Jump to content

maxxd

Gurus
 View Profile  See their activity

  • Posts

    1,660

  • Joined

  • Last visited

  • Days Won

    52

 Content Type 

Posts posted by maxxd

    PHP pathing difference when running on CLI vs from bash script?

    in PHP Coding Help

    Posted · Edited by maxxd

    Hey y'all.

    Probably a dumb question here but I'm at a loss. I've got a PHP service script that has an include, written as so: 

    $config = new Config('config/config.json');

    The config directory is next to the PHP script and does contain the config.json file, so when I run this from the CLI everything works great. However, I've got about 17 PHP services I need to start and really don't feel like typing them all out, so I've written a shell script that does this: 

    #!bin/bash


cd /path/to/my/script

/usr/local/bin/php ./my-script.php

    This does start the service, but it bombs out because it can't find the config.json file.

    If I change the PHP to  

    $config = new Config('./config/config.json');

    it works as expected from the shell script. Updating the files is technically possible, but fraught right now for reasons I can't really get into (sorry). Anybody know what the difference is, or have any ideas on how to get around this?

    PHP data matching dropdown with qr code scan

    in PHP Coding Help

    Posted

    Even after your last post here I don't understand what problem you're having. You keep saying you're stuck and you need to match the QR scan with the drop-down. Is there an error message? What is the result of the QR scan? What is the value of the drop-down? Is there one or two drop-downs? What exactly isn't matching?

    Explain what you want to happen and what is currently happening; copy and paste any error messages you're getting, and if you're not getting any error messages make sure you've got error reporting turned on and display errors enabled. And worse come to worst, check the server logs in case it's a server error and not a php error.

    Inventory System

    in PHP Coding Help

    Posted · Edited by maxxd

    This could be a language barrier thing, but I'm a bit confused.It sounds like the user will select a material from the second drop-down then scan a QR code that identifies the material they're scanning and that scan should match the selection from the second drop-down? If so, why? What's the thought behind making the user select a material from the second drop-down and then match that to the QR scan?

    Also, because the problem isn't clear at this point show the code you have, as well as any error messages or unexpected results you're getting. Assuming there's no error message and the results are unexpected, give us the results you were expecting.

    • Like 1

    How do I control the last character of a string?

    in CSS Help

    Posted

    If you're desperate to do it and kicken's far better suggestions can't or don't work for you, you can use JavaScript to find the last letter and remove it or wrap it in a span that  you can then style separately. Assuming you have a way to target the specific paragraph with the last character to remove, of course.

    Joining two tables as sums with individual records

    in MySQL Help

    Posted

    8 minutes ago, 684425 said:

    After that every customer is assigned a unique invoice

    Sure, but how do you connect the invoice to the customer? Again, I assume that your customers can have more than one invoice throughout all of history, so that's the join you need - you need to link customer ID to customer ID between the tables, not customer ID to invoice ID.

    • Like 1

    mkcert and docker question

    in PHP Coding Help

    Posted

    Hey y'all.

    I'm not sure which sub-forum is most appropriate for this question, so I'm putting it here because here's where I go first. Anyway - does anybody use mkcert with Docker? It seems like a perfect solution to enable local SSL-enabled development and testing, but I'm still getting the 'Potential Security Risk' warning when I hit my local dev site.

    The problem is that the system I'm working on now is all about php-based "micro-services" that talk to each other via AWS SQS queues, and some (one in particular) are throwing an "Unknown SSL protocol error" when using a super old version of the AWS PHP API to move a file into an S3 bucket hosted on my localstack environment. It's not helped by the fact that I have to mix php 7.2 and 5.6 in separate docker containers in this image to get everything to play mostly OK with each other.

    Sorry for the rambling - it's late. My question is this: what am I missing in my mkcert setup that I'm still getting the authentication error in the browser? This is what I've got specific to this issue (I've installed wget and libnss3-tools and my image is based on php:7.4-apache:

    Dockerfile: 

    # create the locally trusted SSL certificates
RUN mkdir /usr/local/.ssh
RUN wget https://github.com/FiloSottile/mkcert/releases/download/v1.4.1/mkcert-v1.4.1-linux-amd64
RUN mv mkcert-v1.4.1-linux-amd64 mkcert
RUN chmod +x mkcert
RUN cp mkcert /usr/local/bin/
RUN mkcert -install
RUN mkcert -cert-file /usr/local/.ssh/laravel-local.pem -key-file /usr/local/.ssh/laravel-local-key.pem '*.laravel.local' laravel.local localhost 127.0.0.1

    Apache.conf: 

    <VirtualHost *:80>
    ServerAdmin webmaster@localhost.com
    DocumentRoot "/var/www/html/public"
    ServerName "laravel.local"
    <Directory "/var/www/html/public/">
        AllowOverride All
    </Directory>
</VirtualHost>
<VirtualHost *:443>
    DocumentRoot "/var/www/html/public"
    ServerName "laravel.local"
    SSLEngine On
    SSLCertificateFile "/usr/local/.ssh/laravel-local.pem"
    SSLCertificateKeyFile "/usr/local/.ssh/laravel-local-key.pem"
</VirtualHost>

    docker-compose: 

    laravel:
    build:
      context: .
    image: laravel:new
    volumes:
      - ../project:/var/www/html
      - ../logs/:/var/log/
    ports:
      - 8001:80
      - 443:443
    environment:
      - ENVIRONMENT=development
    networks:
      - laravel

    Obviously there's more to each of the files, but I've included the pertinent parts - let me know if more would be helpful.

    Handling several operations on one page

    in PHP Coding Help

    Posted

    You'll have to define "isn't working". The following works for me as expected: 

    <?php
if($_SERVER['REQUEST_METHOD'] == 'POST'){
	print("<pre>".var_export($_POST, true)."</pre>");
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Testing</title>
</head>
<body>

	<form method="post" name="firstForm">
		<button id="whatever" name="click" value="button_1">Click Me!</button>
		<button id="whatever2" name="click" value="button_2">Click Me, Too!</button>
	</form>

</body>
</html>

     

    Handling several operations on one page

    in PHP Coding Help

    Posted

    5 hours ago, Barand said:

    a <button> element can have a value attribute independent of its label

    True. This would solve the issue. I want to say (though to be honest I'm not entirely confident in my memory so don't quote me) that some browsers have issues passing button and submit element attributes on submission? Like if you name your submit button and then check for that index in the $_POST array being set it doesn't always catch it - I want to say it's mostly IE, which probably doesn't really matter any more anyway.

    @SaranacLake The reason your third form results are off is that both the buttons have the same name, and they're both submitted with the form. So the value of `which_choice_did_i_make` is overwritten and will always be 'Form4_Input2'. The thing about it is, if you're using AJAX and JavaScript you can easily use one form - the onClick event tells the JS event handler which button was clicked, that information is put into the data array and passed to the PHP script. No hidden fields, one form, no page refresh necessary. However, the way you're doing it, there's no way the hidden field can tell the PHP script which button was clicked - all the data is always submitted. Just the act of clicking an HTML button doesn't trigger any special actions that will bind a field value to a field (obviously this can be done with JavaScript, but it won't happen in plain old HTML).

    Assuming my memory is as bad as it seems to be these days, Barand's suggestion is the way to go for you - check the value of the button element name in $_POST and go from there. This allows you to have one form, no hidden fields,  with mandatory page refresh.

    • Like 1

    variable variables and other 90's stuff...

    in PHP Coding Help

    Posted

    5 hours ago, jodunno said:

    In addition, one should not blindly loop over POST data. Stop telling people to do this. 

    <?php
if($_SERVER['REQUEST_METHOD'] == 'POST'){
  foreach($_POST['options'] as $option){
    doSomething($option);
  }
}
?>

<form method="post">
  <input type="text" name="options[]" value="First Option">
  <input type="text" name="options[]" value="Second Option">
  <input type="text" name="options[]" value="Third Option">
  <input type="text" name="options[]" value="Fourth Option">
  <submit>
</form>

    This is a very common method of handling post input. It's also a lot easier and more efficient than trying to loop over every sku in the database and see if it's set in the $_POST array one by one.

    Handling several operations on one page

    in PHP Coding Help

    Posted 

    <?php
if($_SERVER['REQUEST_METHOD'] == 'POST'){
	print("<p>{$_POST['which_choice_did_i_make']}</p>");
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Testing</title>
</head>
<body>

	<form method="post" name="firstForm">
		<button id="whatever" name="click1">Click Me!</button>
		<input type="hidden" name="which_choice_did_i_make" value="firstForm">
	</form>
	
	<form method="post" name="secondForm">
		<button id="whatever2" name="click2">Click Me, Too!</button>
		<input type="hidden" name="which_choice_did_i_make" value="secondForm">
	</form>

</body>
</html>

    See what happens when you click the buttons.

    Handling several operations on one page

    in PHP Coding Help

    Posted

    OK - that clears up my confusion. Maybe it's my cynical nature, but I couldn't see someone not choosing the "upgrade at a discount" option after their account had expired.

    Given that, if you're processing all of it using the same script I would recommend using separate forms on the same page, each with a single hidden field to denote which form the user is filling in (which option they've chosen). Just remember to make sure on the back end that the user is eligible for the choice they've submitted.

    Handling several operations on one page

    in PHP Coding Help

    Posted

    I guess I'm getting hung up on why the first two options you describe show up on the same page as the last three. You say the first two are available to users before a certain date, the last three are available to the same user after the certain date. So why do you ever have all five choices on the same page? All that being said, I'm not privy to the business logic and that will dictate how you handle the situation. I'm assuming in my comments that you're handling all the possibilities in the same form processing script, but that's not necessarily true - this means you can set it up in a way very different than the one I'm thinking of and describing.

    The big takeaway is there's really not a difference. Your user will more than likely not be able to tell if there's one form on a page or a million. It really comes down to how you process the submitted data and how willing you are to have similar or related code in different places.

    Efficient way to add / remove new textarea data

    in PHP Coding Help

    Posted · Edited by maxxd

    Why do you need to track each line individually? It seems like overkill to me, but maybe the business logic has a reason for it... I mean, honestly, a database of 10,000 records really isn't that big a deal, but I think it would be more efficient to track versions of the full text area contents. If you need to you can check the differences in PHP on display using something like xdiff_string_diff(), or you can track the character numbers changed in a separate table and highlight those changes by using those character offset values and substr() or something.

    Handling several operations on one page

    in PHP Coding Help

    Posted

    1 minute ago, SaranacLake said:

    For the second section, 2 of the buttons read "Checkout" so at the very lest I need hidden fields.

    Sorry, yes - of course you need a to know which option the user has chosen. So if you're doing it with a button per option then perhaps hidden fields on separate forms on the same page could be the best way to go. If you've got a drop-down, one form without a hidden field is fine. Totally up to you - the user shouldn't be able to tell, and there's no hit to page load or usability either way.

    The one thing I would recommend is you don't name several different buttons different things in the same form - as far as I know there are still some browsers in use that don't pass the name attribute of a button.

    variable variables and other 90's stuff...

    in PHP Coding Help

    Posted

    Please note, there's a massive difference between this:

    2 hours ago, jodunno said:

    <input type="text" name="1444" value="12.00">

    and this:

    4 hours ago, mac_gyver said:

    echo "<label>$sku: <input type='text' name='sku[$sku]' value='$price'></label><br>";

    It's not just that mac_gyver's is output from PHP. Set up your form to let you use arrays in it's processing and your life will be much easier. Jodunno's code is technically sufficient, but you're going to find yourself jumping through hoops to figure out what the $_POST key you're looking for is, whereas you can run a simple loop with mac_gyver's code.

    Understand, I'm not bashing Jodunno's code, s/he was very clear that this was just example code written rather quickly - I just want to make sure the example isn't taken too literally.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.