This translation is 755 in octal notation. Mint ~ # cat /var/For the system account running the web-server files read execute. Mint ~ # chmod -R 777 /var/www/html/phptest/ĭrwxrwxrwx 2 root www-data 4096 Nov 24 11:43 /var/www/html/phptest/ Mint ~ # touch /var/www/html/phptest/php_test.php make a simple script in your preferred scripting language. ![]() make sure your test file has read, write and execute permissions.create a test directory with read, write, and execute permissions.When troubleshooting 500 Status Codes as an Administrator, it is usually best to make configurations simple as possible to isolate any configuration issues. Let’s fix it and see:Įverything appears to be working fine now. It looks as though someone forgot to terminate a line ending on line 8. Let’s see what is happening on line 9 of our PHP script: mint ~ # cat -n /var/www/html/test.php PHP Parse error: syntax error, unexpected 'echo' (T_ECHO) in /var/www/html/test.php on line 9 AH00094: Command line: '/usr/sbin/apache2' Now that we have some fresh logs, let’s watch to see what happens as we call the page getting the 500 Error: mint / # tail -f /var/log/apache2/error.log AH00163: Apache/2.4.18 (Ubuntu) configured - resuming normal operations It’s always easiest to start with fresh logs: mint / # mv /var/log/apache2/error.log /var/log/apache2/error001.bak In this scenario a faulty PHP script is causing a 500 error:įirst, let’s check our HTTP Logs. With the -f switch tail will output lines to the terminal as they are logged Troubleshooting a Buggy PHP Script tail logs while reproducing the 500 error.If no configuration files are backed up – backing up the current configuration files then running default configurations could help isolate the issue. Try using configuration files backed-up prior to edits. If anything was recently modified look for ways to throw recent changes out of the equation. changes made to the HTTP server, PHP, or CMS configuration files.Since the last known-working-configuration, something has more than likely changed from when 500 Errors started appearing. There is a possibility a web-page was requested before the web-server has completed into a running state.Īlso, try other web-pages on the same site installation. If the server has just restarted, wait about 10 seconds then refresh the page. The first thing to try is simply refreshing the web-page and rebooting the server. Multiple catch blocksĪ try.catch statement can have multiple catch blocks.Sometimes Google doesn’t even know what caused the error In this example, we get the detailed error message by calling the getMessage() method of the $ex object. The exception variable $ex is an instance of the Exception class that contains the detailed information of the error. In this example, if any error occurs in the try.block, the execution jumps to the catch block. Here’s a typical syntax of the try.catch statement: getMessage() To handle the exceptions, you use the try.catch statement. Instead of halting the script, you can handle the exceptions gracefully. Exceptions can be attempting to read a file that doesn’t exist or connecting to the database server that is currently down. ![]() In programming, unexpected errors are called exceptions. ![]() Introduction to the PHP try…catch statement Summary: in this tutorial, you will learn how to use the PHP try.catch statement to handle exceptions.
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