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> Tips N Tricks, Add anything of value
Rush
post Jun 18 2004, 03:20 AM
Post #1


wild bastard
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Post anything that could be of value to other coders.

Heres a start

CODE

<%
<?
<?php


are all usable tags but the most generally accepted and prefered tag is
CODE

<?php


So to prevent any bad habits , start using the correct tags now and prevent yourself from using the other tags by editting php.ini and turn short tags off and turn asp style tags off.

Other coders will appreciate this.


--------------------
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Vault9
post Jun 18 2004, 03:20 AM
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DocterMoo
post Jun 18 2004, 04:31 AM
Post #2


bovine satisfaction
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variable tips by o-juice and Relic Viper.

QUOTE(o-juice)
if (!empty($_GET)) {
extract($_GET);
} else if (!empty($HTTP_GET_VARS)) {
extract($HTTP_GET_VARS);
}
if (!empty($_POST)) {
extract($_POST);
} else if (!empty($HTTP_POST_VARS)) {
extract($HTTP_POST_VARS);
}


QUOTE(Relic Viper)
  if(phpversion() >= "4.2.1") {
     extract($_POST);
     extract($_GET);
     extract($_SERVER);
     extract($_SESSION);
     extract($_COOKIE);
     extract($_FILES);
     extract($_ENV);
     extract($_REQUEST);
     if ($_GLOBALS !=""){
        extract($_GLOBALS);
     }
  }


These two snippets will solve problems brought about by coding with register globas on, and moving into an environment where it is off.


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themoo badc0de rkki
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fx
post Jun 18 2004, 04:56 AM
Post #3


Lilium Inter Spinas
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Snippet from the latest Mars&Venus code - just something I wrote to neatly return a nice display from a SQL TIMESTAMP

CODE
function sqltime($timestamp){ //quick fx badc0de to ease up sql time
  return( substr($timestamp, 8, 2) . ':' . substr($timestamp, 10, 2) . ' ' .
       substr($timestamp, 6, 2) . '/' . substr($timestamp, 4, 2) . '/' . substr($timestamp, 2, 2) );
}


call it like so - $nicetime=sqltime($messytime);


--------------------
Dave Raven - my blog on SEO, life, PHP, the internet, cryptology, and whatever else
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Qix
post Aug 19 2004, 10:43 AM
Post #4


:o 'o' o:
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Magic quotes gpc, automatically adds " 's to strings, thats why with some sites... any "'s, have \'s or something... its bugging

Just remember, if you do disable it... any strings you send to a database MUST have slashes
So: 'SELECT * FROM '.$table.' WHERE x=4'
Should become: 'SELECT * FROM '.addslashes($table).' WHERE x = 4'

Anyway, the removal script
(Only runs when it is activated)
CODE

/*----------------------------------------------
           MAGIC QUOTES DISABLER
 
hopefully this file is included before
          anything else
----------------------------------------------*/
// ah... before we do anything, kill teh magic_quotes -- YAY
function StripSlashArray_Deep(&$array)
{
foreach ($array as $key=>$value)
{
 if (is_array($value))
 {
  StripSlashArray_Deep($array[$key]);
 }else if (is_string($value))
 {
  $array[$key] = stripslashes($value);
 }
}
}
if (get_magic_quotes_gpc()) // The php manual warns us... this wont work with magic_quotes_sybase
{
// Trust that its off =/
StripSlashArray_Deep($_GET);
StripSlashArray_Deep($_POST);
StripSlashArray_Deep($_COOKIE);
}
set_magic_quotes_runtime(0);
/*----------------------------------------------
           MAGIC QUOTES DISABLED
 
yay, they all gone, now you can use
  addslashes in safety...
----------------------------------------------*/


--------------------
Lusion Technologies - International Hosting / Web Design
qixMedia - Home Theatre PC Manager
qixGames - PC Games (only one, written ages ago... hoping to add more)
GamerNET - Monthly LAN's in CT
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zaMob
post Oct 19 2004, 11:50 PM
Post #5


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ternary operators : a nice way to get around ugly if(){}else{} statements...

you can use a ternary operator like this:
CODE
strlen($string)>10 ? $var=$greaterVar : $var=$smallerVar;

instead of going about it this way:
CODE
if(strlen($string)>10){
 $var = $greaterVar;
 }
else{
 $var = $smallerVar;
 }


this is how it works:
condition ? value_if_true : value_if_false;
if "condition" is true, the expression will equal "value_if_true". If not, it will equal "value_if_false".


--------------------
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cyberWaste
post Mar 8 2005, 03:20 AM
Post #6


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use
CODE
$text = file_get_contents($filePath);

to get the contents of a text file instead of
CODE
$fp = fopen($filePath, "r");
$data = fread($fp, 1024);
$text = nl2br($data);
fclose($fp);


this is a feature added in newer versions of PHP.


--------------------
...only dead fish go with the flow.
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Pulse
post Mar 17 2005, 05:20 AM
Post #7


~Pulsage~
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Here is a link that some of you PHP programmers would find interesting, replacing single quotes with double quotes,

sounds rediciously, but read first ... hehe

SitePoint link

Pulse

This post has been edited by Pulse: Mar 17 2005, 05:21 AM


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Relic Viper
post Mar 17 2005, 06:30 AM
Post #8


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ever tried to make a multiple selection dropdown box ?

well here is one

CODE
<?
if (isset($sub)) {
  for ($x=0;$x<count($sel);$x++) {
     echo $sel[$x]."<br>\n";
  } // end for

echo '<br>';
}
?>
<html>
<title>Multi Select Dropdown Box</title>
<body>
 <form method="POST" name="frm">
        <select size="6" name="sel[]" multiple="multiple">
           <option value='1'>1</option>
           <option value='2'>2</option>
           <option value='3'>3</option>
           <option value='4'>4</option>
           <option value='5'>5</option>
           <option value='0'> ------------- </option>
        </select>
  <input type="submit" name="sub">
 </form>
</body>
</html>
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Qix
post Mar 17 2005, 10:31 AM
Post #9


:o 'o' o:
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PNG Semi-Transparent images are, err useful ?
They can be really useful, but unfortunately they dont work in Internet Explorer...

Since most of the market, is internet explorer based, there is a neat javascript based fix

http://homepage.ntlworld.com/bobosola/pnghowto.htm
Try it smile.gif

And while you at it, sign the petition to get Microsoft to add proper PNG support
http://www.petitiononline.com/msiepng/petition.html

Heres an, err, sample image ?
Taken from the site listed above, transparent pngs rawk. punk.gif
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fx
post Mar 25 2005, 08:00 AM
Post #10


Lilium Inter Spinas
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I wrote this recently - please gimme feedback on the site and feel free to suggest additions - otherwise, if you looking for tips on SEO its really worth a read!
Guide to SEO
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Britz
post Dec 9 2005, 07:24 AM
Post #11


Advanced Member
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From: Durban South Africa
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QUOTE(zaMob @ Oct 20 2004, 08:50 AM) *

ternary operators : a nice way to get around ugly if(){}else{} statements...

you can use a ternary operator like this:
CODE
strlen($string)>10 ? $var=$greaterVar : $var=$smallerVar;

instead of going about it this way:
CODE
if(strlen($string)>10){
 $var = $greaterVar;
 }
else{
 $var = $smallerVar;
 }


this is how it works:
condition ? value_if_true : value_if_false;
if "condition" is true, the expression will equal "value_if_true". If not, it will equal "value_if_false".


zaMob you got it all wrong
CODE
strlen($string)>10 ? $var=$greaterVar : $var=$smallerVar;

should be
CODE
$var = strlen($string)>10 ? $greaterVar : $smallerVar;

thats what the ternary operator is about


--------------------
Recursion /ree-ker'-zhon/: See Recursion.
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