PHP - Beginner Question: Changing Key Values In Array

Hi all
For example if you see this code:

    public function __set($varName,$varValue)
    {
        $this->$varName = $varValue;
        if ($varName == "varOne") {
            $this->varTwo = $this->varOne * 9;
        }
    }

Why somewhere dollar sign exists and somewhere not:
$this->$varName , $this->varTwo
?
Thanks

I have a search box with an input box. When the user enters a string in this box and then when it clicks submit,  the form needs to go to the

http://ww.mywebsite.com/wp-content/uploads/<?php echo $_POST["name"]; ?>.jpg where $_POST["name"] is what the user entered.

how to make it work??


<form action="http://ww.mywebsite.com/wp-content/uploads/<?php echo $_POST["name"]; ?>.jpg" method="post" target="_blank">
    <!-- form fields here -->
   <INPUT TYPE = "Text" NAME = "name">
   <input type="submit" />
</form>

i am brand new to php and thought a project looking at the weather undergound api would be a great place to "cut my teeth" and i am following up on a recent post i saw here http://www.phpfreaks.com/forums/index.php?topic=354658.msg1675207#msg1675207
the responder excellently described how to use the foreach function however i am not sure this is right for my application

the project i am trying to accomplish is defining the freeze thaw cycle for the next ten days which i can accomplish in excel but thought this is a good way to learn to code.

so my question is how should i do this, i have tried and failed with trying to pick out individual highs and lows data and define them as above or below freezing but i can't figure out how to pick out the right number

my code for this part of the project is
   $json_line = file_get_contents("http://api.wunderground.com/api/{key}/geolookup/forecast10day/q/$zipcode.json");
   $parsed_line = json_decode($json_line);
   echo $parsed_json->{'forecast'}->{'simpleforecast'}->{'forecastday'}->{'date'}->{'weekday'};
   $temp_h = $parsed_line->{'forecast'}->{'simpleforecast'}->{'forecastday'}->{'high'}->{'farenheit'};
   $temp_l = $parsed_json->{'forecast'}->{'simpleforecast'}->{'forecastday'}->{'low'}->{'farenheit'};
   echo "Forecast for ${day} is:\n";
   echo "High Temp is ${temp_h}<br />";
   echo "Low Temp is ${temp_l}\n";

another road i was looking at going down was trying to do an array shift

any help would be greatly appreciated
thanks
jeremy

I'm a beginner with php, but I have a few nifty things working, and I'm trying to enhance my project to do something at the next level.  The project is a library database search tool, and I'm having trouble getting from the search results to the page which shows a record for an individual book.  The search tool works well, and works a few different ways, so I feel I should be able to get this, but this is a first attempt.    I'm stuck on where and how to use $_GET.  If I understand what I need to do, it's something like this:   My search results page has a link as part of the last column:       My first question is, how do I parse this link in php so that it pulls the Id. number from the database, (so that "Link" points to /book.php?0140441638 as a uri?  That column looks something like this:     On the next page, (book.php) which should be the page which shows the information for the individual book, after connecting to my database I have $query="SELECT * FROM MyTable WHERE id='0140441638'".  How would I go about passing the '0140441638' from the referring link?     The next question is how to concatenate this with the openlibrary link in the screenshot -- so that it is passed like src='..//covers.openlibrary.org/b/isbn/**RESULT**-L.jpg' />   Thank you to anyone who can help me with this!      

My table has 250 rows, but COUNT only seems to see 162 of them.  In phpMyAdmin, for instance, there is a notice in the browse tab: "Showing rows 0-161 (162 total, Query took 0.0030 sec)".  On one of my php pages, I get the same 162 result from this attempt to count the number of entries to my auto-incrementing "id" column :

$result = mysql_query('SELECT COUNT(id) AS id_count FROM MyTable)';

Can anyone suggest the kinds of things I should check/adjust to understand why about 90 rows are not being counted?  Many thanks in advance for any help anyone can offer.

Hi,

I'm using the following code:

<td>$row[color]</td>

and the possible values for this field are 1, 2 and 3. But I want the return to be red for 1, blue for 2, and green for 3.

How do I write it so that instead of getting a row of 1's, 2's and 3's, I change those numbers to their corresponding colors?

Thanks!

Hi all,

I'm a first time poster here and I would really appreciate some guidance with my latest php challenge! I've spent the entire day googling and reading and to be honest I think I'm really over my head and need the assistance of someone experienced to advise the best way to go!

I have a multi dimensional array that looks like (see below); the array is created by CodeIgniter's database library (the rows returned from a select query) but I think this is a generic PHP question as opposed to having anything to do with CI because it related to working with arrays.

I'm wondering how I might go about searching the array below for the key problem_id and a value equal to a variable which I would provide. Then, when it finds an array with a the matching key and variable, it outputs the other values in that part of the array too.

For example, using the sample data below. How would you recommend that I search the array for all the arrays that have the key problem_id and the value 3 and then have it output the value of the key problem_update_date  and the value of the key problem_update_text. Then keep searching to find the next occurrence?

Thanks in advance, as above, I've been searching really hard for the answer and believe i'm over my head!

Output of print_r($updates);

CI_DB_mysql_result Object
(
    [conn_id] => Resource id #30
    [result_id] => Resource id #35
    [result_array] => Array
        (
        )

    [result_object] => Array
        (
        )

    [current_row] => 0
    [num_rows] => 5
    [row_data] => 
)


Output of print_r($updates->result_array());

Array
(
    [0] => Array
        (
            [problem_update_id] => 1
            [problem_id] => 3
            [problem_update_date] => 2010-10-01
            [problem_update_text] => Some details about a paricular issue
            [problem_update_active] => 1
        )

    [1] => Array
        (
            [problem_update_id] => 4
            [problem_id] => 3
            [problem_update_date] => 2010-10-01
            [problem_update_text] => Another update about the problem with an ID of 3
            [problem_update_active] => 1
        )

    [2] => Array
        (
            [problem_update_id] => 5
            [problem_id] => 4
            [problem_update_date] => 2010-10-12
            [problem_update_text] => An update about the problem with an ID of four
            [problem_update_active] => 1
        )

    [3] => Array
        (
            [problem_update_id] => 6
            [problem_id] => 4
            [problem_update_date] => 2010-10-12
            [problem_update_text] => An update about the problem with an ID of 6
            [problem_update_active] => 1
        )

    [4] => Array
        (
            [problem_update_id] => 7
            [problem_id] => 3
            [problem_update_date] => 2010-10-12
            [problem_update_text] => Some new update about the problem with the ID of 3
            [problem_update_active] => 1
        )

)

Can be those <input ...> types with values changed from a script ?. Imagine it like we have an admin and we want to change some input values with a generated form on that page instead of going source and changing 1 by 1 ?

I have a form for  a sign in page that I want the label for the form field to actually be displayed in the text box and clear when the box is selected to enter text.  I've accomplished this using the code below and it works fine.  The problem that I'm having is in IE the password field does not change to display dots or asterisk in place of each character.  It works fine in Fire Fox but not in IE.  Is there way to accomplish this using php or so that it is compatible with most browsers?

Here's the code that I'm using:
Code: [Select]
<?php

echo "<input type=\"text\" name=\"pword\" size=\"17\" value=\"Password...\" style=\"color: #999999\" onfocus=\"if (this.value == 'Password...') {this.value=''; this.style.color='#000000'; this.type='password';}\"> ";

?>

I am trying to make a Web Form for people to fill out that has two drop down menus where i want the first drop down menu's selection changes the values of the selections in the second drop down. ((IE. If the first drop down value is "product 01" then the second drop down shows values "Red, Green, Blue" while if the first drop down value is "product 02" then the second drop down shows values "Yellow, Green"))
Anyone have any ideas? Thanks in Advance.

I'm not completely sure how to implement this so I'd like to ask you to give me an idea if you can
For a tennis booking system.. it will look something similar to (should be a table but this is for the sake of the idea)

         Date: Oct 25th, 2010   (go to oct 26)
             Court 1                 Court 2       Court 3        Court 4

8:00     Open(bookit)     Tally                Open           Hellio
9:00     Andy                  Roger             Barney         Training
...etc

Now everyday, this table should be empty, so new bookings can be made
how would I make it so a new table is empty /or has dif bookings every day (based on date) efficiently?

Im guessing I will have dif values in the sql table for dif dates but what I'm not sure of is how to display it in page

for ex, if someone presses the button oct 26, the new table is for that date, wif diff values

I posted a topic earlier and there was confusion as to what I could not work out.   I am able to display the checkbox, either checked or unchecked depending of the value or 1 or 0 in the obcDisplay field.

<input type="checkbox" name="obcDisplay" value="<?=$r['obcDisplay'] ?>" <?=($r['obcDisplay']) ? 'checked="checked"' : ''; ?>/>

I am trying to update the DB table by the checkbox.  If the checkbox is checked (obcDisplay = 1) and I uncheck the box and submit, I want the table updated so that obcDisplay now equals 0.  When the form is displayed, the checkbox is now uncheck (obcDisplay = 0).  Now I check the box and submit and the update changes the field from 0 to 1.   I can display the checkbox as checked or unchecked by the DB field obcDisplay being either 0 or 1.  It is changing the value where I am having the problem.

I have mysql select query shown below retrieving data from a database:

$sql = "
SELECT 
	student, sum( test_score ) as score
FROM 
	test
INNER JOIN 
	level 
ON 
	test.level_id = level.level_id
GROUP BY 
	student"
$result = $mysqli->query($sql, MYSQLI_STORE_RESULT);
if($result)
{
      while ($row = $result->fetch_array(MYSQLI_ASSOC))
       {
	    var_dump($row);
       }
}

On inspection of the retrieved array with var_dump(), i have these result below:

array (size=2)
  'John' => string 'English' (length=2)
  'Score' => string '20' (length=3)

array (size=2)
  'Mary' => string 'Math' (length=3)
  'Score' => string '35' (length=3)

array (size=2)
  'Samuel' => string 'Physics' (length=3)
  'Score' => string '5' (length=3)

 How do I get at and print out the highest score from this set of array values within this context.
 I tried this echo max($row['count']) but i understandably got this feedback:
Warning: max(): When only one parameter is given, it must be an array   Thanks.

Hi there,

Basic question, but I can't seem to find a page in the PHP docs that answers (though I'm sure such a one exists, I just can't seem to think up the right search terms - anyway)

My question is: is there a short-hand way to use a value from an associative array as the key in another associative array?

So for example, given this array:

$the_array = array(0 => array('name': 'the_name', 'value' : 'the_value'), 1 => etc....);

then this kind of foreach loop doesn't work

Code: [Select]
$new_data = array();
foreach($the_array as $element){
$new_data[$element['name']] = $element['value'];
}

Obviously I can just save out the values, like $name = $element['name'] --- but I was just wondering if there was a more efficient way to do it?

Cheers,

PS. I tried encapsulating with {} - i.e. $new_data[{$element['name']}] --- but that also fails.

Hello all,

I have yet again trouble finding a logical solution to my problem.
I'm fetching an array which can hold 1 or more values.
The problem is, I want these values to ouput in my json_encode function, but this also needs to happen dynamically depending on the amount of values.

I can't explain it further, so here's the code so far:

Code: (php) [Select]
$files = mysql_fetch_array($get_files);

$a = count($files);

$i = 1;
while ($files) {
$variablename = 'fileName' . $i;
$$variablename = $files['fileName'];
$i++;
}

$output =  array( OTHER VALUES , 'fileName1' => $fileName1, 'fileName2' => $fileName2, 'fileName3' => $fileName3, ............); // How do I add the fileNames dynamically depending on how many there are?


This got me thinking, I also need to dynamically GET the values with jQuery. How would I do that, when the above eventually works?

Thank you.