Why does it say $con is an undefined variable when I defined it on line 2?
110001
Using MySQLi from another class in PHP
148080
Brace expansion with a Bash variable - {0..$foo}
124623
\newcommand is undefined control sentence
153192
Why doesn't PHP permit private const?
2005
"Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
140157
Unknown Syntax Error in Code
89549
Can anyone explain this 'variable does not exist error'?
5618
$VAR vs ${VAR} and to quote or not to quote
32339
bash: syntax error near unexpected token `}'
53203
Checking for undefined
144673
Why does this JavaScript code print "undefined" on the console?
72170
Redefining variables in a \foreach loop
25451
What's the difference between :: (double colon) and -> (arrow) in PHP?
93151
Php: can't assign a property value in declaration
7250
Reference - What does this error mean in PHP?
1454
Error "initializer element is not constant" when trying to initialize variable with const
94418
Where do we use the object operator "->" in PHP?