Questions about defining variables

Questions about defining variables Questions about defining variables

phpcn_u81338 2017-12-24 00:35:38 0  2  1248

Undefined variable in component

My server works in Linux via apache2, but works fine in the development environment via artisan service on a Windows machine. The error is undefined variable $washProgramresources/views/components/expedition-data.blade.php<div>Programa{{$washProgram->name}}</div&

P粉709307865 2023-09-06 10:48:25 0  1  852

报错："Notice: Undefined variable", "Notice: Undefined index", "Warning: Undefined array key", 还有"Notice: Undefined offset" using PHP

I'm running a PHP script but I keep getting errors like this: Notice: Undefined variable: my_variable_name in C:\wamp\www\mypath\index.php on line 10 NOTE: Undefined index: my_index at line 11 of C:\wamp\www\mypath\index.php Warning: Undefined array key 'my_index' in C:\wamp\www\mypath\index.php ...

P粉046878197 2023-07-20 11:17:02 0  2  879

Undefined variable problem in php login system/unity

I get this error: Warning: Undefined variable $loginUser username does not exist in C:\xampp\htdocs\BNP\Login.php on line 21. I tried other fixes but it returns the same error message. Can anyone help? <?php//variablesforconnectingtoDB$servername="localhost";$username="root";$...

P粉322106755 2024-03-29 21:16:04 0  1  426

Laravel template page variable is undefined?

1. When the page accesses the blad template page, the variable is undefined. 2. Code {code...} 3. It will prompt Undefined variable: flag_result 4. How to solve it? PS: You can return view('importexcel',compact('flag_result','fileType')); in the control layer. I am the first...

天蓬老师 2017-05-31 10:31:47 0  3  1013

Using PHP's "Caution: undefined variable", "Caution: undefined index", "Warning: undefined array key" and "Caution: undefined offset"

I'm running a PHP script and continue to receive errors like this: NOTE: Undefined variable: my_variable_name in C:\wamp\www\mypath\index.php on line 10 NOTE: Undefined index: my_index C:\wamp\www\ mypath\index.php line 11 Warning: Undefined array key 'my_index' in C:\wamp\www\mypath\index.php line ...

P粉851401475 2023-08-23 11:45:50 0  2  526

What to do if $db->quary Undefined variable error occurs

What to do if $db->quary Undefined variable error

移动用户-1190279 2019-05-03 16:06:17 0  1  1045

Reference: What is variable scope, which variables can be accessed from where, and what is an "undefined variable" error?

NOTE: This is a reference question about PHP variable scoping. Please close any other questions matching this pattern as duplicates. In PHP, what is variable scope? Can variables in one .php file be accessed in another file? Why do I sometimes get "undefined variable" errors?

P粉018653751 2023-07-23 19:17:03 0  2  569

python - How to define nested variables in flask jinjia2

In jinjia, as shown below, I defined a variable number {code...} file_dict is a dict type variable. I want to reference the key in file_dict to find out the value of the key {{number}} in the file_dict. {Code...} It seems illegal to define it like the above, no...

迷茫 2017-06-22 11:51:50 0  1  1255

Warning: Undefined variable $username There is something wrong with this

Warning: Undefined variable $username I also handled this in the MyTpl class extract($this->value,EXTR_OVERWRITE);

大漠清风 2023-02-20 15:19:02 0  1  604

Using variables defined in methods in templates

This is my first time using Vue (v2 not v3) and I've been trying to use variables inside templates (defined inside methods). My simplified code: <template><divclass="container"@mouseover="isHovered=true"@mouseleave="isHovered=false"><divclass=&quo

P粉681400307 2024-04-06 18:10:25 0  2  683

Reference: What is variable scope, which variables can be accessed from where and what is an "undefined variable" error?

NOTE: This is a reference question dealing with variable scope in PHP. Please close any of the many questions that fit this pattern as duplicates of this question. What is "variable scope" in PHP? Can variables in one .php file be accessed in another .php file? Why do I sometimes get "...

P粉023650014 2023-10-19 10:50:15 0  2  625

Design a user class USER. The variables in the class include user name, password and variables that record the number of users. Define class constructors, getters, and setters

Design a user class USER. The variables in the class include username, password and variables that record the number of users. Define the constructor method of the class, the methods for getting and setting passwords, and the methods for displaying user information.

李雅琦 2020-12-21 15:09:28 0  1  1983

Use of undefined constant USER_ID - assumed 'USER_ID'

Use of undefined constant USER_ID - assumed 'USER_ID' shows that the constant I defined is wrong.

晨曦 2017-09-16 01:44:57 0  1  1737

How constants are defined in java.

{Code...} What are the characteristics of these two ways of defining constants? Which method is more recommended during use?

我想大声告诉你 2017-06-12 09:19:32 0  2  960

javascript - variable scope issue

{Code...} Is name a global variable? Why is it undefined in the immediate execution function?

伊谢尔伦 2017-05-19 10:07:17 0  2  414

php - Questions about defining variables

I am a beginner. I used phpstorm to write the following code at home. The code that runs without error is as follows: &lt;?php$x=5; // Global variable function myTest(){ {code...} }myTest( );echo "&lt;p&gt;Test function external variables:&lt;p&gt;";echo "Variable ...

过去多啦不再A梦 2017-06-07 09:23:08 0  5  719

How to pass class-defined variables to class methods in PHP?

I want to pass the value of a variable I defined in a class to its method. I know I can set a default value using the = symbol in the parentheses of the method, but this seems redundant since I already have the variable defined. Is this possible? classCar{var$num_wheels=4;var$model="BMW";f...

P粉436688931 2023-09-13 21:12:48 0  1  577

Java enum variables cannot be defined repeatedly in cases?

I need to assign a value to a variable based on the content of the string, but the variable type is different. My current error is {code...} idea, repeated definition. But this is an enumeration and will not be repeated. How do I accomplish my goal?

黄舟 2017-05-17 10:09:15 0  1  908

Variable in blade is undefined when passing variable from controller Laravel

So I want to return some strings from the model and controller, but it always says undefined variable, although when I check with dd($) it successfully passes a) and dd($b). What did i do wrong? about.blade：@extends('layout.template');@section('homeContainer');<p>{{$a}}</p><br><...

P粉056618053 2023-08-31 15:58:04 0  2  465