Jump to content

phprocker

Members
 View Profile  See their activity

  • Posts

    91

  • Joined

  • Last visited

    Never

 Content Type 

Posts posted by phprocker

    Undefined Argument Warnings

    in PHP Coding Help

    Posted

    Hey all. I have a function called displayForm in a form validation script. This function accepts a few arguments but these arguments are empty upon initial calling of the function. One of the arguments is and errors array that only gets populated if there were form errors.

     

    So upon running my script initially I get missing argument Warnings.

     

    Can these warnings simply be ignored? Would they cause problems throughout my script if I ignore these warnings? And how can I suppress these warnings if I would like to?

     

    Thanks all for your help.

     

    Cheers.

    Best Way To Check If Form Field Is Set?

    in PHP Coding Help

    Posted

    Hey all. What is the best way to check if a form field has been entered by the user? Because a field left blank by the user still shows up as set with the isset function.

     

    Example:

    if (isset($_POST['name']))
{
echo "The field is set";
}

     

    This is a problem if I'm checking if the user has skipped over the name field on a form because an empty value gets passed to the POST array even if the field is left blank.

     

    Do people use empty or a regular expression instead?

     

    Cheers!

    Best Login System Practice?

    in PHP Coding Help

    Posted

    Hey all.  I was curious what is the best practice when creating a user login system? I've seen them done in the following 2 ways.

     

    First I've seen tutorials on logins where after the post data is verified against the database a username session is created and member pages are accessed if the user session is set.

     

    Second I've seen tutorials on logins where the username session is verified against the database on every single page.

     

    What is the best practice along these lines?

     

    Cheers!

    Count characters of words in an array

    in PHP Coding Help

    Posted

    It's late and I'm tired so hopefully I did this right. I think this is what you mean.

     

    $title = "This is an example of a sentence in a paragraph";

$title_array = explode(" ", $title);

foreach($title_array as $value)
{
$count = strlen($value);
echo "The word has " . $count . " characters.<br />";
}

    List as input to DB

    in PHP Coding Help

    Posted

    Here is what I believe you are looking for.

     

    Please note: The following code is a rough draft and meant as a guide. Not for any production site.

     

    <?php

// database variables
$host = "localhost";
$user = "user";
$pass = "pass";

//database connection
$conn = mysql_connect($host, $user, $pass);
mysql_select_db("database", $conn);

// create form to get number of fields
if (!isset($_POST['submit']) && !isset($_POST['formfields']))
{
$form = '<h2>Choose Number Of Items</h2><form method="post" action="' . $_SERVER['PHP_SELF'] . '">
<select style="width:225px" name="formfields">
<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=6>6</option>
<option value=7>7</option>
<option value=8>8</option>
<option value=9>9</option>
<option value=10>10</option>
</select><br /><br />
<input type="submit" name="submit" value="Submit" />
</form>';
}

// generate inputs if user chose number of items
if (isset($_POST['submit']) && $_POST['formfields'] != '')
{
$items = $_POST['formfields'];
$form = "<h2>Enter Your Items</h2>
	     <form method=\"post\" action=\"" . $_SERVER['PHP_SELF'] . "\">";
	     for($in=1;$in<=$items;$in++){
		 if ($in >= 11){
			break;
		 }
		$form .= "<p>Item</p>"
	             . $in . ": <input style=\"width:200px\" type=\"text\" name=\"formvalue[]\" /><br /><br />";
		 } 
$form .= "<input type=\"hidden\" name=\"formfields\" value=\"" . $_POST['formfields'] . "\" />
		   <input type=\"submit\" name=\"submit\" value=\"Submit\" /></form>";
}

//check form items submitted
if (isset($_POST['submit']) && isset($_POST['formvalue']))
{
//check missing user input
foreach($_POST['formvalue'] as $value)
{
	if(!isset($value) || $value == "")
	{
	 	$emptyvalue = TRUE;
	}
}
if ($emptyvalue)
{
	//view if missing user input
	echo $form;
	exit();
}
}	
else 
{
//view if no submit
echo $form;
exit();
}

//step through post array and make safe for sql
foreach($_POST['formvalue'] as $value)
{
$sqlsafe[] = '("' . mysql_real_escape_string($value) . '")';
}

// build query
$query = "INSERT INTO tbl_clients (Calias) VALUES " . implode(",", $sqlsafe);

// insert to database or error
if(!mysql_query($query,$conn))
{
die('Error: ' . mysql_error());
}

// debugging
echo $query;

?>

     

    Please note: Depending on how many items you are allowing users to choose, in the for loop "$in >= 11" must be adjusted.  The current value is for 10 items.

    List as input to DB

    in PHP Coding Help

    Posted

    Let me rephrase my above post to suit your needs.

     

    This line:

    $query = "INSERT INTO tbl_clients (Calias) VALUES " . implode(",", $sqlsafe);

     

    outputs this:

    INSERT INTO tbl_clients (Calias) VALUES ("value1_from_field_1"),("value2_from_field_2"),("value3_from_field_3"),etc,etc,etc....  to how ever many items your user needs.

    List as input to DB

    in PHP Coding Help

    Posted

    Are you referring to something like this?

     

    Notice the form input names. You can have a page that generates fields with a drop down list of numbers.

     

    <?php

// database variables
$host = "localhost";
$user = "user";
$pass = "pass";

//database connection
$conn = mysql_connect($host, $user, $pass);
mysql_select_db("database", $conn);

//check form submitted
if (isset($_POST['submit']))
{
//check missing user input
foreach($_POST['formvalue'] as $value)
{
	if(!isset($value) || $value == "")
	{
	 	$emptyvalue = TRUE;
	}
}
if ($emptyvalue)
{
	//view if missing user input
	$form = "<form method=\"post\" action=\"" . $_SERVER['PHP_SELF'] . "\">
	Value: <input type=\"text\" name=\"formvalue[]\" /><br />
	Value: <input type=\"text\" name=\"formvalue[]\" /><br />
	Value: <input type=\"text\" name=\"formvalue[]\" /><br />
	<input type=\"submit\" name=\"submit\" value=\"Submit\" />
	</form>";

	echo $form;
	exit();
}
}	
else 
{
//view if no submit
$form = "<form method=\"post\" action=\"" . $_SERVER['PHP_SELF'] . "\">
Value: <input type=\"text\" name=\"formvalue[]\" /><br />
Value: <input type=\"text\" name=\"formvalue[]\" /><br />
Value: <input type=\"text\" name=\"formvalue[]\" /><br />
<input type=\"submit\" name=\"submit\" value=\"Submit\" />
</form>";

echo $form;
exit();
}

//step through post array and make safe for sql
foreach($_POST['formvalue'] as $value)
{
$sqlsafe[] = '("' . mysql_real_escape_string($value) . '")';
}

// build query
$query = "INSERT INTO userinput (formvalue) VALUES " . implode(",", $sqlsafe);

// insert to database or error
if(!mysql_query($query,$conn))
{
die('Error: ' . mysql_error());
}

// debugging
echo $query;

?>

     

    Then your form generation page could be something like:

    <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<select style="width:225px" name="formfields">
<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>
</select><br /><br />
<input type="submit" value="Submit" />
</form>

     

    You will have to link the 2 pages together with the appropriate coding if this is what you're trying to achieve.

     

    Redirecting/Including If Array Value Not Set

    in PHP Coding Help

    Posted

    Hey all.  I have a form with inputs "menuitem[]" array.  Upon no user input to one of these fields I want to set a variable error and include the form generation page.

     

    Is my following code a feasible way to do this?

     

    foreach($_POST['menuitem'] as $value)
{
if(!isset($value) || $value == "")
{
 	$emptyvalue = TRUE;
}
}

if ($emptyvalue)
{
$erroralert = "You must fill in all the form fields! Please try again!";	
include "views/addmenus.php";
exit();
}

     

    If works but just a bit unsure about it.

     

    Cheers!

    Check If Array Value Isset

    in PHP Coding Help

    Posted

    Hey all.  I have a page that dynamically creates form input fields called "menuitem[]".

     

    So on the page that checks the values I need to check if any of those fields were not filed in.  My syntax is wrong any help would be great.

     

    test.php

    foreach($_POST['menuitem'] as $key => $value)
{
if(!isset($value) || $value = "")
{
	echo "Please fill in all values. You left key " . $key . "empty.";
}
}

     

    Nothing gets echoed when I leave the fields empty so I'm doing something wrong here.

    $_GET Method Security

    in PHP Coding Help

    Posted

    Hey all. I have a question or two about securing pages that use $_GET method.  $_POST I have a good grasp on but $_GET has some different issues.

     

    If I have a switch that calls on the url to display a proper page, do I need to sanitize that variable before passing it to the switch?

     

    Example:

     

    URL = www.example.com/index.php?page=calendar

     

    // see comments

    $url = $_GET['page'];

// Is this $url variable safe in my script or is there needed sanitation?
switch ($url)
{
case "calendar":
	include "views/calendar.php";
	break;
default:
	include "views/main.php";
}

     

    I was reading about XSS and I had some questions. Can someone just pass a function to the url like mail() and start sending mail from my web page in the above example or steal cookies or anything else? I'm referring to my example above.

     

    Is there any good reading around on the topic of $_GET and security?

     

    Cheers all!

     

    How To Horizontal Align Menu + Date

    in CSS Help

    Posted

    Thanks again for the reply Haku. That did not work unfortunately.

     

    Here is the entire code I'm using on one page.

     

    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Testing</title>

<style>
#header
{
margin-left:auto;
margin-right:auto;
width:998px;	
height:125px;
border:1px solid #006400;
background-image:url('imgs/h_lime.gif');
background-repeat:repeat-x;
}

/* begin menu formatting */

a.menu:link,a.menu:visited
{
margin-top:0px;
float:left;
margin-right:2px;
font-weight:bold;
font-size:0.875em;
color:#F5F5DC;
border:1px solid #006400;
background-color:#008000;
text-align:center;
padding:2px;
text-decoration:none;
}
a.menu:hover,a.menu:active
{
background-color:#91C991;
}
/* end menu formatting */

div.topmenu
{
background-color:#008000;
margin-left:auto;
margin-right:auto;	
width:1000px;		
margin-top:0px;
}

p.date
{
color:#F5F5DC;
padding:3px 10px 3px;
text-align:right;
font-size:0.875em;	
font-weight:bold;
}
/* end display blocks */


</style>
</head>
<body>




<div id="header"></div>

<div class="topmenu">
<a class="menu" href="home.php">HOME</a>
<a class="menu" href="contact.php">CONTACT US</a>
<a class="menu" href="about.php">ABOUT US</a>
<a class="menu" href="blog.php">BLOG</a>
<a class="menu" href="photos.php">PHOTO GALLERY</a>
<p class="date">November 8, 2010</p>
</div>


</body>
</html>

     

    You can see there is roughly 15-20px of white space between the header and the menu when using "float:left;" for the menu.  You will see that if you remove the "float:left;" from the a.menu.link removes the white space but it messes up the date alignment.

     

    I can't figure it out.

    How To Horizontal Align Menu + Date

    in CSS Help

    Posted

    Hey all. I can't seem to figure out how to horizontally align my top menu and the date.  The date always starts on a new line.  I want it aligned horizontally with the top menu and I want it aligned to the right.

     

    Here's what I have.

     

    a.menu:link,a.menu:visited
{
display:inline;
font-weight:bold;
font-size:0.875em;
color:#F5F5DC;
border:1px solid #006400;
background-color:#008000;
text-align:center;
padding:2px;
text-decoration:none;
}

#topmenu
{
background-color:#008000;
margin-left:auto;
margin-right:auto;	
width:1000px;		
margin-top:5px;
height:21px;
}

<div id="topmenu">
<a class="menu" href="index.php">HOME</a>
<a class="menu" href="indexte.php">CONTACT US</a>
<a class="menu" href="indextk.php">ABOUT US</a>
<a class="menu" href="indexh.php">BLOG</a>
<a class="menu" href="indext.php">PHOTO GALLERY</a>
<p>Monday, November 08, 2010</p>
</div>

     

    The date is always on a new line and not aligned to the right.

     

    I want it too look like this:

    HOME CONTACT US  ABOUT US BLOG PHOTO GALLERY                                                              Monday, November 08, 2010

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.