php 如何在php中创建日志文件？
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how to create a logfile in php?
提问by maecy m
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.
我想为我的系统创建一个日志文件来注册/记录他们在系统内执行的每个操作。但我不知道该怎么做。
For example, I have this php code that does the login function.
例如，我有这个执行登录功能的 php 代码。
public function hasAccess($username,$password){
$form = array();
$form['username'] = $username;
$form['password'] = $password;
$securityDAO = $this->getDAO('SecurityDAO');
$result = $securityDAO->hasAccess($form);
//var_dump($form);
//var_dump($result);
if($result[0]['success']=='1'){
$this->Session->add('user_id', $result[0]['id']);
//$this->Session->add('username', $result[0]['username']);
//$this->Session->add('roleid', $result[0]['roleid']);
return $this->status(0,true,'auth.success',$result);
}else{
return $this->status(0,false,'auth.failed',$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.
现在我想创建一个名为“今天的日期”的日志文件，然后当该功能用于登录时，它将写入该用户已登录，与其他功能相同。但我每天只想要一个文件。
Could anyone be kind enough to guide and teach me how I should do my codes?
任何人都可以指导和教我如何编写代码吗？
回答by Lawrence Cherone
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.
要写入日志文件并每天创建一个新文件，您可以将其date("j.n.Y")用作文件名的一部分。
//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', $log, FILE_APPEND);
So you would place that within your hasAccess()method.
所以你会把它放在你的hasAccess()方法中。
public function hasAccess($username,$password){
$form = array();
$form['username'] = $username;
$form['password'] = $password;
$securityDAO = $this->getDAO('SecurityDAO');
$result = $securityDAO->hasAccess($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->Session->add('user_id', $result[0]['id']);
//$this->Session->add('username', $result[0]['username']);
//$this->Session->add('roleid', $result[0]['roleid']);
return $this->status(0,true,'auth.success',$result);
}else{
return $this->status(0,false,'auth.failed',$result);
}
}
回答by JON
create a logfile in php, to do it you need to pass data on function and it will create log file for you.
在 php 中创建一个日志文件，为此您需要传递有关函数的数据，它会为您创建日志文件。
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, $log_msg . "\n", FILE_APPEND);
}
// call to function
wh_log("this is my log message");
回答by Surabhil Sergy
Please check with this documentation.
请检查此文档。
http://php.net/manual/en/function.error-log.php
http://php.net/manual/en/function.error-log.php
Example:
例子：
<?php
// Send notification through the server log if we can not
// connect to the database.
if (!Ora_Logon($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,
"[email protected]");
}
// another way to call error_log():
error_log("You messed up!", 3, "/var/tmp/my-errors.log");
?>
回答by Paulo Freitas
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... :)
您可以使用内置函数trigger_error()来触发用户错误/警告/通知并set_error_handler()处理它们。在您的错误处理程序中，您可能想要使用error_log()或file_put_contents()将所有记录存储在文件中。要每天使用一个文件，只需使用诸如sprintf('%s.log', date('Y-m-d'))文件名之类的内容。现在你应该知道从哪里开始...... :)
回答by Pasupathi Thangavel
Please check this code, it works fine for me.
请检查此代码，它对我来说很好用。
$data = array('shopid'=>3,'version'=> 1,'value=>1'); //here $data is dummy varaible
error_log(print_r($data,true), 3, $_SERVER['DOCUMENT_ROOT']."/your-file-name.log");
//In $data we can mention the error messege and create the log
回答by Manish
Agree with the @jon answer. Just added modified the path to create the logdirectory inside the root
同意@jon 的回答。刚刚添加修改了路径，在log里面创建目录root
function wh_log($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']
刚刚添加 $_SERVER['DOCUMENT_ROOT']
回答by Ashwani Panwar
For printing log use this function, this will create log file in logfolder. Create log folder if its not exists .
打印日志使用此功能，这将在log文件夹中创建日志文件。如果日志文件夹不存在，则创建它。
logger("Your msg in log ", "Filename you want ", "Data to be log string or array or object");
function logger($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);
}
回答by xinthose
This is my working code. Thanks to Paulofor the links. You create a custom error handler and call the trigger_errorfunction with the correct $errnoexception, even if it's not an error. Make sure you can write to the log file directory without administrator access.
这是我的工作代码。感谢Paulo提供的链接。您创建一个自定义错误处理程序并trigger_error使用正确的$errno异常调用该函数，即使它不是错误。确保您可以在没有管理员访问权限的情况下写入日志文件目录。
<?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() & $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 >> 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 >> 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 >> 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 >> 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) >= 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);
?>
回答by vritika
Use below function
使用以下功能
// Enable error reporting
ini_set('display_errors', 1);
//Report runtime errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);
//error_reporting(E_ALL & ~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.
以上函数将创建一个带有正确描述的登录文件 php_error 并发送电子邮件。
