;
$hdnCounter++;
print <<<HERE
<input type="text" name="txtBoxCounter" value="$txtBoxCounter">
<input type="hidden" name="hdnCounter" value="$hdnCounter">
<h3>The Hidden Value is $hdnCounter</h3>
<input type="submit" value="Click to increment">
HERE;
?>
</form>
</body>
</html
you will note the differnce in that the HERE; is not indented anymore.
Posted: Thu May 05, 2005 5:40 am
by saumya
thats it buddy. It is working fine.
thank you, thank you very much.Could not express myself.
thanks
saumya
Posted: Thu May 05, 2005 6:24 am
by saumya
it ies working fine but why my variables are not updated each time i click the button.I was follwing a book, its said there that you should see the hidden variable update each time you click the button.
thanks
saumya
Posted: Thu May 05, 2005 6:32 am
by phpScott
do a search on this site for global variables and check out
Note that register_globals is going to be depracated (i.e., turned off by
default) in the next version of PHP, because it often leads to security bugs.
Read
http://php.net/manual/en/security.registerglobals.php for further
information
it will have to do with you php.ini file and something called register_globals = off.
This is done for security reasons.
Posted: Thu May 05, 2005 6:34 am
by infolock
if you don't post what changes you made and show us the new code, we can't help you.
Posted: Thu May 05, 2005 6:42 am
by saumya
i am sorry.here is my code
Code: Select all
<html>
<head>
<title>Persistence Demo</title>
</head>
<body>
<h1>Persistence Demo</h1>
<form>
<?PHP
//increment the counters
$txtBoxCounter++;
$hdnCounter++;
print <<<HERE
<input type="text" name="txtBoxCounter" value="$txtBoxCounter">
<input type="hidden" name="hdnCounter" value="$hdnCounter">
<h3>The Hidden Value is $hdnCounter</h3>
<input type="submit" value="Click to increment">
HERE;
?>
</form>
</body>
</html>
Posted: Thu May 05, 2005 10:01 am
by vigge89
saumya wrote:i am sorry.here is my code
<code>
Code: Select all
<html>
<head>
<title>Persistence Demo</title>
</head>
<body>
<h1>Persistence Demo</h1>
<form method="get">
<?PHP
//increment the counters
$_GET['txtBoxCounter']++;
$_GET['hdnCounter']++;
print <<<HERE
<input type="text" name="txtBoxCounter" value="{$_GET['txtBoxCounter']}">
<input type="hidden" name="hdnCounter" value="{$_GET['hdnCounter']}">
<h3>The Hidden Value is $hdnCounter</h3>
<input type="submit" value="Click to increment">
HERE;
?>
</form>
</body>
</html>
Posted: Fri May 06, 2005 3:46 am
by saumya
Thank you very much. its working now.