Detailed introduction to PHP error log in CLI environment

This article brings you a detailed introduction to the error log of PHP in the CLI environment. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

1. display_errors = Off; //Control whether php outputs errors; output in a production environment will reveal sensitive information; it is recommended to log errors instead of sending them to STDOUT
off: do not display any errors; stderr: Display errors to STDERR (only affects CGI/CLI); On/stdout: Display errors to STDOUT (that is, print errors directly on the screen)
2. log_errors = On; // Record errors to the log specified by the server; STDERR; or the location specified by the error_log directive

3, error_log = /var/log/php_errors.log;//The location specified by the error log

For example, php code:

Print the error directly on the screen. If display_errors is not turned on, it will not be displayed.

The error log specified by error_log will also be displayed

## 4. error_log($message,$message_type,$destination,$extra_headers) function,

message_type defaults to 0, which is sent to the default system log, error_log configuration The specified place; if it is 3, it will be sent to the file specified by the third parameter

error_log("I was an error!");

There will be a record in the error log

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