PHP - Handling Several Operations On One Page

Hey all,

This question is coming forth of another topic, but since that topic is not really about this issue, I posted this new topic.

Okay, so I made a table, and each row is generated with a WHILE loop.
In this while loop, there's also a form generated for each row/record, for updating them seperately.

I'm having trouble with naming those forms to process them seperately.
I could name them like name="form20110001", with the number being the record's id.
But since there can be gaps between id's, how can I retreive them efficiently?
And I want them to process all on a single process page, obviously.

How can I do this easily?
Can someone give me a concise example?
Would appreciate it a lot.
Thanks

Hi guys, I'm reviewing a piece of small web application and the current application does not have any error / exception handling capability. If there is any error, it would simply show an error message followed by die;.

I'm planning to implement a simple exception handling class to handle the errors. What I'm thinking is a simple redirect when an error is being caught together with an error code that correspond to an error message in a simple flat text file. The error page will then show an error message that corresponds to the code.

Here's what I have so far. Would appreciate if the PHP experts here would give simple pointers to enhance it.

<?php
class MyException extends Exception {}

try {
throw new MyException("error.php");
}

catch (MyException $e) {
$file = $e->getMessage();
header("Location: $file?e=1");
}

?>

This is what I have on my error.php page

<?php
$errorcode = $_GET['e'];

function getErrorMessage($errorcode) {
$errors = file("english.txt");
foreach ($errors as $error) {
list ($key,$value) = explode(",",$error,2);
$errorArray[$key] = $value;
}
return $errorArray[$errorcode];
}
echo "Test <br />";
echo getMessageMap($errorcode);
?>

As you can see here, exception class would redirect user to error.php if an error is caught together with a GET variable on the URL. On error.php page, it would GET the error code and then run it through a function to get the error message of the corresponding error code and then echos it out.

Was wondering if this is a good practice? My ultimate goal here is to avoid displaying the error message itself on private includes file.

Thank you in advance for your suggestions.

Hello,

I am a PHP biginner. I would be grateful if you could help with the issue below.

I have created three input dynamic variables in a separate php file using a For lopp.

<?php
                    
                    For ($i=1; $i<=31; $i++) {
                    
                    echo '<div class="row">';
                    echo '<div class="col span-1-of-4">';
                    
                    //Dates en français
                                    
                                    $jour = $jour + 1;
                                    $dateTest = $annee . "-" . $mois . "-" . $jour;
                                    $date = date_create("$annee-$mois-$jour");
                        
                    echo '<input name="workday[]" id="workday[]" class="donnee-pointage1" value="';
                    echo date_format($date, 'd/m/Y');
                    echo '">';
                        echo " ";
                    echo '</div>';
                        echo '<div class="col span-1-of-4">';
                            echo '<input type="time" name="startTime[]" id="startTime[]">';
                        echo '</div>';
                        echo '<div class="col span-1-of-4">';
                            echo '<input type="time" name="endTime[]" id="endTime[]">';
                        echo '</div>';                    
                    echo '</div>';
                        
                    }
                    
       ?>

 

The form works well.

In another PHP I would like to use the three arrays workday[], startTime[] and endTime to calculate the duration between startTime and endTime for each working day. I can access the different arrays using Foreach like below but I don't see how to combine thos arrays in order to be able to calculate the duration between two data that are in diffrent arrays. Is it possible to make calculations using variables stored in different arrays ? If so could you help me understand how ?

 

<?php

                if (isset($_POST['workday'])) {
                    foreach ($_POST['workday'] as $i => $workday) {

                   echo $workday . "<br>;

                    }
                }

                if (isset($_POST['startTime'])) {
                    foreach ($_POST['startTime'] as $i => $startTime) {

                    echo $startTime. "<br>;
                    }
                }

                if (isset($_POST['endTime'])) {
                    foreach ($_POST['endTime'] as $i => $endTime) {

                     echo $endTime. "<br>;
                    }
                }

               
                }
            
        ?>

I am currently working on an application to schedule conferences.  I have everything completed to create a conference including start time and duration.  The problem I have now though is how do I monitor MySQL for the conferences that are created and perform actions when the duration of the conference is up? I was looking into MySQL events but those seem to be only internal events and are not able to execute anything outside of that. I was thinking about a infinite loop that queries MySQL and sleeps for one second but thought that this might be a lot of load on the server. Any thoughts I really appreciate it.

I'm attempting to praise(if that's how you say it) txt data into xml with php and have come across a problem I've been unable to solve over the past two days so I'm coming here to ask the php gods for their assistance.

The file I'm prasing contains line after line of real estate data. I understand what I'm doing I think. I've gotten the data in a format that is more usable, taking out the tabs and replacing them with spaces and such. I am creating a series of if than statements which will select the address out of each line even though each line can be different. At the end of the address on each line there is a "S" character which stands for some property I'm not concerned with. I'm simply using the single 'S' to find the end of the address. The lines look like so:
                                                                                                                                                                        \/
403089   RESIDENTIAL   Residential   385000   7610 N Lakeshore Dr.   Harbor Springs   S   3   2   0   None      3   Litzenburger, Boo   Schaffer Real Estate
399562   RESIDENTIAL   Condominium   155000   4749 Pleasantview Road   Harbor Springs   S   2   2   0   One         Hartwick, Bob   Coldwell Banker Schmidt   

With a bunch of extra text following that I've trimmed off for our purposes here. See the 'S' after the town? I've created the following code to look for the 's' in relation to the word order.

Code: [Select]
<?php
// Listings file
$listings= file('listingsTest.txt');
$i = 0;
$j = 0;
$_ENV['a'] = 0;

foreach($listings as  $value) {
//Replace all spaces of every kinds with single spaces
$listings[$i] = preg_replace("'\s+'", ' ', $listings[$i]);
//Put all characters into an array corisopndings to each line in $listings
$_ENV['chars'.$i] = preg_split('//', $listings[$i]);

//Place all words and uninterupted numbers and place in array $words
$_ENV['words'.$i] = preg_split('/ /', $listings[$i]); 

$i++;
}

//echo $_ENV['chars'.'1']['1'];

foreach($_ENV['words'.$_ENV['a']] as $char){
$countedf = preg_split('//', $_ENV['words'.$_ENV['a']][$j]);
$counted = count($countedf) - 2;

$wordBeforef = preg_split('//', $_ENV['words'.$_ENV['a']][$j-1]);
$wordBefore = count($wordBeforef) - 2;

$wordAfterf = preg_split('//', $_ENV['words'.$_ENV['a']][$j+1]);
$wordAfter = count($wordAfterf) - 2;

if( ($counted == 1) 
&& ($wordAfter == 1)
&& (is_numeric($_ENV['words'.$_ENV['a']][$j+1]))
//&& ($wordBefore == 1)
//&& (!is_numeric($_ENV['words'.$_ENV['a']][$j]))
//&& (is_numeric($_ENV['words'.$_ENV['a']][$j+2]))
//&& ($_ENV['words'.$_ENV['a']][$j+3] == ' ' )
){
echo '*';
echo $_ENV['words'.$_ENV['a']][$j];
echo '*';
$_ENV['a']++;
$j =0;
//$j=1
}
//echo $_ENV['chars'.$_ENV['a']][$j];

$j++;
}

?>

As you can see from the if then statements, I've gotten to the point where It's replying to the 'S' at the end of the address thus telling me where the address ends. I am however having  a problem I believe is a server issue. The code works fine when applied to 12 lines like the ones above, when I apply it to more of those lines it does not return the 'S' for them even if I used the exact same line more than 12 times. The main file which I'd like to automate the parsing of has thousands of these such lines in it.  If I try to apply this code to the file with these thousands of lines, the browser returns a "The website encountered an error while retrieving http://localhost. It may be down for maintenance or configured incorrectly".

I take this to mean the server is doing too much work for it to be completed. I think when it reaches it's twelfth, the temporary memory of my program/server or some thing else, is exhausted. I'm applying these if then statements to every single word in the file. Is this a processing issue on the server? I was applying this code to every character in the file and thought I could fix the problem by applying instead to every word given there are less words than characters. I have the processing time on the server set to 10000 and it's not taking along time to return the error message.

I would be very grateful to any help any of you could provide. Thank you for your time.