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Date: Sun Dec 04 2005 - 19:43:49 CST

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php-general Digest 5 Dec 2005 01:43:49 -0000 Issue 3832

Topics (messages 226832 through 226850):

Re: PDF Generator
        226832 by: Norbert Wenzel
        226835 by: Dan Harrington

Re: need session_start() to recall session data.
        226833 by: M

Re: Count and Preg_Replace Using Version 4.4.1
        226834 by: comex
        226840 by: Shaun
        226843 by: Curt Zirzow
        226848 by: Shaun

test
        226836 by: mr php

Exception
        226837 by: mr php
        226839 by: Anas Mughal
        226841 by: Curt Zirzow
        226842 by: Christian Herrnbock

Problem with pdf_show_boxed()
        226838 by: ±i ®p»Ê

Re: How would you write this?
        226844 by: Curt Zirzow
        226850 by: Michael B Allen

Re: Mail SMTP settings
        226845 by: Curt Zirzow

Re: Sessions, Expire-headers and Firefox's back button
        226846 by: Curt Zirzow

Re: why php not running ?
        226847 by: Curt Zirzow
        226849 by: Mehmet Fatih AKBULUT

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----------------------------------------------------------------------

attached mail follows:

Rick Lim wrote:
> What is the best FREE pdf generator for PHP?

i used FPDF without any problems.

attached mail follows:

I have a TON of forms that I have to populate, can I make a PDF file using
Acrobat Professional, and then use PHP to populate those forms and have text
inserted into the pre-made text fields that I made using Acrobat? And if
so, what is the best tool for that? I'd prefer to do it for free, but
spending $$ is fine too.

Thanks
Dan

Rick Lim wrote:

> What is the best FREE pdf generator for PHP?

attached mail follows:

Matt Monaco wrote:
> Yes, I actually changed the destructors to handle the session as you
> indicated a few minutes after I posted, however I still have no clue as to
> why I would need to do a session_start() to get data from the session.

How else would php know you want session started? You can turn
session.auto_start on, but then you don't have control over session
parameters.

attached mail follows:

> form'.$count.'...
You can use preg_replace_callback or the e pattern modifier to let you
run php code for the replacement:
http://us3.php.net/manual/en/function.preg-replace-callback.php
http://us3.php.net/manual/en/reference.pcre.pattern.modifiers.php

attached mail follows:

"comex" <comexkgmail.com> wrote in message
news:6bf32280512040808s16253e33r6cf972cec52c5a58mail.gmail.com...
> form'.$count.'...
You can use preg_replace_callback or the e pattern modifier to let you
run php code for the replacement:
http://us3.php.net/manual/en/function.preg-replace-callback.php
http://us3.php.net/manual/en/reference.pcre.pattern.modifiers.php

Hi Comex,

Thanks for your reply, I have modified the code so I have a call back
function:

echo = preg_replace_callback( '/<p[^>]*>(.*?)<\/p>/ms', "callback",
file_get_contents($_GET['file']) );

function callback($matches){
  return
  '<form name="form" target="_parent"
action="/index.php?action=edit_paragraph&file='.$_GET['file'].'"
method="post">
    <input type="hidden" name="old_html"
value="'.htmlentities($matches[0]).'">
    <p><a href="javascript:;"
onclick="document.form.submit();">'.$matches[1].'</a></p>
   </form>';
}

But I still can't see how I can increment a value in each return string?

attached mail follows:

On Sun, Dec 04, 2005 at 07:00:00PM -0000, Shaun wrote:
>
> "comex" <comexkgmail.com> wrote in message
> news:6bf32280512040808s16253e33r6cf972cec52c5a58mail.gmail.com...
> > form'.$count.'...
> You can use preg_replace_callback or the e pattern modifier to let you
> run php code for the replacement:
> http://us3.php.net/manual/en/function.preg-replace-callback.php
> http://us3.php.net/manual/en/reference.pcre.pattern.modifiers.php
>
> Hi Comex,
>
> Thanks for your reply, I have modified the code so I have a call back
> function:
>
> echo = preg_replace_callback( '/<p[^>]*>(.*?)<\/p>/ms', "callback",
> file_get_contents($_GET['file']) );
>
> function callback($matches){
> return
> '<form name="form" target="_parent"
> ...
>
> But I still can't see how I can increment a value in each return string?

function callback($matches) {
  static $i = 0; // <-- maintains counter within function scope
  $i++;

  return "<form name="form$i">....</form>";
}

btw, i've been meaning to mention this in the last few posts of
yours, but have you considered using DOM to make this happen. When
ever I see a regex solution for parsing an html document, it makes
me cringe.

Curt.
--
cat .signature: No such file or directory

attached mail follows:

"Curt Zirzow" <czirzowgmail.com> wrote in message
news:20051204193110.GF5243bagend.shire...
> On Sun, Dec 04, 2005 at 07:00:00PM -0000, Shaun wrote:
>>
>> "comex" <comexkgmail.com> wrote in message
>> news:6bf32280512040808s16253e33r6cf972cec52c5a58mail.gmail.com...
>> > form'.$count.'...
>> You can use preg_replace_callback or the e pattern modifier to let you
>> run php code for the replacement:
>> http://us3.php.net/manual/en/function.preg-replace-callback.php
>> http://us3.php.net/manual/en/reference.pcre.pattern.modifiers.php
>>
>> Hi Comex,
>>
>> Thanks for your reply, I have modified the code so I have a call back
>> function:
>>
>> echo = preg_replace_callback( '/<p[^>]*>(.*?)<\/p>/ms', "callback",
>> file_get_contents($_GET['file']) );
>>
>> function callback($matches){
>> return
>> '<form name="form" target="_parent"
>> ...
>>
>> But I still can't see how I can increment a value in each return string?
>
> function callback($matches) {
> static $i = 0; // <-- maintains counter within function scope
> $i++;
>
> return "<form name="form$i">....</form>";
> }
>
> btw, i've been meaning to mention this in the last few posts of
> yours, but have you considered using DOM to make this happen. When
> ever I see a regex solution for parsing an html document, it makes
> me cringe.
>
> Curt.
> --
> cat .signature: No such file or directory

Hi Curt,

Thanks for your reply. So basically I do something like:

$doc = new DOMDocument();
$doc->loadHTML($file);

$p = $doc->getElementsByTagName('p');

How would then wrap the following around each <p> tag:

<form name="form" target="_parent"
action="/index.php?action=edit_paragraph&file='.$_GET['file'].'"
method="post">
    <input type="hidden" name="old_html"
value="'.htmlentities($matches[0]).'">
    <p><a href="javascript:;"
onclick="document.form.submit();">'.$matches[1].'</a></p>
</form>

BTW if its not obvious I am trying to create a CMS that lets users edit
anything within a <p> tag!

attached mail follows:

test

attached mail follows:

Hello
Is it good to use exception handling for error handling or I should use only
for exceptions?
For example:
Is it good to throwing user input errors with throw new Exception().
Thanks

attached mail follows:

I would recommend keeping error handling and exceptions separate.

On 12/4/05, mr php <phpphpphpgmail.com> wrote:
>
> Hello
> Is it good to use exception handling for error handling or I should use
> only
> for exceptions?
> For example:
> Is it good to throwing user input errors with throw new Exception().
> Thanks
>
>

--
Anas Mughal

attached mail follows:

On Sun, Dec 04, 2005 at 08:07:48PM +0330, mr php wrote:
> Hello
> Is it good to use exception handling for error handling or I should use only
> for exceptions?
> For example:
> Is it good to throwing user input errors with throw new Exception().

I'm not sure if I understand how you mean by this but it sounds to
me that your asking if you should use exception catching vs if
statments:

try {
  is_valid_username($username);
catch (Exception $e) {
  $errors[] = $e->errorMessage;
}

imo, programming like that doesn't make sense, exceptions are more
designed for errors in assumed succesfull code. Consider:

<?php

try {
    $dbh = new PDO('mysql:host=localhost;dbname=test', '', '');
    $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $sql = "select bar from foo";
    $stmt = $dbh->prepare($sql);
    $stmt->execute();

}
catch (PDOException $e) {
    echo $e, "\n";
    exit();
}

// some code to use the valid $stmt object
?>

There are two places where that code will issue an exception:
  1. if a connection to the db fails, which it shouldn't
  2. if the column bar doesn't exit of table foo doesn't exist
     which should exist (unless the DBA decides to rename the table
     or column.

After the catch statement, I know that $stmt is going to be valid
and can check for valid results or not.

The use of the try catch is to ensure that something that is
suppose to happen 100% of the time succesfully, if it doesn't we
have an exceptional case and should bail out in a friendly
manner.

Curt.
--
cat .signature: No such file or directory

attached mail follows:

mr php wrote:

> Hello
> Is it good to use exception handling for error handling or I should use
> only for exceptions?
> For example:
> Is it good to throwing user input errors with throw new Exception().
> Thanks

Hello,

I would also go by keeping them separate; it helps both in logic-flow, and
maintenence. Not to mention, exception handlers are design to do just that
- handle exceptions.

Regards,
Christian

attached mail follows:

Hello, Sir:
   
  I just installed PHP with pdflib :
  --------------------------------------------------------------------
  PHP-4.4.1
  pdflib PDFlib GmbH Version 6.0.2
  pdflib PECL Version 2.0.3
  apache 1.3.34
   
  in Liunx FC1.
  ----------------------------------------------------------------------
   
  When I run the script , I got the error messages as following:
   
  ---------------------------------------------------------------------------------------------------------
  Fatal error: pdf_show_boxed(): [2102] PDF_show_boxed: Function not supported for 'CID' in /home/apache/htdocs/004.php on line 8
---------------------------------------------------------------------------------------------------------
   
  Some thing wrong with this function at the 8th parameter, I think:
>>>>>>pdf_show_boxed($pdf,$text,50,650,150,100,'right','');
   
  if I remove the 8th parameter, It would tell me :
  ---------------------------------------------------------------------------------------------------------
  Warning: pdf_show_boxed() expects exactly 8 parameters, 7 given in /home/apache/htdocs/004.php on line 8
---------------------------------------------------------------------------------------------------------
  What should I do?
  Thanks form Any help.
   
  ###########################################################
  The code:
  ###########################################################
    $pdf = PDF_new();
   pdf_open_file($pdf,"");
   pdf_begin_page($pdf,595,842); //a4
   $font = pdf_findfont($pdf,"MSung-Light","ETen-B5-H",0);
   pdf_setfont($pdf,$font,12);
   $text="MY TEST WORD";
   pdf_show_boxed($pdf,$text,50,650,150,100,'right','');
   pdf_end_page($pdf);
   pdf_close($pdf);
    $buffer=pdf_get_buffer($pdf);
  $leng = strlen($buffer);
    header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
  header("Content-type: application/pdf; charset: big5");
  header("Content-Length: $leng");
  header("Content-Disposition: inline; filename=hello.pdf");
  print($buffer);
  pdf_delete($pdf);

___________________________________________________ ³Ì·sª© Yahoo!©_¼¯§Y®É³q°T 7.0¡A§K¶Oºô¸ô¹q¸Ü¥ô§A¥´¡I http://messenger.yahoo.com.tw/

attached mail follows:

On Sat, Dec 03, 2005 at 10:00:14PM -0500, Michael B Allen wrote:
> The following code works but I'm a little new to PHP and I'd like to
> know if there are better ways to achive the same thing.
>
> In the below form example, if the user supplies one or more fields but
> not all that are required, the form is redisplayed but fields that were
> supplied are prepopulated and the ones that are required but are missing
> are highlighted in red.
>
> Can anyone recommend a better technique or elighten me about features of
> the language that I've missed?
>
> Mike
>
> <html>
> <body>
>

> <?php
> $set = 0;
> $username = "";
> $password = "";
>
> if (isset($_POST['username'])) {
> $username = trim($_POST['username']);
> if (strlen($username) > 0) {
> $set |= 0x01;
> }
> }
> if (isset($_POST['password'])) {
> $password = trim($_POST['password']);
> if (strlen($password) > 0) {
> $set |= 0x02;
> }
> }
> if (($set & 0x03) == 0x03) {
> echo "Logging in with: " . $username . ':' . $password;
> } else {
> ?>
>
> <form action="login.php" method="post">
> <table>
> <tr><td colspan="2">Login:</td></tr>
> <tr><td>Username:</td>
>
> <?php
> if ($set != 0 && ($set & 0x01) == 0) {
> echo "<td bgcolor=\"#ff0000\">";
> } else {
> echo "<td>";
> }
> echo "<input type=\"username\" name=\"username\" value=\"" . $username . "\"/>";
> ?>
>
> </td></tr>
> <tr><td>Password:</td>
>
> <?php
> if ($set != 0 && ($set & 0x02) == 0) {
> echo "<td bgcolor=\"#ff0000\">";
> } else {
> echo "<td>";
> }
> ?>
>
> <input type="password" name="password"/>
> </td></tr>
> <tr><td colspan="2"><input type="submit" value="Login"/></td></tr>
> </table>
> </form>

<style>
  .errored {
    color: #FF0000;
  }
</style>
<?php
     $set_class = array(0 => '', 1 => 'errored');
     define('SET_USERNAME', 0x01);
     define('SET_PASSWORD', 0x02);
     define('SET_ALL', SET_USERNAME & SET_PASSWORD);
     $set = 0;
     $username = "";
     $password = "";

     if (isset($_POST['username'])) {
         $username = trim($_POST['username']);
         if (strlen($username) > 0) {
             $set |= SET_USERNAME;
         }
     }
> ...
     if (($set & SET_ALL) == SET_ALL) {
         echo "Logging in with: " . $username . ':' . $password;
     } else {
 ?>
<form action="login.php" method="post">
<table>
<tr><td colspan="2">Login:</td></tr>
<tr><td>Username:</td>
<?php
  $class = $set_class[ $set & SET_USERNAME ];
  echo "<td class="$class">
  echo "<input type=\"username\" name=\"username\" value=\"" . $username . "\"/>";
> ...

It might be a bit overkill for such a simple thing.. but heck.. i
was bored :)

Curt.
--
cat .signature: No such file or directory

attached mail follows:

On Sun, 4 Dec 2005 11:44:12 -0800
Curt Zirzow <czirzowgmail.com> wrote:

> <style>
> .errored {
> color: #FF0000;
> }
> </style>
> <?php
> $set_class = array(0 => '', 1 => 'errored');
> define('SET_USERNAME', 0x01);
> define('SET_PASSWORD', 0x02);
> define('SET_ALL', SET_USERNAME & SET_PASSWORD);
> $set = 0;
> $username = "";
> $password = "";
>
> if (isset($_POST['username'])) {
> $username = trim($_POST['username']);
> if (strlen($username) > 0) {
> $set |= SET_USERNAME;
> }
> }
> > ...
> if (($set & SET_ALL) == SET_ALL) {
> echo "Logging in with: " . $username . ':' . $password;
> } else {
> ?>
> <form action="login.php" method="post">
> <table>
> <tr><td colspan="2">Login:</td></tr>
> <tr><td>Username:</td>
> <?php
> $class = $set_class[ $set & SET_USERNAME ];
> echo "<td class="$class">
> echo "<input type=\"username\" name=\"username\" value=\"" . $username . "\"/>";
> > ...
>
> It might be a bit overkill for such a simple thing.. but heck.. i
> was bored :)

Interesting. This gives me some ideas. I'm also happy to know I wasn't
too far off :->

Thanks,
Mike

attached mail follows:

On Sat, Dec 03, 2005 at 10:17:59PM -0700, Dan wrote:
> Yes that does work but the return path and my mail headers still show
> the main domain. My point is that PHP should be acessing my SMTP
> server specified but it is using the default local host instead.

If you note at php.net/mail that the SMTP setting is only for
windows. Under *nix only as current installed MTA like sendmail can
be used.

you can set your sendmail_path to pass parameters like :
  /sbin/sendmail -f mesomehost.com

Curt.
--
cat .signature: No such file or directory

attached mail follows:

On Fri, Dec 02, 2005 at 07:21:43PM -0500, Chris Shiflett wrote:
> Hi Peter,
>
> >When I begin session with session_start() PHP sets an Expired-header.
> >I suppose that's fine for the sake of unwanted caching.
> >
> >Unfortunately, Firefox seem to reload a page that's expired when using
> >the browser's "Back" navigation instead of showing the page as it was
> >as the user left it.
>
> You might find this article helpful:
>
> http://shiflett.org/articles/guru-speak-nov2004
>
> I don't really fault Firefox for abiding by the no-store directive, nor
> do I fault Internet Explorer for ignoring it.

iirc, Firefox 1.5 has improved its caching system, in paticular to the
back button drama.

Curt.
--
cat .signature: No such file or directory

attached mail follows:

On Fri, Dec 02, 2005 at 11:53:13AM +0200, Mehmet Fatih AKBULUT wrote:
> hi all.
> i installed php5_extensions on my system (Freebsd5.4)
> please look the lines below and tell me where i am doing something wrong.
>
> [rootlocalhost] -> [~]#php /*hit the tab*/
> php php-config phpize
> [rootlocalhost] -> [~]#php
>
> a simple php code:
>
> [rootlocalhost] -> [~]#cat first.php
> <%php
> echo "Hello World!";
> %>
> [rootlocalhost] -> [~]#
>
> /* chmod a+x first.php*/
>
> when trying to run the code :
>
> [rootlocalhost] -> [~]#php first.php
> PHP Warning: Method panda::__set() must take exactly 2 arguments in Unknown
> on line 0

According to the code you cat'ed there is no panda object that is
defined so my first assumption is that you have a file that is set
in your php.ini:
  auto_prepend_file=/some/panda.php

> Segmentation fault (core dumped)

Even at that, this core dump shouldn't be happening. I'm assuming
you installed this via ports. There are two thing i can think of
that should be checked before getting a backtrace:

  1) are you uptodate on your ports? have you done a cvsup
     recently?
  2) what does 'php -v' say?

Curt.
--
cat .signature: No such file or directory

attached mail follows:

hi Curt.
for the first question :
yes i always do the things below:

#portupgrade -arR
and
#cvsup -g -L 2 /etc/por...
i mean yes my ports up to date.

and for the second :

rootlocalhost# php -v
Segmentation fault (core dumped)
rootlocalhost# php-config --version
5.0.5
rootlocalhost#
dont know how to solve this troublesome problem.

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