how to create a logfile in php

Question

I want to create a logfile for my system to register log every action they do inside the system  But I have no idea how to do it   For example  I have this php code that does the login function   public function hasAccess  username  password        form   array         form  username      username       form  password      password         securityDAO    this- gt getDAO  SecurityDAO         result    securityDAO- gt hasAccess  form         var dump  form         var dump  result       if  result 0   success     1             this- gt Session- gt add  user id    result 0   id                this- gt Session- gt add  username    result 0   username                this- gt Session- gt add  roleid    result 0   roleid             return  this- gt status 0 true  auth success   result        else          return  this- gt status 0 false  auth failed   result             now I want to create a logfile entitled  the date today   then when that functions is used for loging in  it will write that user has logged in  the same with other functions  But I only want a single file for every day   Could anyone be kind enough to guide and teach me how I should do my codes

User · Answer

Please check this code  it works fine for me    data   array  shopid   gt 3  version   gt  1  value  gt 1       here  data is dummy varaible  error log print r  data true   3    SERVER  DOCUMENT ROOT     your-file-name log       In  data we can mention the error messege and create the log

User · Answer

Use below function      Enable error reporting ini set  display errors   1     Report runtime errors error reporting E ERROR   E WARNING   E PARSE     error reporting E ALL  amp   E NOTICE      Tell php where your custom php error log is ini set  error log    php error log      dateTime date  Y-m-d H i s     ip    SERVER  REMOTE ADDR     errorString  Error occured on time  dateTime by ip  ip    php error msg   errorString     Append the error message to the php-error log   error log  php error msg   error log  A custom error has been triggered  1  email address   From  email address      Above function will create a log in file php error with proper description and email will be sent

User · Answer

For printing log use this function  this will create log file in log folder  Create log folder if its not exists    logger  Your msg in log     Filename you want     Data to be log string or array or object      function logger  logMsg  logger    filename  logger    logData                        log    date  j n Y h i s         logMsg     print r  logData 1  PHP EOL                                  -------------------------  PHP EOL              file put contents    log    filename date  j n Y     log    log  FILE APPEND

User · Answer

Please check with this documentation   http   php net manual en function error-log php  Example    lt  php    Send notification through the server log if we can not    connect to the database  if   Ora Logon  username   password         error log  Oracle database not available    0         Notify administrator by email if we run out of FOO if     foo   allocate new foo           error log  Big trouble  we re all out of FOOs    1                  operator example com          another way to call error log    error log  You messed up    3    var tmp my-errors log      gt

User · Answer

Agree with the  jon answer  Just added modified the path to create the log directory inside the root   function wh log  log msg         log filename     SERVER  DOCUMENT ROOT     log       if   file exists  log filename                    create directory folder uploads          mkdir  log filename  0777  true              log file data    log filename   log     date  d-M-Y       log       file put contents  log file data   log msg     n   FILE APPEND       just added   SERVER  DOCUMENT ROOT

User · Answer

To write to a log file and make a new one each day  you could use date  j n Y   as part of the filename     Something to write to txt log  log     User      SERVER  REMOTE ADDR     -   date  F j  Y  g i a   PHP EOL           Attempt      result 0   success     1   Success   Failed   PHP EOL           User     username PHP EOL           -------------------------  PHP EOL    Save string to log  use FILE APPEND to append  file put contents    log   date  j n Y     log    log  FILE APPEND     So you would place that within your hasAccess   method   public function hasAccess  username  password        form   array         form  username      username       form  password      password        securityDAO    this- gt getDAO  SecurityDAO         result    securityDAO- gt hasAccess  form          Write action to txt log      log     User      SERVER  REMOTE ADDR     -   date  F j  Y  g i a   PHP EOL               Attempt      result 0   success     1   Success   Failed   PHP EOL               User     username PHP EOL               -------------------------  PHP EOL        -     file put contents    log   date  j n Y     txt    log  FILE APPEND        if  result 0   success     1             this- gt Session- gt add  user id    result 0   id                this- gt Session- gt add  username    result 0   username                this- gt Session- gt add  roleid    result 0   roleid             return  this- gt status 0 true  auth success   result        else          return  this- gt status 0 false  auth failed   result

User · Answer

You could use built-in function trigger error   to trigger user errors warnings notices and set error handler   to handle them  Inside your error handler you might want to use error log   or file put contents   to store all records on files  To have a single file for every day just use something like sprintf   s log   date  Y-m-d    as filename  And now you should know where to start

User · Answer

This is my working code   Thanks to Paulo for the links   You create a custom error handler and call the trigger error function with the correct  errno exception  even if it s not an error   Make sure you can write to the log file directory without administrator access      lt  php      logfile dir    C  workspace logs          or   var log   for Linux      logfile    logfile dir    php     date  y-m-d       log        logfile delete days   30       function error handler  errno   errstr   errfile   errline                global  logfile dir   logfile   logfile delete days           if    error reporting    amp   errno                    This error code is not included in error reporting  so let it fall                through to the standard PHP error handler             return false                      filename   basename  errfile            switch   errno                case E USER ERROR                  file put contents  logfile  date  y-m-d H i s    gettimeofday    usec        filename   errline        ERROR  gt  gt  message     errno   errstr n   FILE APPEND   LOCK EX                   exit 1                   break               case E USER WARNING                  file put contents  logfile  date  y-m-d H i s    gettimeofday    usec        filename   errline        WARNING  gt  gt  message    errstr n   FILE APPEND   LOCK EX                   break               case E USER NOTICE                  file put contents  logfile  date  y-m-d H i s    gettimeofday    usec        filename   errline        NOTICE  gt  gt  message    errstr n   FILE APPEND   LOCK EX                   break               default                  file put contents  logfile  date  y-m-d H i s    gettimeofday    usec        filename   errline        UNKNOWN  gt  gt  message    errstr n   FILE APPEND   LOCK EX                   break                        delete any files older than 30 days          files   glob  logfile dir                  now     time             foreach   files as  file              if  is file  file                   if   now - filemtime  file   gt   60   60   24    logfile delete days                      unlink  file            return true        Don t execute PHP internal error handler            set error handler  error handler         trigger error  testing 1 2 3   E USER NOTICE     gt

User · Answer

create a logfile in php  to do it you need to pass data on function and it will create log file for you   function wh log  log msg         log filename    log       if   file exists  log filename                     create directory folder uploads          mkdir  log filename  0777  true              log file data    log filename   log     date  d-M-Y       log          if you don t add  FILE APPEND   the file will be erased each time you add a log     file put contents  log file data   log msg     n   FILE APPEND         call to function wh log  this is my log message

[php] how to create a logfile in php?

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