PHP class not found but it s included

Question

I m including a PHP class with  require once  ENGINE   classUser php      but when the code is executed i receive this error      Fatal error  Class  User  not found in   C  xampp htdocs WebName resources engine ajax signup php on line 12   I still can t figure out what s the problem  I m 99  sure it s correct   The   ENGINE  is correct  and the class is correct too  Netbeans suggests me class methods and variables    signup php    lt  php     Created on  13 12 2011    Author          Description  User signup procedure       require once     settings php    require once  ENGINE   classUser php      user   new User     user- gt createUser   POST  username      POST  email      POST  password         gt    classUser php    lt  php     Created on  13 12 2011    Author          Description  This class manages users       require once  settings php    require once  LIBRARY   cassandraphp cassandra php     class User        public function createUser  username   email   password            cassandra   Cassandra  createInstance  CASSANDRASERVER            cassandra- gt set                   user    username                  array                       ID    gt  uniqid                         Username    gt   username                       Email    gt   email                       Password    gt   password                                          gt

User · Answer

The problem went away when I did  sudo service apache2 restart

User · Answer

Double check your autoloader s requirements  amp  namespaces    For example  does your autoloader require your namespace to match the folder structure of where the file is located  If so  make sure they match  Another example  does your autoloader require your filenames to follow a certain pattern is it case sensitive  If so  make sure the filename follows the correct pattern  And of course if the class is in a namespace make sure to include it properly with a fully qualified class name   Path ClassName  or with a use statement at the top of your file

User · Answer

My fail might be useful to someone  so I thought I would post as I finally figured out what the issue was  I was autoloading classes like this  define  quot PROJECT PATH quot     DIR         Autoload class definitions function my autoload  class        if preg match    A w  Z     class             include PROJECT PATH     classes      class     class php            spl autoload register  my autoload     In my  classes folder I had 4 classes  dbobject class php meeting class php session class php user class php  When I later created a new class called  cscmeeting class php  I started getting the can t load DbObject class  I simply could not figure out what was wrong  As soon as I deleted cscmeeting class php from the directory  it worked again  I finally realized that it was looping through the directory alphabetically and prior to cscmeeting class php the first class that got loaded was cscmeeting class php since it started with D  But when I add the new class  which starts with C it would load that first and it extended the DbObject class  So it chocked every time  I ended up naming my DbObject class to  dbobject class php and it always loads that first  I realize my naming conventions are probably not great and that s why I was having issues  But I m new to OOP so doing my best

User · Answer

In fact  it s a very old thread but useful     When namespace declaration is part of your php class file  this kind of weird errors tends to appear    Solution  Use namespace with    your code shows like this    lt  php  namespace path to lib    require once  folder php class file where namespace declaration is part of it php      YOUR CODE HERE     lt  php     gt

User · Answer

Check File Permissions Check File size    Sometimes an inaccessible or corrupted file would be the problem  as was in my case

User · Answer

First of all check if  ENGINE   classUser php  is a valid name of existing file  Try this   var dump file exists  ENGINE   classUser php

User · Answer

Check your file permissions for the correct linux user for classUser php

User · Answer

After nearly two hours of debugging I have concluded that the best solution to this is to give the file name a different name to the class that it contains  For Example   Before example php contains    lt  php  class example         Solution  rename the file to example class php  or something like that   or rename the class to example class  or something like that   Hope this helps

User · Answer

I had this problem and the solution was namespaces  The included file was included in its own namespace  Obvious thing  easy to overlook

User · Answer

If you ve included the file correctly and file exists and still getting error  Then make sure  Your included file contains the class and is not defined within any namespace  If the class is in a namespace then  instead of new YourClass   you ve to do new YourNamespace YourClass

User · Answer

As a more systematic and structured solution you could define folders where your classes are stored and create an autoloader    autoload    which will search the class files in defined places   require once     settings php    define  DIR CLASSES     path to the classes folder        this can be inside your settings php   user   new User     user- gt createUser   POST  username      POST  email      POST  password      function   autoload  classname         if file exists DIR CLASSES    class     classname     php              include once DIR CLASSES    class     classname     php       looking for the class in the project s classes folder       else           include once  classname     php       looking for the class in include path

User · Answer

Maybe it is how you use new User    Set path something like   user   new  resources engine ajax User

User · Answer

It  happened to me  The problem is that somehow you include a file with the same file name of the class thus invalidating the same class   Check the path of inclusion and these checks files with the same name

User · Answer

you should declare namespace in the ClassUser php  something like this    lt  php namespace app     where  app  is a folder declared as a root for the project class ClassUser  public function test      log something here       gt    Then you can add the class in your other php files like this    lt  php use app ClassUser   classUserLcl   new ClassUser     classUserLcl- gt test      gt    and you are done  Otherwize it will abuse   You Oh  its a Fatal error    Uncaught Error  Class  app ClassUser  not found in

User · Answer

It may also be  that you by mistake commented out such a line like require once   DIR        vendor autoload php     --- your namespaces are not loaded   Or you forget to add a classmap to the composer  thus classes are not autoloaded and are not available  For example     autoload          psr-4                  src               classmap              dir YourClass php             require          php     gt  5 3 9        symfony symfony    2 8

User · Answer

Check to make sure your environment isn t being picky about your opening tags  My configuration requires    lt  php   If i try to use    lt     Then I get the same error as you

User · Answer

if     class exists  User         die  There is no hope

[php] PHP class not found but it's included

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