Re: [PHP] How to protect the source code.
On Friday 19 November 2010, Hans Åhlin wrote: > Hi Hello, > Does any one know if there is any way for me to protect my source code > without the requirement of a extension being installed on the server? > i.e encryption, obfusicator, script library, compile the code. You can use some proprietary tools like Zend Accelerator and ionCube: http://en.wikipedia.org/wiki/List_of_PHP_accelerators Also, Zend Optimizer is good tool. Those encoders do not require extension instalation on the server, once you /encode/ the source code, the encoder itself provides of third party libraries, where the only requirement is to have dl() enabled. > > Any idea is appreciated. > > Thanks / Hans > > > ** > Hans Åhlin >Tel: +46761488019 >icq: 275232967 >http://www.kronan-net.com/ >irc://irc.freenode.net:6667 - TheCoin > ************** Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] curl and variable parameters in hyperlink
On Wednesday 24 November 2010,
"Bob Keightley" wrote:
> I already have a curl script that gets the web page, but it doesn't pass
> the parameters
Hello Bob,
>
> Being new to PHP I haven't the first idea how to modify it so that it
> does.
>
> Script is as follows:
>
> $url = "http://www.xx.com/query.asp?param1=val1¶m2=val2";;
>
> foreach ($_POST as $key=>$post) {
> $post=str_replace(" ", "+", $post);
> $url.=$key."=".$post."&";
> }
Instead of concatenating strings, I suggest to use the http_build_query()
function:
'val1',
'param2' => 'val2',
'param3' => 'val3');
$query = http_build_query($data);
echo "Query: {$query}\n";
?>
So, to create a query string based on your $_POST request parameters,
you just need to use the function as follows:
This will create the proper query string to be used on your URL.
>
> $ch = curl_init($url);
> curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
> curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
> $data = curl_exec($ch);
> curl_close($ch);
>
> $data=str_replace('.asp', '.php', $data);
> echo $data;
>
> This returns the web page, but ignores val1 and val2 which are necessary
> to execute the query.
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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Re: [PHP] Disk IO performance
On Sunday 28 November 2010, Larry Garfield wrote: > There are many things that everybody "knows" about optimizing PHP code. > One of them is that one of the most expensive parts of the process is > loading code off of disk and compiling it, which is why opcode caches > are such a bit performance boost. The corollary to that, of course, is > that more files = more IO and therefore more of a performance hit. It depends on the implementation that PHP uses to open the file. For example on Linux and similar operating systems, PHP uses the mmap(2) function instead of read(2) or fread(2) functions, so it maps the complete file into memory, that is more faster than using partial file reads. > > But... this is 'effin 2010. It's almost bloody 2011. Operating systems > are smart. They already have 14 levels of caching built into them from > hard drive micro-controller to RAM to CPU cache to OS. I've heard from > other people (who should know) that the IO cost of doing a file_exists() > or other stat calls is almost non-existent because a modern OS caches > that, and with OS-based file caching even reading small files off disk > (the size that most PHP source files are) is not as slow as we think. Yes, that's true. This point depends on how the operating system has implemented it's VFS. Linux, FreeBSD and other platforms, have a well done implementation of VFSs, so they have a good cache implementation for concurrent reads, and first read on a file is made /hard/, then it uses the cached file location (inode data). > > Personally, I don't know. I am not an OS engineer and haven't > benchmarked such things, nor am I really competent to do so. However, > it makes a huge impact on the way one structures a large PHP program as > the performance trade- offs of huge files with massive unused code (that > has to be compiled) vs the cost of reading lots of separate files from > disk (more IO) is highly dependent on the speed of the aforementioned IO > and of compilation. You can do your own benchmarks tests, from high level perspective or low level perspective. If you want to trace performance on how PHP reads files from the hard drive, you can use some extensions like xdebug. For example if you prefer to use require() and include(), instead of require_once() and include_once() for concurrent reads, probably you will get a lower performance because you will do real concurrent reads on certain files. > > So... does anyone have any actual, hard data here? I don't mean "I > think" or "in my experience". I am looking for hard benchmarks, > profiling, or writeups of how OS (Linux specifically if it matters) file > caching works in 2010, not in 1998. Well, it also depends on the operating system configuration. If you just want to know the performance of IO functions on PHP, I suggest to use an extension like xdebug. It can generate profiling information to be used with kcachegrind, so you can properly visualize how are working IO functions in php. Probably a mmap(2) extension for PHP would be useful for certain kind of files. The file_get_contents() function uses open(2)/read(2), so you can't do a quick on a file. > > Modernizing what "everyone knows" is important for the general community, > and the quality of our code. > > --Larry Garfield Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] Disk IO performance
On Monday 29 November 2010, Per Jessen wrote: > Daniel Molina Wegener wrote: > > On Sunday 28 November 2010, > > > > Larry Garfield wrote: > >> There are many things that everybody "knows" about optimizing PHP > >> code. One of them is that one of the most expensive parts of the > >> process is loading code off of disk and compiling it, which is why > >> opcode caches > >> are such a bit performance boost. The corollary to that, of course, > >> is that more files = more IO and therefore more of a performance hit. > >> > > It depends on the implementation that PHP uses to open the file. For > > > > example on Linux and similar operating systems, PHP uses the mmap(2) > > function instead of read(2) or fread(2) functions, so it maps the > > complete file into memory, that is more faster than using partial file > > reads. > > I doubt if a read(file,1Mb) and an mmap(file,1Mb) will be very > different. The file has got to be hauled in from disk regardless of > which function you choose. Well, they are different. That's why some php functions and a wide variety of language implementations are using mmap(2) instead of read(2) to read files from the hard drive for inclusion or module importing. Also Apache uses sendfile(2) and mmap(2) when they are available on the platform because are more faster than read(2). You just can trace how php loads certain modules when you call include(), require(), include_once() and require_once(). Also Python, Perl and other languages have a similar implementation when they are loading modules. read(2) depends on the VFS blocksize, which is used as the maximum unit for chunk reads, mmap(2) not. Just check the PHP source code or run an strace(1) over php loading modules and check which function is used to read inclusions. Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] Form Processing
On Monday 29 November 2010,
"Ron Piggott" wrote:
> I am unable to retrieve the value of $referral_1 from:
That's very simple, you are missing the name attribute for
your input elements, for example:
Should be:
Please read the following links:
HTML Standards:
http://www.w3.org/standards/webdesign/htmlcss
PHP Manual:
http://cl.php.net/manual/en/
>
> $new_email = mysql_escape_string ( $_POST['referral_$i'] );
>
> why?
>
> PHP while lopp to check if any of the fields were populated:
>
>
>
> $i=1;
> while ( $i <= 5 ) {
>
> $new_email = mysql_escape_string ( $_POST['referral_$i'] );
>
> if ( strlen ( $new_email ) > 0 ) {
>
> }
>
> }
>
>
> The form itself:
>
>
>
>
> maxlength="60" class="referral_1" style="width: 400px;">
>
> maxlength="60" class="referral_2" style="width: 400px;">
>
> maxlength="60" class="referral_3" style="width: 400px;">
>
> maxlength="60" class="referral_4" style="width: 400px;">
>
> maxlength="60" class="referral_5" style="width: 400px;">
>
> name="submit" value="Add New Referrals">
>
>
>
>
> What am I doing wrong?
>
> Ron
>
> The Verse of the Day
> “Encouragement from God’s Word”
> http://www.TheVerseOfTheDay.info
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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Re: [PHP] Form Processing
On Monday 29 November 2010,
"Ron Piggott" wrote:
> I am unable to retrieve the value of $referral_1 from:
Sorry, I did't see the name=email attribute. It should be
name="email[]", and you will get the data from the
$_REQUEST['email'] variable or $_POST['email'] as array.
If you want detailed information on which variables are
submited to your PHP script, you can do
var_dump($_REQUEST);
or
echo var_export($_REQUEST);
And be careful of doing var_dump() or var_export() over
the $GLOBALS variable (turn off register_globals).
>
> $new_email = mysql_escape_string ( $_POST['referral_$i'] );
>
> why?
>
> PHP while lopp to check if any of the fields were populated:
>
>
>
> $i=1;
> while ( $i <= 5 ) {
>
> $new_email = mysql_escape_string ( $_POST['referral_$i'] );
>
> if ( strlen ( $new_email ) > 0 ) {
>
> }
>
> }
>
>
> The form itself:
>
>
>
>
> maxlength="60" class="referral_1" style="width: 400px;">
>
> maxlength="60" class="referral_2" style="width: 400px;">
>
> maxlength="60" class="referral_3" style="width: 400px;">
>
> maxlength="60" class="referral_4" style="width: 400px;">
>
> maxlength="60" class="referral_5" style="width: 400px;">
>
> name="submit" value="Add New Referrals">
>
>
>
>
> What am I doing wrong?
>
> Ron
>
> The Verse of the Day
> “Encouragement from God’s Word”
> http://www.TheVerseOfTheDay.info
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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Re: [PHP] excel and word files to HTML
On Monday 29 November 2010, "464450826" <464450...@qq.com> wrote: > Hello, Hello... > > I want to convert excel files and word files to HTML. > Which php class could I use for this task? > tks Try the PEAR libraries: Excel: http://pear.php.net/search.php?q=excel&in=packages&x=0&y=0 Probably you need to use an OpenOffice instance and some macros if you want more effective results. > > best regards, > Leilei Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] http request
On Sunday 05 December 2010, Moses wrote: > Hi Everyone, Hello... > > I would like to know whether there is a http request PHP script. I > would like to use in cases where a background script is running for > sometime and outputs the results in PHP once the script has been > executed. You can try cURL: http://php.net/manual/en/book.curl.php > > > Thanks. > > musa Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
Re: [PHP] sending email
On Wednesday 15 December 2010, Marc Fromm wrote: > When I use the mail function on a linux server, how is the email sent? > Does sendmail act alone or does it use SMTP? sendmail itself (or the replacement install, probably postfix or qmail) is an MTA itself, so... it do not requires an SMTP server. You need to use SMTP server, you can try phpmailer, swift mailer and related packages third party PHP libraries. You will need them, for example, if your SMTP server requires authentication. > > Thanks > > Marc Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] How does one reply to messages on this list?
On Thursday 16 December 2010, Sam Smith wrote: > If I just hit 'Reply' I'll send my reply to the individual who created > the message. If I hit 'Reply All' my reply will be sent to: Govinda < > govinda.webdnat...@gmail.com>, PHP-General List > and the creator of the message. > > Neither option seems correct. What's up with that? If your MUA (or email client) is smart enough, it should have at least "Reply", "Reply to Sender", "Reply to All" and "Reply to Mailing List". Here I have all those options. > > Thanks Best regards, -- Daniel Molina Wegener System Programmer & Web Developer Phone: +56 (2) 979-0277 | Blog: http://coder.cl/ signature.asc Description: This is a digitally signed message part.
Re: [PHP] session_id() is not passed to the next page
On Tuesday 04 January 2011,
Michelle Konzack wrote:
> Hello,
Hello...
>
> I am rewriting currently a login script and I encountered a problem with
> sessions. While reading the two pages
>
> <http://php.net/manual/de/function.session-start.php>
> <http://bugs.php.net/bug.php?id=14636>
Well, probably this is not a problem of PHP. You must try looking at
your page errors. The PHP session mechanism tries to write some headers
with the session ID (a cookie).
>
> I have not found a solution for my problem:
>
> 8<--
> function fncLogin($user, $pass, $redirect, $type='pam') {
>
> if ($user != '' and $pass != '') {
>
> $TEXT = "Error />\n"; $TEXT .= "\n";
> $TEXT .= "The username does not exist or the password is wrong. />\n"; $TEXT .= "\n";
> $TEXT .= "Please go "\">back and try it again.\n";
>
> if ($type == 'pam') {
>
> if (pam_auth($user, $pass, &$PAM_ERR) === FALSE) {
> fncError('2', $TEXT, $errpage='false');
> exit();
> }
>
> } elseif ($type == 'shadow') {
>
> $shadow_file = DIR_HOST . "/.shadow";
> if (is_file($shadow_file)) {
>
> $SHADOW = exec("grep \"^" . $user . ":\" " . DIR_HOST . "/.shadow
> |cut -d: -f2"); if (empty($SHADOW)) {
> }
>
> $SALT=exec("grep \"^$user:\" " . DIR_HOST . "/.shadow |cut -d:
> -f2 |cut -d$ -f1-3"); $ENCRYPTED=crypt($pass, $SALT);
> if ($SHADOW != $ENCRYPTED) {
> fncError('2', $TEXT, $errpage='false');
> exit();
> }
>
> } else {
> $TEXT = "Error />\n"; $TEXT .= "\n";
> $TEXT .= "This is a system error. I can not authenticate du to a
> missing config.\n"; $TEXT .= "\n";
> $TEXT .= "Please inform the "\">sysadmin and try it later again.\n"; fncError('1', $TEXT,
> $errpage='false');
> exit();
> }
> }
>
> session_register('sess_user');
> session_register('sess_timeout');
> $sess_user= $user;
> $sess_timeout = time() + 900;
> session_write_close();
> header("Location: " . $redirect);
> }
> exit();
> }
> 8<--
>
> which call the following page correctly, but the two vars $sess_user and
> $sess_timeout are empty.
>
> Can someone please tell me how to do this?
Did you tried working with error_reporting(E_ALL) and looking if you have
the well known warning "headers already sent"?. Try to work with
error_reporting(E_ALL), instead of hiding errors. If you get that warning
or error means that the cookie for session id was not written, so you can't
handle the session id on the next page...
Try using session_start() as the very first call or session.auto_start = 1
in your php.ini (which is not recommended).
>
> Thanks, Greetings and nice Day/Evening
> Michelle Konzack
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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Re: [PHP] Flexible application plugin architecture, is this possible?
On Monday 03 January 2011,
Mike wrote:
> I'm trying to design a powerful plugin system that doesn't require any
> (or extremely little) modification to my existing large code base. Hook
> based systems unfortunately don't seem to meet this requirement.
OK, that is a design problem...
>
> Is something like this possible in PHP?
>
> //Magic function I made up, similar to __call(),
> //only it replaces "new $class" with its own return value.
> function __instantiate( $class, $args ) {
> $plugin_class = $class.'Plugin';
>
> if ( file_exists( 'plugins/'.$plugin_class.'.php' ) {
> $obj = new $plugin_class($args);
> return $obj;
> } else {
> return new $class($args);
> }
> }
>
> class MainClass {
> function doSomething( $args ) {
> echo "MainClass doSomething() called...\n";
> }
> }
>
> class MainClassPlugin extends MainClass {
> function doSomething( $args ) {
> echo "MainClassPlugin doSomething() called...\n";
>
> //Modify arguments if necessary
> echo "MainClassPlugin modifying arguments...\n";
>
> $retval = parent::doSomething( $args );
>
> //Modify function output, or anything else required
> echo "MainClassPlugin post filter...\n";
>
> return $retval;
> }
> }
>
> $main_class = new MainClass();
> $main_class->doSomething( 'foo' );
>
> Results:
> MainClassPlugin doSomething() called...
> MainClassPlugin modifying arguments...
> MainClass doSomething() called...
> MainClassPlugin post filter...
>
> I realize PHP doesn't have this magical "__instantiate" function, but
> does it have any similar mechanism that would work to automatically
> load alternate classes, or have a class dynamically overload
> itself during runtime?
Well, you can do this using abstract classes and interfaces. Also
you must try the autoloader:
http://php.net/manual/en/language.oop5.autoload.php
Probably this will help you a lot.
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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Re: [PHP] array to var - with different name
On Thursday 20 January 2011,
Donovan Brooke wrote:
> Hello again!
>
> I'm trying to find a good way to convert array key/value's to
> variable name values... but with the caveat of the name being
> slightly different than the original key
> (to fit my naming conventions).
>
> first, I (tediously) did this:
>
> ---
> if (isset($_GET['f_action'])) {
>$t_action = $_GET['f_action'];
> }
>
> if (isset($_POST['f_action'])) {
>$t_action = $_POST['f_action'];
> }
>
> if (isset($_GET['f_ap'])) {
>$t_ap = $_GET['f_ap'];
> }
>
> if (isset($_POST['f_ap'])) {
>$t_ap = $_POST['f_ap'];
> }
> ---
>
> Instead, I wanted to find *all* incoming "f_" keys in the POST/GET
> array, and convert them to a variable name consisting of "t_" in one
> statement.
That was ver tedious...
>
> I then did this test and it appears to work (sorry for email line
> breaks):
>
> -
> $a_formvars = array('f_1' => '1','f_2' => '2','f_3' => '3','f_4' =>
> '4','f_5' => '5','f_6' => '6',);
>
> $t_string = "";
> foreach ($a_formvars as $key => $value) {
>if (substr($key,0,2) == 'f_') {
> $t_string = $t_string . "t_" . substr($key,2) . "=$value&";
> parse_str($t_string);
>}
> }
> -
>
> I figure I can adapt the above by doing something like:
>
> $a_formvars = array_merge($_POST,$_GET);
>
> However, I thought I'd check with you all to see if there is something
> I'm missing. I don't speak PHP that well and there may be an easier way.
Did you tried the $_REQUEST variable?
Take a look on:
>
> Thanks,
> Donovan
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
Re: [PHP] mysql_num_rows()
On Tuesday 22 February 2011,
"Gary" wrote:
> Can someone tell me why this is not working? I do not get an error
> message, the results are called and echo'd to screen, the count does not
> work, I get a 0 for a result...
Are you sure that the table is called `counties` and not `countries`?
:)
>
>
>
> $result = mysql_query("SELECT * FROM `counties` WHERE name = 'checked'")
> or die(mysql_error());
>
> if ( isset($_POST['submit']) ) {
> for($i=1; $i<=$_POST['counties']; $i++) {
> if ( isset($_POST["county$i"] ) ) {
> echo "You have chosen ". $_POST["county$i"]." ";
> }
> }
> }
>
> $county_total=mysql_num_rows($result);
>
> while($row = mysql_fetch_array($result))
> {$i++;
> echo $row['name'];
> }
> $county_total=mysql_num_rows($result);
> echo "$county_total";
>
> echo 'You Have ' . "$county_total" . ' Counties ';
>
> ?>
Best regards,
--
Daniel Molina Wegener
System Programmer & Web Developer
Phone: +56 (2) 979-0277 | Blog: http://coder.cl/
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