PHP - Concatenating A Series Of Statements And Storing Them In A Variable

This seems really straight forward but I can't figure out why it's happening.  As a part of an account registration script, I'm randomly generating a password using a function called, generatePassword($length,$strength);
I hash the password (md5) before putting it in the database but I also email the non-hashed version to the user.  My problem is that each time I call the variable, it generates a new password so the one in the database does not match the one received by the user, $user_password_plain = generatePassword($length,$strength);
$user_password = md5($user_password_plain);
Is there a different way to store the variable so that I can access it later in the script and it will be the same?  I tried using a session variable but that didn't seem to work either.  Thanks!

Hi Everyone,

I have built a website utilizing a PHP abstract Webpage class to create the pages. When creating another class that inherits from Webpage class I rewrite abstract functions, etc. where needed. When instantiating an object of the extended classes I pass the constructor the $page_title, $css_file, $meta_data, $keywords, etc., etc.. I am able to pass html markup in a string variable to a class level "Setter" function  to populate a "main area" of the website and all works perfectly.

However, I have a contact form which I send the "Submit Message" button click to a PHP function that takes care of making sure the form fields are not empty, then sends email and returns a success message back to the calling page, if they are empty, the function returns what fields are empty(required). If the page includes empty and populated fields I want to put the populated fields into session variables so that I may populate the fields when the user is taken back to the page and display to the user the required fields that were empty(this functionality is already within the function).

This brings me to my question(see code below for reference):

Seeing that I am populating a variable with a string it seems I cannot use an if statement, echo or the like, my IDE gives me errors. How may I insert an if statement where needed to populate the empty form fields?
Code: [Select]
include('../php_functions/functions.php');//for the chechData() function

$error_message = NULL;

if(isset($_POST['submit']))
{
    $error_message = checkData($_POST, 'Renovation & Consulting');
}
$main_content =
'<form method="post" action="">
    <fieldset id="contactform">
        <legend>Renovations &amp; Consultations</legend>'.

        [color=red]//placing a variable here works fine![/color]
            $error_message
       
            .'<div class="row_div">
                <div class="label_div">
                    <label>First Name:</label>
                </div>
                <div class="input_div">
                    <input name="First Name" type="text" maxlength="50" size="50" value="'.[color=red]if(session variable not empty) echo it here;.'"[/color] />
                </div>
            </div>
            <div class="row_div">
                <input name="submit" type="submit" value="Send Message" />
            </div>
      </fieldset>
</form>';

Thanks for any and all responses.

Chuck

Hopefully someone can help, firstly i am a newbie at php coding but keen to learn more.   Here is my problem    The database is built correctly with all the information i need, the first part is the dropdown menu which you select a car, next you choose a month and mileage - from there it shall show you the correct price for each one. There is columns for each price, mileage and months i just need to figure out how best to start this thing.   I first started by this   $query = "SELECT DISTINCT Full_Description FROM import"; 

Hi there,

I am working on a PHP web form and I have a very simple situation I guess, I have a variable named: $MyVal

When I do

print_r($MyVal);
To see whats inside, I get:

SimpleXMLElement Object ( [0] => 8.23 )
Now I am assigning this variable into a session variable so that I can do calculations with it.

So I assign:

$_SESSION['MySesVal'] = $MyVal;
But after assigning to session variable, when I do my calculations:

$finalValue = $_SESSION['MySesVal'] * 4;

I get 0. So is it because the actual $MyVal variable has some XML stuff as:

SimpleXMLElement Object ( [0] => 8.23 )

So what is the right way to properly assign $MyVal variable to a session variable to do calculations.

Please reply.

All comments and feedbacks are always welcome.

Thank you!

I have a submit.php file that includes the following jQuery code:

<script> [...] request.done(function( json ) { jQuery('input[name=thumbnail-url]').val(json.thumbnail_url); jQuery('input[name=job_title]').val(json.title); jQuery('textarea[name=htmlcode]').val(json.html); [...] </script>

I need to remove

jQuery('textarea[name=htmlcode]').val(json.html);

and pass the "json.html" value into a PHP variable in another php file (functions.php).

The code in the functions.php file is already there.

The thing i need to do (and i am seriously struggling with it) is placing the value of json.html into a $phpvariable that i can then call from the function.php file.

Do you need any more info for this issue?

Thanks.

I don't get why this fails. date() is meant to be a string, so why does it not concatenate correctly?
Code: [Select]
date_default_timezone_set('UTC');
$inputTime = date('c');
$inputTime = $inputTime . ' (UTC)';
// or $inputTime = date('c') . ' (UTC)';
Thanks.

The below might be a noob question but,

I concatenate two spaces in the below string

$new_hebrew_date_string = $hebrewMonthName . '  ' . $hebrewDay . "%";

yet when I execute

   echo "<br />new_hebrew_date_string is $new_hebrew_date_string<br />";
   printf("hebrew_date_string is: %s <br />", $new_hebrew_date_string);

Only one space is output in between $hebrewMonthName and $hebrewDay regardless
of how many spaces I pad the string with.

Strangely enough, the string $new_hebrew_date_string is correctly padded w/spaces when I pass it as a
parameter to a mySQL stored procedure.

Any ideas anyone?

Thank you.

Hi everyone,

I have a gateway and I can submit 200 max at one time using POST. I need to send around 200,000 at a time. So, in a nut shell, I need to submit 1,000 POST without actually refreshing my page.  How can I do that ? Becuz once I submit a POST, the page on my browser goes to the gateway page rather than staying on the current page. So, what I need is something like click one button do 1,000 POST and send around 200,000. Looking forward to receiving any input on this. Thanks all.

Regards

What im trying to do is create a file with the name "triangular_10.txt" where the number in the file name is the number the user entered. From there I want the text file to have the triangular series of numbers. So if the user enters 10, it'll display the first 10 numbers of the triangular series. So far the file name change is working.

The algorithm is here that I used for PHP:http://www.codecodex.com/wiki/Calculate_a_triangle_number

eg . user enters 10. Result in txt file is first 10 numbers in the triangular series = [1, 3, 6, 10, 15, 21, 28, 36, 45]

This is what I have so far but Im not having any luck! At the moment its only writing the number I entered on to the txt file and nothing else! Any ideas?

$number = $_POST['number-entered'];


    foreach ( range(1, 1000) as $i ) {  
    $triangle_numbers[] = $i * ( $i + 1 ) / 2;  

 } 
    //make a file
    $contents = fopen('gs://a1-task22020.appspot.com/triangular_' .$number. ".txt", "w");
    fwrite($contents, $number);

    //open the file

    $contents = fopen('gs://a1-task22020.appspot.com/' . $contents, 'w');

    // re-open the document if you put something in it
    fwrite($contents, $number);

    fclose($contents);


}
}

 

I have a table that shows all the users in my table. Each user is either a user or an admin. I have radio buttons for each user determining if they are a user or an admin


Right now I have each RB group named userlevel0, userlevel1, userlevel2 etc..

How can I get all the groups dynamically? I attempted an html array but failed.

Image name will come from database.
It can be displayed in divs or table cells.
Which is better using divs or table cells?
Can anyone post sample code?
http://img28.imageshack.us/i/44233003.png/

I have a series of string which can have a value or empty. I want to display them with echo.

echo $string1 $string2 $string3; satisfies my need, as it shows available values, but with this method, I will get a PHP notice in my error_logs. What is your suggestion? Do I need to use "if (empty)" or "if(isset)"? The point is I have numerous strings and in each run only few of them have value.

I have some data where each has a timestamp when is was measured, and not all data points will be necessarily measured at the same time.

 

                Time |    Value1 |    Value2 |    Value3 |    Value4
 2020-12-15 00:05:07 |           |      27.6 |           |          
 2020-12-15 00:30:27 |           |           |        26 |          
 2020-12-15 01:20:10 |      53.9 |      25.2 |           |          
 2020-12-15 02:09:44 |           |      26.4 |           |      60.2
 2020-12-15 02:43:19 |        33 |      49.2 |           |          
 2020-12-15 03:04:44 |      30.8 |           |           |        42
 2020-12-15 03:21:46 |           |        54 |           |          
 2020-12-15 03:47:19 |      52.8 |           |      53.3 |          
 2020-12-15 04:26:20 |           |           |      27.3 |          
 2020-12-15 04:45:10 |      37.4 |           |           |          
 2020-12-15 05:24:25 |           |        42 |           |          
 2020-12-15 05:34:49 |      36.3 |           |      41.6 |          
 2020-12-15 05:36:04 |      24.2 |           |           |          
 2020-12-15 06:06:47 |      49.5 |           |           |          
 2020-12-15 07:00:07 |           |           |           |        49
 2020-12-15 07:59:17 |           |      27.6 |           |          
 2020-12-15 08:14:45 |           |           |      48.1 |      51.8
 2020-12-15 08:26:36 |           |           |      53.3 |          
 2020-12-15 08:54:23 |      50.6 |           |           |          
 2020-12-15 09:46:53 |           |           |      58.5 |      43.4
 2020-12-15 10:25:03 |           |           |           |      36.4

 

I am trying to obtain the total value (i.e. value1 + value2 + value3 + value4) and since there is no common time interval, come up with an arbitrary one such as one hour.  It doesn't need to be exact and one option is to linearize each sample between each of their individual timestamps, but ideally I can do a little better.  It has been many, many years, and I recall that least squares regression used to be used for things like this, but I think I would need to the process the entire series for each which I expect would require many polynomials.  I've never used R and it might be an option if necessary.  Not sure if there is anything baked into PHP which would be great.    Any ideas?  Thanks

                Time |Total Value
 2020-12-15 00:00:00 |      27.3
 2020-12-15 01:00:00 |      48.4
 2020-12-15 02:00:00 |        21
 2020-12-15 03:00:00 |        22
 2020-12-15 04:00:00 |        49
 2020-12-15 05:00:00 |        38
 2020-12-15 06:00:00 |        49
 2020-12-15 07:00:00 |        29
 2020-12-15 08:00:00 |        49
 2020-12-15 09:00:00 |        46
 2020-12-15 10:00:00 |        36

 

How to write 2 "if" statements together?

if($userResult==$myResult) and ($userResult<0)
{

Anything wrong with this because I got a parse error ONLY after adding to create this.

<?php
                            $visible = array('Yes', 'No');
                            foreach($visible as $visible):
                            $visible2 = array('yes', 'no');
                            foreach($visible2 as $visible2):
                        ?>