How to log errors and warnings into a file in php?
Last Updated :
02 Jan, 2019
In PHP, errors and warnings can be logged into a file by using a php script and changing configuration of php.ini file. Two such approaches are mentioned below:
Approach 1: The error_log() function can be used to send error messages to a given file. First argument to the function is the error message to be sent. Second argument tells where to send/log the error message. In this case, second argument is set to 3, used to redirect error message to a file. Third argument is used to specify the file path of the error logging file.
Below is the implementation of the above approach:
<?php
$error_message = "This is an error message!" ;
$log_file = "./my-errors.log" ;
error_log ( $error_message , 3, $log_file );
?>
|
Output:
[20-Dec-2018 17:32:00 UTC] This is an error message!
Approach 2:
- The init_set() function allows a user to programmatically update configuration of the php.ini file.
- The ini_set(“log_errors”, TRUE) command can be added to the php script to enable error logging in php.
- The ini_set(‘error_log’, $log_file) command can be added to the php script to set the error logging file.
- Further error_log($error_message) function call can be used to log error message to the given file.
Below is the implementation of the above approach:
<?php
$error_message = "This is an error message!" ;
$log_file = "./my-errors.log" ;
ini_set ( "log_errors" , TRUE);
ini_set ( 'error_log' , $log_file );
error_log ( $error_message );
?>
|
Output:
[20-Dec-2018 17:30:35 UTC] This is an error message!
Similar Approach: Following lines can also be added directly to php.ini to make the configuration changes permanent for every php script that logs errors and warnings.
log_errors = on
error_log = ./errors.log
Note:: This approach is not highly reliable as compared to other approaches. Its better to use approach 1 as it gives flexibility of choosing different files for logging at same time without changing configuration of php.ini file.
Like Article
Suggest improvement
Share your thoughts in the comments
Please Login to comment...