Learn VBA & Macros in 1 Week!

PHP - My Function Is Ignoring Variables?!?

Full Excel VBA Course - Beginner to Expert

My Function Is Ignoring Variables?!?	View Content

I have a php script. I defined a variable outside of a function, but i cannot echo the variable inside the function.

When I execute this:

<?PHP
$testvar = "test worked!";

testfunction();

function testfunction(){
echo $testvar;
}
?>

Nothing happens. what am i doing wrong.
I did this on my local host. Apache running on Windows Vista Ultimate 32 bit Edition.

Thanks in advance.

Full Excel VBA Course - Beginner to Expert

Set Variables In A Function

Similar Tutorials

View Content

Hello, I am trying to define some variables in a function, but the variable just returns null no matter what I do. Could someone please tell me what I'm doing wrong?

Code: [Select]
<?php
function checkname()
{
global $t;
if($_SESSION['name'] == '')
{
return false;
$t = false;
}
elseif(isset($_POST['cont']) && $_SESSION['name'] != '')
{
return true;
$t = true;
}
}

var_dump($t); // returns NULL upon correct or incorrect submit.
?>

Function If With 4 Variables

Similar Tutorials

View Content

Hello I have a table with four variables. By choosing each of the variables we obtain a numerical value. I have a form with each of the variables to be selected and what I meant was that it appeared the value without having to place the table on page.

step I (VAR 1)
VAR2 VAR3 8h 10h 12h 14h 16h 18h(VAR4)
A 0-30 4 2 1 1 2 4
A >30 1 3 2 4 5 3
B 0-30 7 6 4 6 4 3
B >30 4 5 3 6 3 5
C 0-30 2 2 2 2 1 8
C >30 8 8 5 6 2 2
D 0-30 6 9 8 2 8 8
D >30 5 5 6 8 6 8
step II (VAR1)
VAR2 VAR3 8h 10h 12h 14h 16h 18h(VAR4)
A >30 2 3 5 8 2 6
B >30 2 8 2 9 8 8
C >30 8 9 2 8 5 2
D >30 8 2 1 8 2 9

step I and step II is the first variable, then we have to see if it was A, B or C (second variable) and perhaps more complicated if the input value is between 0 - 30 or >30 (third variable) in stage I or greater than zero (third variable) in step II. The four variable was the hours.

Have any suggestions on how I do this?

Thanks

Function Variables

Similar Tutorials

View Content

I have a script that uses two functions and a simple switch statement.

If I wanted to take the value of variables from function 1 and use them in function 2, would I have to declare them global in both functions, function 1, function 2, or outside the functions?

For example
Code: [Select]
<?php

function function_1() {
//Here?
global $variable_1;
$variable_1 = hello world;
return $variable_1
}

function function_2() {
//Or Here?
global $variable_1;
echo $variable_1
}

//Or here?
global $variable_1

//Or in all three places? I want the variable to be available everywhere in the script!
?>

Access Two Variables From Function

Similar Tutorials

View Content

Global Variables And Function Arguments?

Similar Tutorials

View Content

Hello

I've have read that global variables should not be used.

so if i have 2 .php files:

index.php - main content php file

sitefunctions.php - php functions site file

on my index.php page i have the following (an example of my problem):

<?php

displayError($errorID);

?>

and in the sitefunctions.php file i have the following (an example of my problem):

<?php

function displayError($errorID)
{
        if($errorID == 1)
        {
              echo "Password Failure";
        }
        else
        {
              echo "Other Failure";
        }
}

?>

now that works but since when first accesing that page the $errorID is not set then i get an error. How can i achieve this without first setting a blank $errorID global variable?

Thanks

Pass $_post Variables To Function

Similar Tutorials

View Content

Hello everyone,

Can someone show me a way how to pass $_post variable from a form to a function?

So, input username and input password to a function login($username, $password).

Function With Required File And Variables

Similar Tutorials

View Content

I have a php file with a bunch of variables declared. I now need a function to put data on a separate page that pulls variables from the required page.

So, on the required page, I have a variable set like this: $qb1 = "John Doe";

The function on the new script is called like this: getplayer($qb1);

I've tried this without the dollar sign in the function like this: getplayer(qb1); and then adding the $dollar sign in the rest of the function code...but it never populates the sql query correctly. I'm guessing this is a case for variable variables or something similar, but I don't know how to get the variable value from the required page. Any ideas? Thanks.

Here's the code:

	<?php
	function getplayer($position)
{ // start function
	//$new_position = "$" . $position;
$new_position = $position;
	
$file = "their.php";
require "$file";
//echo $qb1;    this displays the name John Doe...as $qb1 is declared in the required file
	
$db_select_their = "bschultz_their";
	$servername = "localhost";
$username = "user";
$password = "pass";
$dbname = "db_name";
	// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
	$sql = "SELECT * FROM (select number as position_number, name as position_name, pronunciation as position_pronunciation, pos as position_pos, height as position_height, weight as position_weight, year as position_year, city as position_city, state as position_state, notes as position_notes FROM $db_select_their WHERE name = '$new_position') as position";
	//$sql = "SELECT * FROM bschultz_their WHERE name = $new_position";
   
echo $sql; //exit;        
/*
this displays this text...   SELECT * FROM (select number as position_number, name as position_name, pronunciation as position_pronunciation, pos as position_pos, height as position_height, weight as position_weight, year as position_year, city as  position_city, state as position_state, notes as position_notes FROM bschultz_their WHERE name = '') as position

The name is empty
*/
	$result = $conn->query($sql);
	if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        echo "#: " . $position_number . " - Name: " . $position_name . "";
    }
} else {
    echo "0 results";
}
	} // end function
	
getplayer("${$qb1}");
$conn->close();
?>

Edited September 8, 2019 by bschultz

Big Function, Arrays, Variables...i Want To Speed Things Up.

Similar Tutorials

View Content

Okay I have a function that stores data into an Array. The function takes about 7 seconds to run and through a number of different loops it creates one final array with about 15,000 keys. I want to recall this data a number of times in different functions, however how can I have this data easily accessible without running the function each time.

EX:
Code: [Select]
function theFunction()
{
for($x=0;$x,=15000;$x++)
{
//Run the loop and store data.
$string[$x] = //output from other loops and calculations
}
return $string
}

//Then later on if I want to recall the data the only way I know how is to do the follow:
$newstring = theFunction()

The only problem I have with this is that it has to re-run the function every time in order to get to the data it spits out. How can I store this data into another array outside of the function without having to re-run it?

I hope this makes sense.

Thanks.

Sending Variables Back To Parent Function.

Similar Tutorials

View Content

Hey ive been wanting to know how to make a function call another function which will then create a variable which i can send back to first function where i can use it.

I tried somthing like this
Code: [Select]
<?php
a();
function a($wall)
{
b();
echo $wall;
}
function b()
{
$wall = "test";
#a($wall);
}
?>
Thats what i tried but ofcourse didnt work, how would i go about doing this?

Thanks.

How Do I Pass Arguements Into Function & Set Variables Inside?

Similar Tutorials

View Content

I have the array defined and print_r (outside the function is show what I need...)
However, I need to somewhay pass those three arguments - name, price, shipping (keys & values) into the "all_products" function and assign (inside the function) each element to a variable {name, price, shipping}.

Code: [Select]
function all_products($key,$value) {

# This is where I'm lost - I know the values are passed to the function but how to I assign them to below variable?
echo "$name";
echo "$price";
echo "$shipping";

// Products array defined to send values into "all_products" function & loop to display item name & individual pricing (using WHILE LOOP)
$products = array('Product1' =>
array ( 'name' => 'item one',
'price' => '30.00',
'shipping' => '0.00'),
'Product2' =>
array ( 'item two',
'price' => '19.50',
'shipping' => '0.10'),
'Product3' =>
array ( 'item three',
'price' => '21.99',
'shipping' => '0.10')
);

while (list($keys, $values) = each($products)) {
while (list($k, $v) = each($values))
echo "Checking Looped Data Outside Function: <strong>$k: </strong> $v<br/>";

# echo "<pre>";
# print_r($value);
# echo "</pre>";

# Trying to send array elements into "all_products" function & echo (name, price, shipping) keys and values inside that function
all_products($k,$v);

}

Passing Variables To A Function On A Click On Image

Similar Tutorials

View Content

Hey guys,
I want to pass the unique id of a node to a function when that image is clicked.
Actually i am a newbee in php so don't know what to search about or where to look for it,but find this place and you all guys so helpful so i am asking for a guide here

Global Variables Null After Function Call

Similar Tutorials

View Content

Hello, my global variable is getting whacked (defined null or being undefined) after a function call. I'm not sure if it's happening when leaving the function that assigns it or when the form is "posted", or something else.

Code: [Select]
<?
//global variables
$globalVarString = "";

//function definitions
function displayResults()
{
global $globalVarString;

if ($globalVarString == "") {displayForm("please enter your search string again");}
else {displayForm("you typed: $globalVarString");}
}

function getResults($searchInput)
{
global $globalVarString;
$globalVarString = $searchInput;

//give status
?>
<html><head><title>Search</title></head><body>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
Thanks for entering your data (<? echo "$globalVarString" ?>).<br><br>Please press the submit button to process your data &nbsp&nbsp
<input type="Submit" value="Submit" name="processQuery">
</form></body></html>
<?
}

function displayForm($message)
{
//prompt for input
?>
<html><head><title>Search</title></head><body>
<form action=" <? $_SERVER['PHP_SELF'] ?>" method="post">
<h3>Please enter your search <input type="text" name="searchString"> &nbsp&nbsp
<script type="text/javascript">document.forms[0].searchString.focus();</script>
<input type="Submit" value="Submit Query" name="searchQuery"></h3>
</form>
<? if (!$message == ""){echo "<br> &nbsp&nbsp <h4>" . $message . "</h4><br>";} ?>
</body></html>
<?
}

//main()
if(array_key_exists('searchQuery', $_POST)) {getResults($_POST['searchString']);}
elseif (array_key_exists('processQuery', $_POST)) {displayResults();}
else {displayForm("");}
?>

Passing Variables Inside Of A Function From Include() File...

Similar Tutorials

View Content

I am trying to pass a variable from inside of a function in a file that is included

eg
include.php
Code: [Select]
<?
function noms(){
$foobar = "apples";
}
?>

main.php
Code: [Select]
<?
include("include.php");
noms();
echo "these ". $foobar. " are most delicious... OM NOM NOM";
?>

I am essentially using a include file for a mysql connection and based on the connection outcome i am either setting a value to true or false. It prints "Connected succesfully" and what not just fine, but, after that it wont pass on the variables data. I know its the function because, it passes the data if i put the variable before the function... i just dont get it.. any help would be great.

Thanks.

Ansel

Scope Of Variables Inside A User-defined Function

Similar Tutorials

View Content

Hello all,

I have a 14 column csv that I load into an array, retrieving only the required fields, load the array into columns and perform a sort:
Code: [Select]
foreach ($array as $key => $row) {
$firstname[$key] = $row["firstn"];
$lastname[$key] = $row["lastn"];
$address1[$key] = $row["addr1"];
$address2[$key] = $row["addr2"];
$address3[$key] = $row["addr3"];
$city[$key] = $row["cit"];
$stateprov[$key] = $row["state"];
$country[$key] = $row["cntry"];
$membernumber[$key] = $row["num"];}
array_multisort($membernumber,$lastname,$firstname,$address1,$address2,$address3,$city,$stateprov,$country,$array);When I pass say the first three letters of a last name ($find = "smi"), all records matching the search criteria are returned:
Code: [Select]
foreach ($array as $key => $row) {
if (strncasecmp($find, $lastname[$key], strlen($find)) == 0) {
echo "<tr><td>" . $firstname[$key] . "</td>";
echo "<td>" . $lastname[$key] . "</td>";
echo "<td>" . $address1[$key] . "</td>";
echo "<td>" . $address2[$key] . "</td>";
echo "<td>" . $address3[$key] . "</td>";
echo "<td>" . $city[$key] . "</td>";
echo "<td>" . $stateprov[$key] . "</td>";
echo "<td>" . $country[$key] . "</td>";
echo "<td>" . $membernumber[$key] . "</td></tr>" . chr(13);
}}}So far so good. However, I'd like to put the search part into a function so I can call it a number of times without having to reload the entire csv:
Code: [Select]
function FindMember() {
foreach ($array as $key => $row) {
if (strncasecmp($find, $membernumber[$key], strlen($find)) == 0) {
echo "<tr><td>" . $firstname[$key] . "</td>";
echo "<td>" . $lastname[$key] . "</td>";
echo "<td>" . $address1[$key] . "</td>";
echo "<td>" . $address2[$key] . "</td>";
echo "<td>" . $address3[$key] . "</td>";
echo "<td>" . $city[$key] . "</td>";
echo "<td>" . $stateprov[$key] . "</td>";
echo "<td>" . $country[$key] . "</td>";
echo "<td align='right'>" . $membernumber[$key] . "</td></tr>" . chr(13);
}}}}The search criteria would come from a second txt file with every line containing 2 numbers, separated by a comma:
Code: [Select]
foreach ($lines as $member => $numbers) {
$exploded = explode(",", $numbers);
$find = $exploded[1];
FindMember();here $exploded[1] corresponds to $membernumber[$key], so this is where I would call the function, but this is where I run into trouble, nothing gets returned.

Does this have something to do with the scope of variables inside a user-defined function?

I'd appreciate it if someone could point me in the right direction.

TIA

Xml Ignoring Comments

Similar Tutorials

View Content

Hi all,

I have another uestion. I am currently working with an XML document that has some comments in it that need to stay however it is messing up my parser that I am working on. How can I get around this issue and make the php parser ignore the comments? here is a snippet of the code I am working on.

php
Code: [Select]
//open XML file containing data for current slide

$currentslidefilepath = "slides/xml/";
$currentslidefilepath .= $slides[$currentslide];
$currentSlideXml = simplexml_load_file($currentslidefilepath);

XML
Quote



<Basic>
<another>some data</another>
</Basic>

Min(array) But Ignoring 0s

Similar Tutorials

View Content

I have any array $DF containing numeric variables, I want the minimum value of the array stored in $val but ignoring any zeros i.e. the lowest number that is not 0. Is this possible?

Ignoring Duplicates

Similar Tutorials

View Content

Hi,

I have a database table which is full of books e.g book_title, book_author, book_date etc. Im trying to work out a way to list all the authors without duplicating them, if that makes sense.

If I do a simple query and then display the book_author in a loop it will show multiple entries for each author.

I just want it to display each author once.

Hope that makes sense lol sorry Im a newbie.

Anyone know how I can do it ?

Thanks in advance,

Scott.

Csv, Ignoring Empty Fields

Similar Tutorials

View Content

Greetings!

I have a CSV file that looks something like this:

Quote

,,,,,,,,sdfsdf sdfsdf,,,,,,,,,,,,,,,,,,,,,,sdfsdfsdf:,,,,,,,,2011-04-27,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,dfgdfg,,fgh,,,,,gfh,,,,,,,,,,,,,,fghfgh,,,,,fghf,,
fghfh,,
fgh,,,,,,fhfgh,,,,

Code: [Select]
<?php

$handle = fopen("csv.csv", "r");

while (($data = fgetcsv($handle, 5000, ",")) !== FALSE) {
echo "<pre>";
print_r($data);
echo "<pre>";
}
?>
Now this prints everything, could someone please provide me with an example of how I can ignore the "empty fields"?

Thanks in advance!

Php Page Ignoring Css Text Formatting

Similar Tutorials

View Content

I have a dynamic menu (jglidemenu) installed on my site. It works fine on my HTML pages but on my PHP pages the font formatting from the menu's style sheet isn't working and I haven't been able to figure out why.

Here's a page where the menu is working correctly:

http://www.greenbayeasthighschool.com

and here's a page where the formatting fails:

http://www.greenbayeasthighschool.com/staff_by_lastname.php

This is my first attempt at creating a page with PHP. Is it not possible to use CSS formatting on a page that includes PHP content?

Thanks in advance for any help.

Need Help Ignoring Certain Items Acquired From A Foreach Loop

Similar Tutorials

View Content