Use PDFlib in Laravel - php

I installed PDFlib (followed the instructions PDFlib in PHP How To) on OS X by adding extension=php_pdflib.so to my php.ini file and it is loaded properly.
(If I run phpinfo(); PDFlib is shown in the list.)
However if I try to use it with
$p = new PDFlib();
I get Parse error: syntax error, unexpected '$p' (T_VARIABLE)
What could cause this error?
EDIT
The error was simply caused by a missing semicolon...
Now I am getting a Class 'App\Http\Controllers\PDFlib' not found which is kind of obvious cause I didn't register it in the controller with use.
I thought new PDFlib() is available for global use after installing?

You're missing out the concept of namespaces. In this casePDFlib is available on the global namespace, which is \. In other words, you can either import it with use PDFlib;, or you can use it directly w/o importing it like this $p = new \PDFlib();.

now i am getting a Class 'App\Http\Controllers\PDFlib' not found.
I pretty much doubt you got PDFlib in your Controllers folder therefore it seems that your code that uses PDFlib simply lacks use to refer proper PDFlib's namespace (or you need to use fully qualified namespaces instead).
If PDFlib is not using namespace then from namespaced code youneed to use \ to reach it, i.e.:
$x = new \PDFlib();

Related

Visual Studio Code PHP Intelephense Keep Showing Not Necessary Error

After the latest update of PHP Intelephense that I get today, the intelephense keep showing an error for an undefined symbol for my route (and other class too), there is no error like this before and it's bothering me.
Here is the error screenshot :
And this is my code :
Route::group(['prefix' => 'user', 'namespace' => 'Membership', 'name' => 'user.'], function () {
Route::get('profile', 'ProfileController#show')->name('profile.show');
Route::patch('profile', 'ProfileController#update')->name('profile.update');
Route::patch('change-password', 'ChangePasswordController#change')->name('change-password');
Route::get('role', 'ProfileController#getRole')->name('profile.role');
Route::get('summary', 'SummaryController#show')->name('summary');
Route::get('reserved', 'AuctionController#reservedAuction')->name('reserved');
});
Actually there's no error in this code but the intelephense keeps showing an error so is there a way to fix this?
Intelephense 1.3 added undefined type, function, constant, class constant, method, and property diagnostics, where previously in 1.2 there was only undefined variable diagnostics.
Some frameworks are written in a way that provide convenient shortcuts for the user but make it difficult for static analysis engines to discover symbols that are available at runtime.
Stub generators like https://github.com/barryvdh/laravel-ide-helper help fill the gap here and using this with Laravel will take care of many of the false diagnostics by providing concrete definitions of symbols that can be easily discovered.
Still, PHP is a very flexible language and there may be other instances of false undefined symbols depending on how code is written. For this reason, since 1.3.3, intelephense has config options to enable/disable each category of undefined symbol to suit the workspace and coding style.
These options are:
intelephense.diagnostics.undefinedTypes
intelephense.diagnostics.undefinedFunctions
intelephense.diagnostics.undefinedConstants
intelephense.diagnostics.undefinedClassConstants
intelephense.diagnostics.undefinedMethods
intelephense.diagnostics.undefinedProperties
intelephense.diagnostics.undefinedVariables
Setting all of these to false except intelephense.diagnostics.undefinedVariables will give version 1.2 behaviour. See the VSCode settings UI and search for intelephense.
Version 1.3.0 has flaw IMO.
Downgrade to version 1.2.3 fixes my problem.
I'm on
Laravel 5.1
PHP 5.6.40
use Illuminate\Support\Facades\Route;
Warning Disappeared after importing the corresponding namespace.
Version's
Larvel 6+
vscode version 1.40.2
php intelephense 1.3.1
If you see this immediately after adding a new Vendor class, be sure to run the VScode command (control-shift-P) Index Workspace
In my case, for some reason, vendor folder was disabled on VS Code settings:
"intelephense.files.exclude": [
"**/.git/**",
"**/.svn/**",
"**/.hg/**",
"**/CVS/**",
"**/.DS_Store/**",
"**/node_modules/**",
"**/bower_components/**",
"**/vendor/**", <-- remove this line!
"**/resources/views/**"
],
By removing the line containing vendor folder it works ok on version Intelephense 1.5.4
This solution may help you if you know your problem is limited to Facades and you are running Laravel 5.5 or above.
Install laravel-ide-helper
composer require --dev barryvdh/laravel-ide-helper
Add this conditional statement in your AppServiceProvider to register the helper class.
public function register()
{
if ($this->app->environment() !== 'production') {
$this->app->register(\Barryvdh\LaravelIdeHelper\IdeHelperServiceProvider::class);
}
// ...
}
Then run php artisan ide-helper:generate to generate a file to help the IDE understand Facades. You will need to restart Visual Studio Code.
References
https://laracasts.com/series/how-to-be-awesome-in-phpstorm/episodes/16
https://github.com/barryvdh/laravel-ide-helper
You don't need to downgrade you can:
Either disable undefined symbol diagnostics in the settings -- "intelephense.diagnostics.undefinedSymbols": false .
Or use an ide helper that adds stubs for laravel facades. See https://github.com/barryvdh/laravel-ide-helper
1.3.1 fixed it.
Just update your extension and you should be good to go
There is an other solution since version 1.7.1 (2021-05-02)
You can now tell where intelephense should look for a dependency, for example vendor which is the most common.
"intelephense.environment.includePaths": [
"vendor"
],
Furthermore, it even bypass the VSCode rule
"files.exclude": {
"**/vendor": true
},
You can read more in the changelog here
To those would prefer to keep it simple, stupid; If you rather get rid of the notices instead of installing a helper or downgrading, simply disable the error in your settings.json by adding this:
"intelephense.diagnostics.undefinedTypes": false
Here is I solved:
Open the extension settings:
And search for the variable you want to change, and unchecked/checked it
The variables you should consider are:
intelephense.diagnostics.undefinedTypes
intelephense.diagnostics.undefinedFunctions
intelephense.diagnostics.undefinedConstants
intelephense.diagnostics.undefinedClassConstants
intelephense.diagnostics.undefinedMethods
intelephense.diagnostics.undefinedProperties
intelephense.diagnostics.undefinedVariables
This is really a set of configurations for your editor to understand Laravel.
If you want to configure it all manually, here is the repo. This is for both VS code and PhpStorm.
Or if you want you can download this package.(I created) recommended to install it globally.
And then just run andylaravel setupIDE. this will configure everything for you according to the fist repo.
No, the errors occurs only after the Intelephense extension is automatically updated.
To solve the problem, you can downgrade it to the previous version by click "Install another version" in the Intelephense extension. There are no errors on version 1.2.3.
Had same problem in v1.7.1. It was showing error on built-in functions. But just found the solution: go to extension setting #ext:bmewburn.vscode-intelephense-client and disable one by one Intelephense›Diagnostics: and you will see the error showing will stop.
For anyone going through these issues and uneasy about disabling a whole set of checks, there is a way to pass your own custom signatures to Intelephense.
Copied from Intelephese repo's comment (by #KapitanOczywisty):
https://github.com/bmewburn/vscode-intelephense/issues/892#issuecomment-565852100
For single workspace it is very simple, you have to create .php file
with all signatures and intelephense will index them.
If you want add stubs globally, you still can, but I'm not sure if
it's intended feature. Even if intelephense.stubs throws warning about
incorrect value you can in fact put there any folder name.
{
"intelephense.stubs": [
// ...
"/path/to/your/stub"
]
}
Note: stubs are refreshed with this setting change.
You can take a look at build-in stubs here:
https://github.com/JetBrains/phpstorm-stubs
In my case, I needed dspec's describe, beforeEach, it... to don't be highlighted as errors, so I just included the file with the signatures /directories_and_paths/app/vendor/bin/dspec in my VSCode's workspace settings, which had the function declarations I needed:
function describe($description = null, \Closure $closure = null) {
}
function it($description, \Closure $closure) {
}
// ... and so on
use Illuminate\Support\Facades\Route;
Add the above Namespace
In your web.php
Add this line of code
use Illuminate\Support\Facades\Route;
Then you are done, again if you got Auth error then add this line of code
use Illuminate\Support\Facades\Auth;
Thanks.
The only working solution I found is:
Set language mode to Blade (use extension: Laravel Blade formatter)
It will resolve the issue. Otherwise, follow this procedure.
These classes don't exist in the workspace. Laravel creates them at runtime. As such they are reported as undefined. The solution is to either provide stub definitions
https://github.com/barryvdh/laravel-ide-helper
or turn off the diagnostics (intelephense.diagnostics.undefinedTypes).
I had the same issue and the following seemed to have addressed the issue.
a) Updated to latest version 1.3.5 and re-enabled all the diagnosis settings.
I was still getting the messages
b) Added the vendor folder with the dependent libraries to the workspace
This seems to have solved the problem.
I recently fixed my own issue. by going file > preferences
and I search for intelliphense
The section that has file to exclude, I noticed vendor folder was added.
I removed it, now all my laravel files are indexed

PHP class 'Ds\Map' not found

In PHP (version 7.1), I am attempting to use a MAP as opposed to a two dimensional array to handle implicit data type conversion across different data type groups. However, I am receiving the following run-time error:
Class 'Ds\Map' not found
The error occurs on this line of code:
protected $hive_data_type_group_map = new \Ds\Map();
I have checked online, but there is little documentation on Ds\Map, even on PHP's website (click here). Does anyone know how to fix this?
Data Structures is not a built-in PHP extension.
It needs to be installed before use. The installation instructions are available on php.net.
For windows
Download compiled-dll file "php_ds.dll" from https://pecl.php.net/package/ds. Place it in your dir wamp\bin\php\[your_php_version_folder]\ext and include it in your ".ini" file.
It worked for me.
the easiest way on ubuntu:
pecl install ds
Reference: https://www.php.net/manual/en/ds-deque.allocate.php

ZipArchive not installed in xampp?

I have newest version of XAMPP and php version 5.6.3, but I can't use ZipArchive. I've downloaded php_zip.dll and placed it in ext dir, I've added extension=php_zip.dll but after server reset I have warming :
"Module 'zip' already loaded"
I still see error: ZipArchive not found ...
using:
$zip = new ZipArchive();
returns error:
Fatal error: Class 'Att\Controller\ZipArchive' not found in ...
OK, given the additional information you added upon my suggestion in the comment things become more clear now. This looks like you have a namespacing issue here: php tries to locate the class Att\Controller\ZipArchive, not the class ZipArchive. This is probably the case because you try to use the class inside a namespaced script. In that case php will assume all class names as local to the general namespace as declared at the beginning of the script unless they are noted with a specific namespace reference.
Try makeing the class name to reference the global namespace explicitly. So instead of
$zip = new ZipArchive();
do this:
$zip = new \ZipArchive;
(Note the back slash (\) before the class name. Also you can drop the empty brackets trailing it, since they are empty.)
Now php will try to locate a class called "ZipArchive" in the global namespace (\) and (hopefully) succeed... This is a general effect of namespacing in php and has nothing to do with the specific class you are trying to use.
You may want to read a bit about php and namespaces. Take a look into the documentation: http://php.net/manual/en/language.namespaces.php
stop the xampp and then kindly remove the starting semicolon ( ; ) before ;extension=zip from your xampp/php/php.ini the following code, and start xammp again .

Cannot use X as Y because the name is already in use, even though it's not

I'm using PHP 5.4, and have a PSR-0 class structure similar to the following.
A\Library\Session.php:
namespace A\Library;
class Session { ... }
My\Application\Session.php:
namespace My\Application;
class Session { ... }
My\Application\Facebook.php:
namespace My\Application;
use A\Library\Session;
class Facebook { ... }
When I try to run the application, I get the following error:
Cannot use A\Library\Session as Session because the name is already in use in My\Application\Facebook.php
Even though it's not, at least not in this file. The Facebook.php file declares only the Facebook class, and imports exactly one Session class, the A\Library one.
The only problem I can see is that another Session class exists in the same namespace as the Facebook class, but as it was never imported in the Facebook.php file, I thought it did not matter at all.
Am I wrong (in that case please point to the relevant documentation), or is this a bug?
There is a bug confirmed in PHP that may affect the behavior you see. It is supposed to fatal error, but with opcache enabled, it may still execute flawlessly.
https://bugs.php.net/bug.php?id=66773
If it still concerns you, please vote for the bug.
No, this is not a bug. As mentioned in Using namespaces: Aliasing/Importing
use A\Library\Session;
is the same as:
use A\Library\Session as Session;
So try using something like:
use A\Library\Session as AnotherSessionClassName;
The only problem I can see is that another Session class exists in the
same namespace as the Facebook class, but as it was never imported in
the Facebook.php file, I thought it did not matter at all.
Yes, it does matter. This is why you don't need to "import" classes from the same namespace. If you have conflicting names from different namespaces, you need to alias the class.
namespace My\Application;
use A\Library\Session as ASession; // choose a proper alias name here
class Facebook { ... }
I've read the thread about the issue, but I tested on many PHP versions (php 5.5, 5.6, 7.*, x32, x64, vc11, vc14, vc5). I'm using Laravel with Laragon. But, when I build up the server with php artisan serve (and open the server at http://localhost:8000) I have the problem of "the namespace that some Class was already used" and stuff.
I tested with and without opcache extension and nothing works, then I tested the virtual domain that Laragon provides and... voila, the error just disappeared and now I can work OK. I don't know what was happening, my namespaces were OK, I had an alias but the same code works in many machine without problem (AWS, local, prod, dev, etc) but only in my machine I had the problem just as I described it.
So, if someone is working with Laravel (5.1) and is having this issue, try the virtual host of Laragon.

Getting an error using constants

I have a lot of pages, all of which require the file characters.php. This file contains constants which define many things in my website. They are defined like this, for example:
const $humanHEALTH = 1.1;
Everything works properly running it in my localhost using WAMP, but when I upload it to an online host I get this error:
Parse error: syntax error, unexpected T_CONST
I used phpinfo() on one of the pages and the PHP version is 5.2.17.
Any help would be greatly appreciated.
In PHP 5.2 it's define('constant_name', 'value');
Support for const outside of class definitions was not added until PHP 5.3, so your 5.2.x is too old to use this. See http://php.net/const
A constant must not have any $ sign at the beginning. Try const HUMAN_HEALTH = 1.1 instead.
As Marc B mentioned, const outside classes is only available up from PHP 5.3.
To add possible causes to those already mentioned: use of the $ character, and old PHP version; I leave this clarification from the manual that was useful to detect the problem in my case:
As opposed to defining constants using define(), constants defined
using the const keyword must be declared at the top-level scope
because they are defined at compile-time. This means that they cannot
be declared inside functions, loops, if statements or try/ catch
blocks.

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