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Questions tagged [undefined-function]

An undefined function is a function that fails to execute when called due to the body of the function not being available to the program, compiler, or interpreter, looking for a function definition.

143 questions
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Undefined function mysql_connect()

I have ran aptitude install php5-mysql (and restarted MySQL/Apache 2), but I am still getting this error: Fatal error: Call to undefined function mysql_connect() in /home/validate.php on line 21 phpinfo() says the…
user1765369
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PHP fileinfo is undefined function

Whenever I try to get the mime content type from php, it echos: Fatal error: Class 'finfo' not found in /home/jobynadel/finadel.com/video/finfo.php on line 4 or Fatal error: Call to undefined function finfo_open in…
Jobynad
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Why does the C++ linker allow undefined functions?

This C++ code, perhaps surprisingly, prints out 1. #include std::string x(); int main() { std::cout << "x: " << x << std::endl; return 0; } x is a function prototype, which seems to be viewed as a function pointer, and C++…
chmullig
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Undefined method 'pluralize' for #

Not sure why this has decided to stop working. customers_controller.rb redirect_to customers_url, notice: pluralize(@imported_customers.size, "customer") + " imported!" And I'm getting the error: NoMethodError: undefined method…
Wes Foster
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Call to undefined function password_hash()

I am running php version 5.4.16 on localhost right now, while I am developing my site. I want to use password_hash(), but I keep getting this error: Fatal error: Call to undefined function password_hash() in /dir/to/file.php on line 123 Why is…
user3162085
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pcntl_fork() returning, Fatal error: Call to undefined function pcntl_fork()

I'm trying to fork a command line run XAMPP php process using pcntl_fork(). When I run the command below: $pid = pcntl_fork(); if($pid == -1){ file_put_contents('testlog.log',"\r\nFork Test",FILE_APPEND); return 1; //error } else if($pid){ …
Ben Pearce
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Laravel: Call to undefined function Symfony\Component\Console\mb_convert_variables()?

I'm running a vanilla Amazon EC2 server. I installed PHP 5.5.21 myself. My web application is built on Laravel. For weeks, everything was working flawlessly. Now, however, when running the Laravel command to update the database schema: php…
clone45
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1 answer

Are all unused undefined methods allowed?

Here’s a class with an undefined method. It seems compilers allow instances of this class to be constructed, so long as the undefined member function is never called: struct A { void foo(); }; int main() { A a; // <-- Works in both…
CodeBricks
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How to make function useable only for a certain data constructor of an ADT?

I'm currently playing around with ADTs in Haskell and try to build an ADT Figure: data Figure = Rect { x :: Integer, y :: Integer, width :: Integer, height :: Integer} | Circle { x :: Integer, y :: Integer, radius :: Integer} …
Markus Weninger
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touchableopacity onpress function undefined (is not a function) React Native

I want to be able to navigate to a new screen after tapping the TouchableOpacity button but I receive an error which says _this3.handleThisTap is not a function. (In '_this3.handleThisTap()','_this3.handleThisTap' is undefined) import React, {…
iprateekk
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PHP Fatal error: Call to undefined function Laravel tinker

I'm trying to establish a relation between two tables (Roles and Abilities) but when I run the function allowTo() it says is undefined. I tried to clear the cache and config but didn't do anything. If anyone could help that'd be great, thanks! Model…
Becks
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Angular 5 typeerror:

I am using Angular 5 in a project and i get a typescript error: ERROR TypeError: Cannot read property 'indexOf' of undefined What my code is supposed to do is to update the template on input change like this: The template:
Gabriel
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Error Undefined function in Erlang

This on compiling gives {ok,assignment5}. three_a(F) -> fun(Y) -> lists:foldl(F,0,Y). After writing this F1=assignment5:three_a(fun(X,Sum) -> X+Sum end). Gives ** exception error: undefined function assignment5:three_a/1 Please help out!
Mishal Shah
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WordPress wp-cli generates error: "Call to undefined function getallheaders"

The wp-cli tool is a very handy way to execute WordPress tasks from the command line. However if the WordPress Site contains plugins or theme initialization code that calls the PHP getallheaders method then wp-cli will not work. It will instead…
jambroseclarke
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Cloud9 cURL not working

I was just fiddling with php on cloud9 the other day and I can upon this problem that cURL did not seem to be working. When you make a php workspace in cloud9, there is autocomplete for cURL so they must know about it. Here is the…
Holger Kibur
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