PHP - Scope Of Variables Inside A User-defined Function

hey guys i used defined variables inside my index.php and these defined varaibles are called and used through the site...is this good or bad?

defined varaibles
Code: [Select]
define('DS', DIRECTORY_SEPARATOR);
define('PARENT_DIRECTORY_PATH', dirname(dirname(__FILE__)) . DS);
define('PUBLIC_DIRECTORY', BASE_URL . DS .'public' . DS);
define('PRIVATE_DIRECTORY', BASE_URL .'private' . DS );
thank you

Hello.

I have an array like this:

Code: [Select]
Array
(
    [1] => MOR
    [2] => CON
    [3] => CP1
    [4] => CP2
    [5] => EMAIL
    [6] => NIF
    [7] => BI
    [8] => DIS
)

And then I defined, for example this one variable:

define("DIS","District");

When I try to...


echo $array[8];


All I get is "DIS".

I'm obviously trying to echo a string and it won't work that way... but I still gave it a try. How can I do this then? I need "District" to be outputted instead of the actual variable name.

I know that if I were to "echo DIS;" this would work but that defeats the purpose as I have various defined variables per row...

Thanks.

I have defined my database connection data as constants in a separate file for security reasons.  How can I simply access the data stored in those constants.  I have to call the file to get the value of the constants.  If I inadvertently call the file twice in a script  using an include or require statement, I get an error that I am trying to define the constants again.  Can I somehow just call the constants without including the file where they are defined?

--Kenoli

First off, let me say that this will not be a public use site.  We want to create a site that allows us to run queries in our database; this way we don't need to log into the MySQL server when ever we want to run a query.

Basically, I am trying to create something as simple as a form with a text-input and a submit button.  In this text-input, we will write a query (such as SELECT * FROM xxxx).  When we hit submit, we would like to have the MySQL table printed out in a large textbox below.

Our database has multiple tables, so something that works across the entire database seamlessly is key.

Has anyone ever made anything like this?  Is there another way to go about this?  We really just want an easy way to run queries on the go.

Thanks in advance to anyone who replies!

$(document).ready(function()
{
var uploadObj =	$("#fileuploader").uploadFile({
	url:"upload.php",
	fileName:"myfile",
	});
});

I'm trying to call UploadObj.uploadFile(); on a click event.   Removing the "var" to make the scope global works sort of but also throws errors.   Not sure what to do. Help appreciated.
Edited by anderson_catchme, 06 September 2014 - 05:06 PM.

Hello all, I have some piece of code that is nested like this


$variable = 'This is a global argument';
function parentFunction($variable) {
function childFunction() {
echo 'Argument of the parent function is '.$GLOBALS['variable'];
}
childFunction();
}
parentFunction(5);


What I want to know is - Is there a way to access a variable from the parent function without passing arguments to the child function? (Something like how classes have parent::?). I don't want to use $GLOBALS because it might cause some variable collision, and I didn't want to pass arguments because incase I decide to change the arguments in the parent function I'd have to do it in the child function aswell. From my searching around in the Internet it seems like this is not possible, but if theres a slight chance that there might be something out there, i'm willing to give it a shot .

Thanks in advance

So say I have a file with the contents..

Code: [Select]
; this is a comment
var2 : variable
; another comment
var3 : file.txt


how would I be able to do



<?php

echo $var2; 

?>



That would echo "variable"

and

<?php

$file = file($var3);

?>



So its reading the file to get the variable from the text file and if the line starts with ";" its disregarded..


Thanks

I have the following loop in which I receive Parse error:

$letters = array ("A", "B", "C", "D","E", "F", "G", "H","I", "J", "K", "L",
"M", "N", "O", "P","Q", "R", "S", "T","U", "V", "W", "X",
"Y", "Z", "&#198", "&#216", "&#197");


for ($i = 1; $i < 29; $i++) {
  if ($_POST['$letters['$i']']){
    echo "You have selected the following products:" . "<br>" . $_POST['$letters['$i']];
  }
}

or is it possible to write something like that:

for ($i = 1; $i < 300; $i++) {
  if ($_POST['$i']){
    echo "You have selected the following products:" . "<br>" . $_POST['$i'];
  }
}


Please, help me. I need to use array and variables inside _POST[].

When I put this chunk of code into it's own function:


function fetch_all ($dbc, $query) {

include ('knuffix_list_func.php');

pagination_start ($dbc, $query);

$offset = $pag_array[0];

$rows_per_page = $pag_array[1];

$query = $query . " LIMIT $offset, $rows_per_page";

echo "test query: " . $query;

knuffix_list ($query, $dbc);

pagination_end ($pag_array);
}


And when I echo out the query as you can see in the example, then I notice that the variables $offset and $rows_per_page never get appended.
I set the variable $pag_array to a global inside the function pagination_start(). It usually works when I DON'T wrap a function around this chunk of code, but if I do wrap a function around everything then the global suddenly won't work anymore.

Btw, this also won't work if I wrap a function around the function DECLARATIONS.

Any ideas, how I could make it work?

Hello. Trying to learn MVC better by creating my own little framework to understand how it works.

Things were going OK til now.

I have a base class:

<?php

/**
 * Base class most classes will extend from.
 * Simply put, this class just has methods that
 * most, if not all, classes will need.
 */

class Application {

public function includer($path) {

if (is_readable($path) == true) {
include_once($path);
} else {
die("404 not found =[");
}
}




}
?>


So the above method 'includer' just sees if a file exists/is readable and if so, include it.

Here's where I am using said method.


class Index extends Application {

function __construct($method = 'view') {
// load the index model
include(ROOT . '/app/models/model.index.php');

// Invoke requested method.
$this->$method();
}

public function view() {

$name = 'Smith';
$this->includer(ROOT . '/app/views/view.index.php'); # Problem here, i think
}


}


view.index.php just contains
<?php echo $name; ?>


All that is called from the index page, with this line of code
Application::includer($controller_path);


Now, in line
$this->includer(ROOT . '/app/views/view.index.php'); # Problem here, i think

If i get rid of $this->includer, the script will work and say 'Smith'.

If i have $this->includer(...) or parent::includer(...), it doesn't work.

why?

Hi guys, I am trying something fairly simple but I'm not sure if this would be a good practice. Basically I am using a big class called CommonLibrary that holds common functions as methods and common variables as static variables. But I have some variables here and there like $allAlphabet = range ('a' , 'z'), that cannot be declared as a property because it gives me a parse error.

I don't want to call an object for this class because instancing it is of no use. Values will never change with regards to instances. So the next best thing that I tried was declaring all static variables first, and then changing thei property values inside the class __construct with self::$variable = 'somevalue', and then using this code below to assign values to the empty static variables.


$dummyObject = new CommonLibrary;
unset($dummyObject);
echo CommonLibrary::$staticVariable; // This property is NULL before the constructer is triggered.


Anyone recommend any better ways of doing this?

Thanks in advance!

All my code is returning is the username... Please help.   index.php

<?php

include('user.class');
$user = new user("Jbonnett", "0", "Admin", "Jamie", "Bonnett", "jbonnett@site.co.uk", "01/09/1992");

echo "username: " . $user->getUsername() . "<br/>";
echo "id: " . $user->getId() . "<br/>";
echo "level: " . $user->getLevel() . "<br/>";
echo "Forename: " . $user->getForename() . "<br/>";
echo "Surname: " . $user->getSurname() . "<br/>";
echo "Email: " . $user->getEmail() . "<br/>";
echo "Dob: " . $user->getDob() . "<br/>";


?> 

user.class 

<?php

class user {
	
	private $username;
	private $id;
	private $level;
	private $forename;
	private $surname;
	private $email;
	private $dob;
	
	public function user($username, $id, $level, $forname, $surname, $email, $dob) {
		$this->setUsername($username);
		$this->setId($id);
		$this->setLevel($level);
		$this->setForename($forename);
		$this->setSurname($surname);
		$this->setEmail($email);
		$this->setDob($dob);
	}
	
	public function destroy() {
		unset($this->username);
		unset($this->id);	
		unset($this->level);	
		unset($this->forename);	
		unset($this->surname);	
		unset($this->uemail);
		unset($this->dob);		
	}
	
	public function setUsername($username) {
		$this->username = $username;
	}
	
	public function getUsername() {
		return $this->username;
	}
	
	public function setId($id) {
		$this->id = $id;
	}
	
	public function getId() {
		return $this->$id;
	}
	
	public function setLevel($level) {
		$this->level = $level;
	}
	
	public function getLevel() {
		return $this->level;
	}
	
	public function setForename($forename) {
		$this->foreName = $forename;
	}
	
	public function getForename() {
		return $this->forename;
	}
	
	public function setSurname($surname) {
		$this->surName = $surname;
	}
	
	public function getSurname() {
		return $this->surname;
	}
	
	public function setEmail($email) {
		$this->email = $email;
	}
	
	public function getEmail() {
		return $this->email;
	}
	
	public function setDob($dob) {
		$this->dob = $dob;
	}
	
	public function getDob() {
		return $this->dob;
	}
	
};

?>

im using a function which connects to a db called 'comments' and then inside that function i again called another function that will connect to the db 'main' to get avatars.... but as i put Code: [Select]
mysql_select_db("main") or die(mysql_error()); on the new function, the original function stops to fetch rows.

i tried to remove "mysql_select_db("main") or die(mysql_error());" and used the new function to return some text only and it worked, so i guess the connection to the db was the problem... i tried doing Code: [Select]
mysql_query("SELECT * FROM  main.avatar
INNER JOIN main.list ON main.avatar.title=main.list.id
WHERE main.avatar.page_id='$id'"); but it also didnt work

Hello all,

I'm hoping someone can help me out. Here is the code I have for a page that contains a user form:


<?php
include "include/dbc.php";

include "include/header.inc";
?>

<style type="text/css">
.mydate{
color:#00F;
text-decoration:underline;
cursor:pointer;
}
</style>

<script type="text/javascript">
function displayDate(d){
var date=new Date();
var D=date.getDate();
date.setDate(D+d);
var YYYY=date.getFullYear();
var MM=date.getMonth()+1;
MM<10?MM='0'+MM:null;
var DD=date.getDate();
DD<10?DD='0'+DD:null;
var span=document.getElementById('date');
span.innerHTML= 'Entries for '+MM+'/'+DD+'/'+YYYY;
}
onload=function(){displayDate(0)};
</script>

<h1>Food Diary</h1>

<div class="full">
<center><div><span class="mydate" onclick="displayDate(-1)"><img src="images/left_arrow.png" border="0">Yesterday</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span id="date" style="font-size:2em;"></span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="mydate" onclick="displayDate(1)">Tomorrow<img src="images/right_arrow.png" border="0"></span></div><br />
<a href="#" onclick="displayDate(0);return false;">Today</a>
</center>

<div class="full">
<form name="exercise" id="exercise" method="GET" action="">
  <center><table>
<tr>
     <td><h3>Add an Activity</h3></td>
</tr>
<tr>
     <td><input name="NewSearchString" style="width: 100px" type="text"/>&nbsp;&nbsp;<input type="submit" value="Search" /> </td>
</tr>
    <tr>
     <td>
         <select name="activity">
             <option value="_">Activity Browse...</option>
                <option value="all">All Activities</option>
                <option value="biking">Biking</option>
                <option value="condition">Conditioning</option>
                <option value="dancing">Dancing</option>
                <option value="fish">Fishing & Hunting</option>
                <option value="Home">Home Activities</option>
                <option value="misc">Miscellaneous</option>
                <option value="music">Music Playing</option>
                <option value="occupation">Occupation</option>
                <option value="running">Running</option>
                <option value="sports">Sports</option>
                <option value="walking">Walking</option>
                <option value="water">Water Activities</option>
                <option value="winter">Winter Activities</option>
</select> &nbsp;&nbsp;<input type="submit" value="Submit" /></td></tr></table></center></form>
</td>
</tr>
</table> </center>
<table width="100%">
    <tr bgcolor="#66CC33">
     <td><div>Activity</div></td>
        <td><div>Specific Activity</div></td>
        <td><div>Time (hh:mm)</div></td>
        <td><div>Distance</div></td>
        <td><div>Units</div></td>
</tr>
    <tr bgcolor="#66CC33">
     <td><div></div></td>
      <td><div></div></td>
       <td><div></div></td>
        <td><div class="Float"></div></td>
        <td class="cp_Distance"><div></div></td>
</tr>
<?php
if(isset($_GET[activity])) {
$category=$_GET[activity];
$result = mysql_query("SELECT * FROM exercise WHERE type='$category'");
?>
<form action="add_activity.php" method="POST">
<?php
while($row = mysql_fetch_array($result)) {
echo '<tr><td><div>'.$row[Type].'</div></td>';
echo '<td><div>'.$row[Name].'<input type="hidden" name="exerciseid" value="'.$row[Name].'"></div></td>';
echo '<td><div><input type="text" name="duration['.$row['Name'].']"></div></td>';
echo '<td><div><input type="text" name="distance['.$row['Name'].']"></div></td>';
echo '<td><div><select name="metric[]">
         <option value="mile" name="mile">mile</option>
             <option value="Km" name="Km">km</option>
             <option value="M" name="M">m</option>
             <option value="Yard" name="yard">yrd</option>
             <option value="Feet" name="feet">ft</option>
            </select></div></td></tr>';

}
mysql_close();
?>
<tr><td colspan="6" align="center"><input type="submit" name="submit" value="Add Activities" onClick="return confirm(
  'Are you sure you want to submit the activities?');"></td></tr>
</form>
<?php
}
?>
    <tr bgcolor="#66CC33">
     <td><div></div></td>
      <td><div></div></td>
       <td><div></div></td>
        <td><div class="Float"></div></td>
        <td class="cp_Distance"><div></div></td>
</tr></table>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



And here is the page that the user information is supposed to be passed to:


<?php
include "include/dbc.php";
include "include/header.inc";
$duration = $_POST["duration['.$row['Name'].']"];
echo '<h1>Added Activities</h1>';
echo $duration;
?>


Well, this isn't working for me. The second page code returns this error:


Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING


When I execute print_r, the values are returned to me. So I have two questions:

1) What do I need to do to change the code on the 2nd page to echo and POST the array?

2)The database contains multiple exercises under the same name. So, when the variables are passed to the 2nd page. All the values are returned regardless of whether they have been filled out or not. What can be done to only returned the user input and not the blank variables?

I dont know why I'm having so many problems with this. I need to get a variable that defined in an included file inside of a function I've got this

Inside file.php I've got the $variable1 and $variable2 defined (they're dynamic/different to each user)

include('file.php');

function foo() {
GLOBAL $variable1, $variable2;

echo $variable1;
echo $variable2;
}

foo();

Yet it outputs nothing?

If I Include file.php right inside of the function it works however. Any idea?