![]() Most likely /var/log/nginx/error.log file) You can find more details here about debugging with Nginx. Most likely: /var/file If you haven’t specified any error_log path for your site, then PHP errors will go to Nginx’s default error_log. Errors in your PHP scripts for a site will go into error_log specified for that site in its nginx config. You will not see a file /var/log/php5/error.log or not any error being logged in that file. Please note that turning on display_errors can break ajax-based applications. Open… vim /etc/php5/fpm/pool.d/php_admin_flag = on When running PHP using FPM, we can override any php.ini setting from FPM. Its up to you to debug them or ignore them based on your context. Image resizing function, network I/O related functions are some examples which will frequently show-up in PHP slow_log. This will help us find scripts which execute slowly. You can replace 10s with any other value. Open… vim /etc/php5/fpm/pool.d/request_slowlog_timeout = 10s Also, we will see how PHP’s error_log gets diverted if it is running behind FPM and Nginx. #PHP SCRIPT DEBUGGER HOW TO#Let’s see how to use these logs to debug PHP scripts. Slow scripts are not the ones which break your site but they slow-down everything. Using FPM, we can have a slow_log for all such scripts. We hope you found this article helpful.If you are an old PHP programmer, you must have used PHP’s error_log function sometime. But PHP itself does not provide a way to find out slowly executing scripts. We did that to see what the service was returning when a unexpected error occurred. Optionally, you can append the response body to the $debug variable. * Connection #0 to host requestb.in left intact * Server gunicorn/19.3.0 is not blacklisted * upload completely sent off: 9 out of 9 bytes * Connected to requestb.in (23.21.53.220) port 80 (#0)Ĭontent-Type: application/x-www-form-urlencoded Now the $debug variable will hold a string containing data like this: * Hostname was NOT found in DNS cache To correctly capture all the information from cURL you must do it in this order - first close the stream and then get the contents. $curl = curl_init() Ĭurl_setopt($curl, CURLOPT_VERBOSE, true) Ĭurl_setopt($curl, CURLOPT_STDERR, $out) Īfter the curl_exec() call you can close the stream and fetch the information from the output buffer. Then we needed to turn on verbose output information and define the output stream. We must do this before starting the cURL handler. This allows us to write verbose information from cURL to the output buffer. We start by turning on the PHP output buffer (OB) and strting the output stream. This required a few additions and updates to our code. To get detailed information we needed to save detailed information to a log file. Unfortunately, in this particular situation, the exception output did not reveal very much about what was happening with our cURL requests. In production environments we capture and log all exceptions using an app called Sentry. Just recently, we ran into a situation where one of our cURL integrations was failing. #PHP SCRIPT DEBUGGER CODE#How can we determine where the code is failing? Use Logs, Not Exceptions Some requests respond as expected, while others do not. Let's say you have an integration with a third-party API and the service becomes unstable. However, sometimes debugging requests made with cURL, specifically from a PHP application, can be tricky. Quite often we'll use it to interact and fetch data from third-party API's. ![]()
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